Instruction/ maintenance manual of the product 69NT40-511-199 Carrier
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Models 69NT40 - 51 1 - 1 to 69NT40 - 51 1 - 199 and 69NT40 - 521 T -268 Rev G Containe r Refrigeratio n Unit DUE TO THE LARGE NUMBE R OF SCHE MA TI C DIAGRAM S CONT AINE D IN THI S BOOK, THE BOO K IS PRESENTED A S TWO FILES.
Carr ier Transic old Divis ion, Carr ier Corporat ion, P .O . Box 4805, S yrac use, N .Y . 13221 OPERA TION AND SE R VI CE MANUAL E Carr ier Corpor ation 1999 S Printed in U.
SA FETY S UMMA R Y Safety- 1 T -268-07 SAFE TY SUM MAR Y GENE RAL SAF ETY NO TICE S The following ge nera l safe ty notices supplement the specific war nings and c autions appear ing elsew here in this manual. They are recommended precautions that m ust be understood and applied during operation and maintenance of the e quipment cover ed he rein.
Safety- 2 T -268-07 SPECIF IC W ARNING AND CAUT ION ST A TEMENT S T o help i dent ify t he label hazard s on th e Unit an d explai n the l evel of awareness each one carries , an exp lanat ion i s given with the appropr iate conse quenc es: DANGER - - means an immedia te h azard whi ch WILL resul t in sev ere personal i nju ry or death .
T ABLE OF CONT ENTS i T -268-07 T ABLE OF CONT ENTS Sectio n Page SAFE TY SUMMAR Y Sa fety -1 ...................................................... GENERAL SAF ETY NOT ICES Safety-1 .............................................. FIRST A ID Safety-1 .
ii T -268-07 T ABLE OF CONT ENTS (CONTINUED) Sectio n Page 3.3.1 Bri ef Desc ri ption 3-24 ............................................ 3.3.2 DataC ORDER C onfigur ation 3-25 ................................. 3.3.3 DataC ORD ER Functi on Codes 3-26 ..
T ABLE OF CONT ENTS iii T -268-07 T ABLE OF CONT ENTS (CONTINUED) Sectio n Page SER VICE 6- 1 ................................................................ 6.1 MAN IFOLD GAUGE SET 6-1 ............................................ 6. 2 SUCTIO N AND DIS CHARGE SE R VICE V A L VE S 6-4 .
iv T -268-07 T ABLE OF CONT ENTS (CONTINUED) Sectio n Page 6.26 THER MOST A TIC EXP AN SION V AL VE 6-26 ................................ 6. 27 CONTROL LE R/DA T ACO RDER 6 -28 ...................................... 6.27.1 Contr oll er/D ataCOR DER Pr ogram mi ng Procedur e 6-29 .
T ABLE OF CONT ENTS v T -268-07 LIST OF IL LUSTRA TIONS (CONTINUED) Figure Page Fi gure 6- 1 Mani fold Gauge Set 6-1 ............................................ Fi gure 6- 2 R-134a Mani fold Gauge Set Connection 6-3 .......................... Fi gure 6- 3 Suction or D is char ge Serv ice V alve 6-4 .
vi T -268-07 LI ST OF T ABLES Ta b l e Pag e T able 1-1 Model C hart 1-2 ................................................... T able 2-1 Safety and Protecti ve Devi ces 2-19 ................................... T able 3-1 Control ler Configur ation V ariabl es 3-3 .
SECTI ON 1 1- 1 T -268-07 SECTI ON 1 INTRODUCTION 1.1 I NTRO DUCTIO N WARNING It h as b een d etermin ed that p ressu rized , air-ri ch mix tures o f refrig erants a nd air can under go co mbust ion w he n ex pose d to an ign iti on so urce.
1- 2 T- 268-07 Table 1 - 1 . Model C har t MODE L PID A Cold m ent sformer S peed p ressor r -Cooled e nser Condenser Coil & Discharge Opt ion t y Sensor n sFresh cations M odule (CI) e mperat ure.
SECTI ON 1 1- 3 T -268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humi.
1- 4 T- 268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humidity S enso.
SECTI ON 1 1- 5 T -268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humi.
1- 6 T- 268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humidity S enso.
SECTI ON 1 1- 7 T -268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humi.
1- 8 T- 268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humidity S enso.
SECTI ON 1 1- 9 T -268-07 MODE L Elect rical Wiring Schem atics and Diagrams Saginomiy a T emperat ure Recorder Part low T emperat ure Recorder Communic ations Int erface M odule (CI) Trans Fresh Humi.
SECTI ON 2 2- 1 T -268-07 SECTI ON 2 DESCRIPTION 2.1 GENERAL DES CRIPT IO N a. Ref rigerat io n Un it - - F ront Sectio n The fron t sect ion o f th e refrigerat ion uni t sh ows access to most par ts of the unit (i.e., compressor , condenser , receiver, etc.
2- 2 T- 268-07 b. Ev apor at or Sec tion The evaporator section contains the optiona l mechan ical t emperat ure recordi ng bul b, ret urn recorder sens or (RR S), retu rn temp erature sensor (R TS ),.
SECTI ON 2 2- 3 T -268-07 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1. Ev aporator F an Motor #1 ( EM1) 2. Humidit y Sensor ( HS) - - O ptional 3. Ret urn Recorder Sensor ( RRS) 4. Ret urn Tem perature S ensor (RT S) 5. Mec hanical Recording T hermomet er Bulb 6.
2- 4 T- 268-07 c. Co mpresso r Secti on The compre ssor section include s the compressor, power cab le stora ge compa rtment, and an optional transf ormer (refer to Tabl e 1-1 an d Fig ure 2-9 ), whi ch is lo cated to the l eft of t he comp ressor. This sec tion also conta ins the optional dischar ge/suc tion pressure tr ansduc ers.
SECTI ON 2 2- 5 T -268-07 d. Conde nse r Sect ion The conde nsing se ction consists of a c ondense r fan motor, a conde nser f an and a n air- cooled c ondenser coil. Whe n the unit is operating, air is pulled in t he bottom of the coil and discharge d horizontally out through the front of the condense r fan grille .
2- 6 T- 268-07 e. Recei ver Secti on The recei ver secti on cons is ts of qu ench exp ansi on valve , manual liquid line valve, f ilter- drie r, r eceiv er with sight glass/moisture -liquid indica tor.
SECTI ON 2 2- 7 T -268-07 f. Wate r- Coole d Conde nse r S ec tion (Opt ional) The w ater- coole d condense r se ction consists of water -coole d condense r, sight glass, moisture- liquid indicator , .
2- 8 T- 268-07 g. Con trol Box w ith a S ing le -Speed Co mpresso r The control box includes the manual switches, circuit breaker(s ), cont actors, t ransfo rmer, fus es, key p ad, display module, cur.
SECTI ON 2 2- 9 T -268-07 h. Con trol Bo x wi th a T wo -Speed Co mpresso r (Optiona l) The control box includes the manual switches, circuit breaker(s ), cont actors, t ransfo rmer, fus es, key p ad, display module, curr ent se nsor module, Controller /DataCORDER module (Se e Figure 2-8) , and a n optional remote monitoring unit (CI) .
2- 10 T- 268-07 2.2 REFRIGERATIO N SYSTEM DATA Number of Cylinder s 6 Model 06DR CFM 41 W e i g h t ( D r y ) 1 18 kg (260 lb) - Single- Speed i . C o m p r e s s o r / M o t o r A s s e m b l y W e i g h t ( D ry ) 129.39 kg ( 285.25 lb) - Two-Speed i .
SECTI ON 2 2- 11 T- 268-07 2.3 ELECT RICAL DAT A CB-1 Trips at 29 amps a. Circu it Breaker CB-2 (50 amp) Tr i p s a t 62.5 am ps a . C i r c u i t B r e a k e r CB-2 (70 amp) Tr i p s a t 87.
2- 12 T- 268-07 Orange wir e Power Red wire Outpu t Brown wire Gr ound Input volt age 5v d c i. Hum idit y Se nsor Output v oltage 0t o3 . 3v d c i . H u m i d i t y S e n s o r (HS) - - Opti onal Ou tpu t vol tag e readin gs verses rel ative h umi di ty (RH) p ercentag e: ( ) p 30% 0.
SECTI ON 2 2- 13 T- 268-07 2.5 UPPER FRESH AIR MAKEUP VENT The purpose of the fre sh air makeup vent is t o provide ventila tion for c ommodities that re quire fre sh air circ ulation. The vent must be close d whe n transpor ting froz en foods or contr olled a tmosphere load s.
2- 14 T- 268-07 2.7 REFRIG ERAT ION CI RCUIT W IT H RECEIV ER Starting a t the compressor , the suction gas is comp ressed t o a higher t emperat ure and press ure. Whe n opera ting with the air-coole d condense r, the gas flows through the discharge se rvic e valve into the pressur e regula tor valve that is normally open.
SECTI ON 2 2- 15 T- 268-07 19 18 17 1 2 3 4 5 6 7 8 9 11 12 14 15 16 10 1 3 1. Suction Service Val ve 2. Disc harge Serv ice Valve 3. Disc harge Pres sure Regulator V alve 4. Air -Cooled Condenser 5. Evapor ator 6. T hermost atic E xpansion Valve 7. Ex ternal Equaliz er Line 8.
2- 16 T- 268-07 2.8 REFRIG ERAT ION CI RCUIT W IT H THE WAT ER - COO LED CO NDENSER ( Opt io nal) Starting a t the compressor , the suction gas is comp ressed t o a higher t emperat ure and press ure.
SECTI ON 2 2- 17 T- 268-07 1 2 3 4 5 6 7 8 9 11 12 14 15 16 17 18 19 10 13 1. Suction Service Val ve 2. Disc harge Serv ice Valve 3. Disc harge Pres sure Regulator V alve 4. Air -Cooled Condenser 5. Evapor ator 6. T hermost atic E xpansion Valve 7. Ex ternal Equaliz er Line 8.
2- 18 T- 268-07 2.1 0 SU CTION SOLE NOID VA LVE The suction solenoid valve , shown in F igure 2-5, is contro lled by the Contr oller r elay ( TS). a. Op eratio n If se t point is below - - 10 _ C( + 1.
SECTI ON 2 2- 19 T- 268-07 2.12 SAFETY AND PROTECTIVE DEVICES Unit components a re pr otecte d from dama ge by safety and pr otec tive de vic es listed in Table 2-1 .T h e s e device s monitor the unit ope rating c onditions and open a set of electr ical contac ts when an unsafe c ondition occurs .
SECTI ON 3 3- 1 T -268-07 SECTI ON 3 MICRO PROCESSOR 3.1 MICRO- LINK 2 i CONTR OLLER MOD ULE 12 2 6 7 8 34 2 2 2 5 1. Micr o-Link 2i Cont roller/Dat aCORDER M odule 2. Connector s 3. T est Points 4. Fuses 5. Cont rol Circuit P ower Connect ion (Locat ion: In back of connect or) 6.
3- 2 T- 268-07 f. Provide repr ogramma bility and configur ation through a memor y card. The memory ca rd automa tically downloa ds new softwa re to the Controller when inse rted, and c ontrols output to the display for sta tus information. g. Provide electr onic data storage .
SECTI ON 3 3- 3 T -268-07 Table 3- 1. Controlle r Conf igura tion Var iable s CONF IG URA TIO N NUMBER TITLE DEFAUL T OPTION 1 Bypas s V alve Enable In Out 2 Evapor ator F an Speed dS (Dual) SS (Singl.
3- 4 T- 268-07 3.1. 3 G eneral L ayou t of th e Cont rol ler Secti on The Micr o-Link 2i Controller /Data CORD ER consists of a key pad, display module and Controller module. Connector s are used to attac h the wir ing of the unit to the Controller module .
SECTI ON 3 3- 5 T -268-07 The display module (see F igure 3-2) is mounted at a 20 degre e downwar d tilt to aid in visibility. The display module consists of: a. Two 25mm (1 inch) high, five digit LCD displays which are easil y viewed in d irect sun lig ht and back lighted for supe rior low-light visibility.
3- 6 T- 268-07 3.1 .4 Contr oller Func tion Code s Ther e are thir ty-nine func tions which the opera tor may access to exami ne the op eratin g statu s of the u nit .
SECTI ON 3 3- 7 T -268-07 CODE # DESCRI PTI ON TITLE Inapplic able Func tions D ispla y - - - - - - - - - - Cd13 Condenser Pr essure (CPC) Condenser pr essure is dis played using a pres sure tr ansducer . P ressure is displayed in unit s of ps ig when code 28 is set t o _ F and units of bars when funct ion code Cd28 is s et to _ C.
3- 8 T- 268-07 CODE # DESCRI PTI ON TITLE Inapplic able Func tions D ispla y - - - - - - - - - - Displa y Only Funct ions NOTE Function codes Cd27 through Cd37 are user-se lecta ble func tions. The ope rator can cha nge the value of these func tions to meet the operationa l needs of the containe r.
SECTI ON 3 3- 9 T -268-07 CODE # DESCRI PTI ON TITLE Inapplic able Func tions D ispla y - - - - - - - - - - Cd32 Current Lim it (Am peres) The cur rent lim it is t he maximum c urrent dem and allowed on any phase at any tim e.
3- 10 T- 268-07 CODE # DESCRI PTI ON TITLE Inapplic able Func tions D ispla y - - - - - - - - - - Cd39 Secondar y Return Air T em perature (Opt ional) This c ode is only applicable t o units wit hout a Dat aCORDER, that are c onfigured to have four probes.
SECTI ON 3 3- 11 T- 268-07 Table 3- 4. Controlle r Ala rm Indic ations CODE # TITLE DESCRI PTI ON MODE L 69NT40 -51 1-72 AL1 1 E vaporat or Fan Moto r 1 Safe ty Alarm 1 1 is t riggered by t he opening of t he internal pr otect or for ev aporator f an mot or #1.
3- 12 T- 268-07 CODE # DESCRI PTI ON TITLE AL53 NiCad Bat tery Pac k Failure Alarm 53 is caus ed by t he nicad batt ery pack being t oo low of a c harge for batt ery-bac ked recor ding.
SECTI ON 3 3- 13 T- 268-07 CODE # DESCRI PTI ON TITLE AL63 Curr ent Over Lim it Alarm 63 is triggered by t he current limit ing system. I f the compressor is O N and curr ent limit ing procedures c annot maint ain a current level below the us er select ed limit, t he current lim it alarm is act ivated.
3- 14 T- 268-07 3.1 .6 Conde nse r Pr essure Co ntro l ( CPC) A press ure contro l sys tem has b een inco rporated b y means of a condenser pre ssure transduce r (CPT) and condense r pressur e control (CPC) logic to maintain dischar ge pre ssures above 130 psig in low tem peratu res.
SECTI ON 3 3- 15 T- 268-07 modulation va lve (SMV) and suc tion solenoid valve (SSV) with the compr essor ene rgiz ed. Whe n pulling down from a control te mpera ture that is more than 5 _ C( 9 _ F) above set point, both valves will be open to reduce the pulldown time unle ss suction solenoid over ride or cur rent limiting is ac tivate d.
3- 16 T- 268-07 out-of-range or compresso r shutdown c ond ition, the hea t rela y is de-e ner gize d immediate ly. The out -of-range timer is provided to a llow the hea ters to rem ain energi zed d urin g a tem porary ou t-of-rang e condition.
SECTI ON 3 3- 17 T- 268-07 3.1. 7.2 F rozen Range Bel ow - - 10 _ C( + 1 4 _ F), or -- 5 _ C( + 2 3 _ F) Optionally For set points below -- 1 0 _ C( + 1 4 _ F), or - - 5 _ C( + 2 3 _ F) optionally, the Controller maintains RETURN air at the set point te mpera ture using the following mode s of opera tion: a.
3- 18 T- 268-07 the VENT mode is selec ted on the CA Controller . The user must sc roll through the selection by pressing the UP AR ROW or DOWN AR ROW keys, t hen press ing the ENTER key whe n the selection is made. While the tests are be ing execu ted, the user can terminate the pre- trip mode by holding the P RE-TRI P key.
SECTI ON 3 3- 19 T- 268-07 c. Auto T est Operat io n From Seri al Com munic at ions Pre -trip ma y also be initiated via communic ations. The opera tion is t he same a s for the Auto Test mode descr ibed a bove e xcept tha t should a te st fail, the pre -trip mode will au tomatic ally ter minate .
3- 20 T- 268-07 CODE # DESCRIPTION TITLE P4-1 High Speed Evapor ator Fan Motors Off Se tup: The high speed E vaporat or Fan is t urned off, a c urrent dr aw test is done aft er 10 seconds . Pass/F ail Criteri a: Passes if c hange in current draw is wit hin the range specif ied.
SECTI ON 3 3- 21 T- 268-07 CODE # DESCRIPTION TITLE Se tup: The co mpressor is started . If it is the first comp ressor start, the compr essor reliabilit y enhancement logic (CRE L) is execut ed, runn.
3- 22 T- 268-07 CODE # DESCRIPTION TITLE NOTE Starting with te st P7-0 through test P10, these te sts are only included w ith the “Auto2” (Optional) se lec tion menu. (Ref er to se ction 3.2.1.) Se tup: When t he unit is r unning, the c ondenser f an is de-energized, and a 15 minut e timer is s tart ed.
SECTI ON 3 3- 23 T- 268-07 CODE # DESCRIPTION TITLE P8-1 Perishable M ode Pull Down T est Re quire me nts : Control tem peratur e mus t be at least 60 _ F. Se tup: The set point is c hanged to 32 _ F , and a 180 m inute t imer is st art ed. The left dis play will read “P 8-1,” t he right display will s how the supply air t emperat ure.
3- 24 T- 268-07 CODE # DESCRIPTION TITLE P10-1 F rozen Mode ( Pull Down) T est S etup: When the cont ainer tem peratur e is greater t han or equal t o the 45 _ F . set point which w as set in t he froz en mode heat t est, the lef t display will r ead “P101” and the right display will show t he ret urn air tem peratur e.
SECTI ON 3 3- 25 T- 268-07 S Rea l Time Clock (RT C) Modific ation S Pre-T rip resul t & data S Trip S tart S ISO Tri p Header (Mus t be entered fi rst vi a Inter rogation p rogra m) S Economy Mod.
3- 26 T- 268-07 3.3 .3 Da taC ORDER Func tion Code s There are 35 functi ons wh ich t he operat or may acces s to exami ne t he operat ing s tat us of t he un it.
SECTI ON 3 3- 27 T- 268-07 3.3. 4 Dat aCORDER Al arms To Display A lar m Codes: While in Set Point Selection or De fa ult Display mode, press the ALT. MODE & ALARM LIST keys. This accesses t he Alarm Lis t Dis play Mo de, whi ch di spl ays any a larms store d in the Alarm Que ue.
3- 28 T- 268-07 Table 3- 7. Data COR DE R Ala rm Indic at ions T o Access: Press AL T . MODE key CODE # TITLE DESCRI PTI ON AL70 Recorder S upply T emper ature O ut of Range The r ecorder supply air t.
SECTI ON 3 3- 29 T- 268-07 The Dat aCORDE R alarm s for t he USDA and cargo probes a re c onfigura ble using the interr ogation progr am or via a configur ation car d. There are four configur ation var iable s for the DataCORDE R, which a re listed in Tabl e 3-8 with t heir des cript ion s and sel ectio n valu es.
3- 30 T- 268-07 e. Display vs. Configura tion Codes The Da taCORDER contains two types of display code s; Display and Configura tion. Display code s will display para mete r value s, but will not let them be modified. Configuration code s can be modified via the interr ogator o r with the insertion of the c ommon configur ation softwar e car d.
SECTI ON 3 3- 31 T- 268-07 Left Display : “dALnn” wher e nn = t he alarm hist ory entry 01- 08 Right Display: “xA nn” wher e x = “I” (inac tive) or “ A” (active) Or: “- - - - - - - - - - ” if no alar ms are cur rently in the alarm his tory list h.
3- 32 T- 268-07 St art, P ower Outages , and Temperat ure Out -of-Ran ge conditions. 3.3. 10 DataCO RDER Scro llb ack The DataCORDER will display probe values for the six DataCORDER probes up to 99 hours ba ck from the curr ent hour. The probe value s may be displayed by depre ssing the ALT.
SECTI ON 3 3- 33 T- 268-07 Tab le 3 -10. DataCORDE R Pre-T rip Dat a TEST # TITLE DA T A NOTE “Auto” or “ Auto1” menu includes the following: P, P1, P2, P3, P4, P5, P6 and rSLts. “Auto2’ (Optional) menu inc ludes the following: P, P1, P 2, P3, P4, P5, P6,P7, P 8, P9, P 10 and r SLts.
3- 34 T- 268-07 CONT AINE R ABCDXXXXXXX ON 08Jul 94 FROM 15Apr94 T O 17Apr94 (DEGREE S C) P AGE : 1 HEADER INF ORMA TION DataCorder SN: XXXXXXXX ALARMS R EPOR T ALARM NUM FIRS T ACTIVE LAST ACT IVE CO.
SECTI ON 3 3- 35 T- 268-07 AIR CIRCUL A TIO N ONL Y SET POINT F ALLING TEMPERA TURE RISI NG TEMPERA TURE -- 1 . 5 _ C( 2 . 7 _ F) -- 1 _ C( 1 . 8 _ F) -- 0 . 5 _ C( 0 . 9 _ F) - - 0.20 _ C +.20 _ C +1.5 _ C( 2 . 7 _ F) +1 _ C( 1 . 8 _ F) +0.5 _ C( 0 .
3- 36 T- 268-07 Comp ressor Star ting Sequenc e Is Ambient T emperature Less Than 60 ˚ F? High Speed Start Has Compresso r Run F or 20 Mi nutes ? Has Se t P oint Been Reached ? Is The Operating Capac.
SECTI ON 3 3- 37 T- 268-07 Compressor Starting Sequence Is Ambient T emperature Less Than 60 ˚ F? High Speed Start Has Se t P oint Been Reached ? STEP A B C D E YES YES YES Low S peed Soft Start (See.
SECTI ON 4 4- 1 T -268-07 SECTI ON 4 OPER A TION 4.1 PRE - TRIP INSPECTIO N (Be fore Starting) WARNING Bew ar e of unanno unce d sta rt ing of t he evaporator and condenser fans. a. If container is empty, chec k inside for the following: 1. Check ch annel s or “T” bars on fl oor for clean lin ess.
4- 2 T- 268-07 4.2 STARTI NG AND STO PPING I NSTRUCT IO NS CAUTIO N Mak e sure th at the u ni t ci rcuit b reaker(s ) (CB-1 & CB-2) a nd the s tart-stop swi tch (ST) are in the OFF position before con necti ng to an y electri cal p ower sou rce. a.
SECTI ON 4 4- 3 T -268-07 If A L55 is ac tive, mean ing that the Da taCORD ER ( DC) functiona lity is no longer active (D C c onfigura tion variab le off), t he Co ntro ller will act as a four p robe configur ed system during pr obe ch ecks.
4- 4 T- 268-07 When t he air t emperat ure decreas es to a predeterm ined tolera nce above se t point, relay TI energiz es and the in-ra nge light is illuminated. (Ref er to se ction 3.1.4, Code 30.) If the air te mpera ture c ontinues to fall, modulating cooling sta rts at appr oximate ly 2.
SECTI ON 4 4- 5 T -268-07 CONTROL TRANSFORMER = 18 V olt En ergize d Circuit = 24 V olt En ergized C ircuit = De -ener gized Cir cuit Fi gu re 4 -1. Cool ing i n Hig h Speed w it h Two -Sp eed Comp re.
4- 6 T- 268-07 b. Cooling in Low S pee d with Two-S pee d Comp ressor (S ee Fig ure 4 -2.) NOTE Evapora tor fa n motors will run in high speed. (Co ntact or EF en ergized ) NOTE A pressu re control s .
SECTI ON 4 4- 7 T -268-07 = 18 V olt Energized Circuit CONTROL TRANSFORMER = 24 V olt Energized Circui t = De - energized Ci rcuit Fi gu re 4 -2. Cool ing i n Lo w Speed w it h Two -Sp eed Comp ressor.
4- 8 T- 268-07 c. Co ol ing w it h Sin gle -Speed Co mpresso r (Se e Figure 4- 3.) NOTE Evapora tor fa n motors will run in high speed. (Co ntact or EF en ergized ) NOTE A pressu re control s yst em h.
SECTI ON 4 4- 9 T -268-07 = 18 V olt Energized Circuit CONTROL TRANSFORMER = 24 V olt Energized Circui t = De - energized Ci rcuit Fi gu re 4 -3. Cool ing w it h Sin gle -Speed Co mpresso r.
4- 10 T- 268-07 4.4. 5 Heat ing (See F igu re 4 - 4.) The unit will heat only when the controlle r set point is above - - 10 _ C( + 1 4 _ F), o r - -5 _ C( + 2 3 _ F) optionally, a s relay TH i s elect ronical ly l ocked ou t to pr event heati ng when the controller set point is below -- 1 0 _ C( + 1 4 _ F), or - - 5 _ C( + 2 3 _ F) optionally.
SECTI ON 4 4- 11 T- 268-07 CONTROL TRANSFORMER = 18 V olt En ergize d Circuit = 24 Volt Ener gized Cir cuit = De -ener gized Cir cuit Figure 4- 4. Hea ting Mode.
4- 12 T- 268-07 4.4. 6 Defrost Refe r to sec tion 3.1.4 (Code 27) for descr iption of the defr ost interva l selec tor and automatic def rost initiation. The defrost cyc le (see Figure 4-5) consists of two distinct sub-cyc les. The first sub-cycle is the de-ice cycl e, th e secon d is a p robe check cy cle.
SECTI ON 4 4- 13 T- 268-07 If Pr e-T rip is initiate d during the 30 minute time per iod, Pre- Trip w ill be allowed to run normally. Once Pre -Tr ip is over, the controlle r will r ever t to its nor mal contr ol mode logic. If ambie nt is war mer than - - 10.
4- 14 T- 268-07 Table 4 - 1. E lec tr ica l Cont rol Pos itions - - BELOW - - 10 _ C( + 1 4 _ F), o r - -5 _ C( + 2 3 _ F) optiona lly CONTROL CIRCUI T COOLING Holding Zone **De hu mid ifica tion HEA .
SECTI ON 4 4- 15 T- 268-07 Table 4 - 2. E lec tr ica l Cont rol Pos itions - - ABOV E - - 10 _ C( + 1 4 _ F), o r - -5 _ C( + 2 3 _ F) opt ionally CONTROL CIRCUI T COOLING Holding Zone * De hu midific.
SECTI ON 5 5- 1 T -268-07 SECTI ON 5 TROUBLESHOOTING CONDI TI ON POS SIBL E CAUSE REMEDY / REFE RENCE SECTION 5.1 UNIT WI LL NO T START O R ST ARTS THE N ST OPS No power t o unit Ext ernal power sour ce OF F Star t-S top swit ch OF F or def ect ive Circuit br eaker tr ipped or OFF Modular t ransfor mer not connec ted Tu r n o n Check Check 6.
5- 2 T- 268-07 CONDI TI ON PO SSIBL E CAUSE REMEDY / REFE RENCE SECTION 5.4 UNIT WI LL NO T HEAT OR HAS INSUF FICI ENT HEAT ING No power t o unit Star t-S top swit ch OF F or def ect ive Circuit br ea.
SECTI ON 5 5- 3 T -268-07 CONDI TI ON PO SSIBL E CAUSE REMEDY / REFE RENCE SECTION 5.7 ABNORMAL PRESSURES (COO LING ) High dischar ge pressure Condenser coil dir ty Condenser f an rotat ing backwar ds.
5- 4 T- 268-07 CONDI TI ON PO SSIBL E CAUSE REMEDY / REFE RENCE SECTION 5.11 THE RMOST ATI C EXPANSI ON V ALVE M ALFUNCT IO N Low su ction pressu re with hig h superheat Low ref rigerant c harge Ext e.
SECTI ON 6 6- 1 T -268-07 SECTI ON 6 SERVICE NOTE To avoid damage to the earth’ s ozone la yer, use a refrige rant rec overy system whenever removing ref rigera nt. Whe n working with re fr igera nts you must comply with all loca l governme nt environmen tal laws.
6- 2 T- 268-07 CAUTIO N To p reven t trap pi ng l iq uid refri geran t in th e serv ice valve after c harging, perfor m the follow ing steps while the com pre ssor is ON an d b efore di scon necti ng th e man ifold gauge set: S Back seat ap pli cable di scharg e or man ual liquid line valve.
SECTI ON 6 6- 3 T -268-07 7 7 8 1 2 3 4 5 6 T o Suction Service Po rt To D i s c h a r g e S e r v i c e o r Manua l Liquid Li ne Po rt s 2 2 2 3 3 4 Red Hose Y ellow Hos e Blue H ose Red Knob Blue Kn ob 8 1. Manif old Gauge Set 2. Hose F itting ( 0.500-16 A cme) 3.
6- 4 T- 268-07 6.2 SUCTI ON AND DI SCHARGE SERV ICE VALVES The suction and discharge ser vice valves used on the compre ssor a re e quipped with mating flanges for connec tion to flange s on the compre ssor. These valves are pr ovided with a double seat and a gauge conne ction which ena ble servic ing of the c ompressor a nd refrigeran t lin es.
SECTI ON 6 6- 5 T -268-07 d. Evacua te and dehydra te the unit. (Refer to se ction 6 .5. ) e. C harge u nit p er secti on 6 .6. 6.5 EVACUATI ON AND DEHYDRAT IO N 6.5. 1 Gen eral Moisture is the dea dly enemy of refr igera tion systems. The prese nce of moisture in a re frige ration system ca n have many undesir able e ffe cts.
6- 6 T- 268-07 b. For Un it s equi pped w ith r eceiver: partially bloc k the c ondenser coil inlet air , starting f rom the fr ont of the condense r coil. Incr ease the a rea bloc ked until the compre ssor discha rge pre ssure is raise d to approxima tely 12 kg/cm @ (175 psig).
SECTI ON 6 6- 7 T -268-07 1 2 5 6 12 11 10 8 9 44 3 4 7 1. Refr igerant Recover y Unit 2. Refr igerant Cylinder 3. E vacuation M anifold (R- 134a) 4 Hand Valve 5. Vacuum P ump 6. Elect ronic Vacuum G auge 7. Manual Liquid Line Valv e 8. Condenser Coil 9.
6- 8 T- 268-07 6.6. 2 Ad di ng Refri geran t to System (Fu ll Ch arge) a. E vacuate un it an d leave in deep vacuum . (Refer to se ct ion 6 .5.) b. Place cylinder of R -134a on scale a nd conne ct cha rging line f rom cylinde r to liquid line va lve. Purge c harging line at liquid line valve and t hen note weight of cylinder a nd refrige rant.
SECTI ON 6 6- 9 T -268-07 12 3 4 5 6 7 8 10 11 12 13 14 15 9 1. Disc harge Valve F lange 2. High Side P ressure Connec tion 3. Low Side P ressur e Connection 4. Suc tion Valve F lange (Ref er to not e #7) 5. Mot or End Cov er 6. Ser ial/Model No. P late 7.
6- 10 T- 268-07 Table 6- 4 and Table 6-5 f or compre ssor we ar limits and bolt torque values. a. Place the compre ssor in a position wher e it will be convenie nt to drain the oil. R emove the oil plug on the oil pump inlet passage ( see Figure 6-8 for location) to vent the c ra nkcase .
SECTI ON 6 6- 11 T- 268-07 2 1 3 4 5 Set screw must be removed. 1. O il Pump & B earing Head 2. T hrust W asher 3. O il Pickup T ube 4. O il Inlet P ort 5.
6- 12 T- 268-07 opening afte r the piston rings are c ompre ssed. A piston ring compre sser will fac ilitate remova l. Eac h piston pin is l ocke d in place by lock rings which are snapped into gr ooves in the piston wall. 1 2 3 4 5 6 7 8 9 10 1. Capscr ew 2.
SECTI ON 6 6- 13 T- 268-07 6.9 COMPRESSOR REASSEMBLY To clea n compre ssor parts, use a suitable solvent with prop er precauti ons. Coat al l mo ving p arts wi th th e proper c ompressor o il before a ssembly. Refer to Table 6-5 for applicable c ompre ssor torque values.
6- 14 T- 268-07 Fi gu re 6 -16. Compresso r O il Pu mp End Vi ew 5. Align the gasket and install the eight capsc rew s in the mounting fla nge. Refe r to Table 6-5 for applica ble torque va lues. 6. Install rotor with ke y. Screw on e qualiz er tube and lock sc rew a ssembly w ith lock washe r and bend over tabs of lock wa sher.
SECTI ON 6 6- 15 T- 268-07 suction servic e valve f lange ca vity or by removing the oil fill plug. (See Fi gure 6-5.) S ome compr essors ha ve the oil plug loca ted on the cra nkcase , at the right or left side of the oil pump. d. To Remo ve Oil F rom an 06DR Co mpressor: 1.
6- 16 T- 268-07 f. Open cylinde r valve . Slowly close bleed- off va lve to increa se pre ssure on switch. The switch should open at a static pre ssure up to 25 kg/cm @ (350 psig). If a light is used, light will go out. If an ohmmeter is used, the meter will indica te open cir cuits.
SECTI ON 6 6- 17 T- 268-07 by holding the spanne r wre nch stationary a nd turning the 5/8-18 nut c ounter- clockwise (se e Figure 6-18). 1 2 3 4 5 6 5 7 8 9 1. Stat or 2. F lat washer, 1/ 4 3. Bolt , 1/ 4-20 x 3/ 4 4. Lock nut, 5/ 8-18 5. F lat washer, 5/ 8 6.
6- 18 T- 268-07 WARNING Wit h power O FF dischar ge the capa cit or an d d iscon nect th e circu it wi ring . c. Ch eckin g th e capaci tor If the ca pac itor is suspected of malfunction, you ma y choose to si mply repl ace it . Direct replacem ent requires a capa citor of the same value .
SECTI ON 6 6- 19 T- 268-07 (mounted to instrume nt case) . A single probe is attache d to the eleme nt (bulb) capilla ry whic h senses the containe r return a ir temper ature . If using two pr obes, one probe will be attac hed to the supply air temper ature sensor.
6- 20 T- 268-07 rais es sty lus in dicat ed tem peratur e reading ; shortening shaf t (clockwise ) lowers stylus readin g. Th en retig hten s et screw. (b) Res et cont rol at 0 _ C( 3 2 _ F), star t the refrigerat ion u nit an d repeat accuracy check.
SECTI ON 6 6- 21 T- 268-07 4. If adjustment is required, loosen setscre w (cross -recessed head ). Usin g a 7 mm wren ch, rot ate the adjustment screw c lockwise to set the stylus 1 to 2 _ C( 1 . 8t o3 . 6 _ F ) hig her th an d esired temp erature. 5.
6- 22 T- 268-07 comple tely immerse bulb) with ice cubes or chippe d ice, then filling voids betwee n ice with water and agi tat ing un til mix ture reaches 0 _ C (32 _ F) measured on a l abor atory ther mometer. b. Start unit and ch eck a ir temper ature /data r eadout on the control pane l.
SECTI ON 6 6- 23 T- 268-07 Sensor 41 mm (1 -5/ 8 inc hes) 6.35 mm (1/4 inc h) Figure 6- 22. Sens or (R RS , RTS, SRS or STS) f. Strip ba ck insulation o n all wiring 6.
6- 24 T- 268-07 position the enla rge d positioning section of the sensor aga inst the the side of the mounting clamp. NOTE The P5 Pre -Trip te st must be run to inactiva te the alarm (refer to secti on 3. 2. 1). Ev aporat or Gri lle Return Sensor Mounting Cla mp Enl arg ed Pos itionin g (Plast ic) Se ct ion Figure 6- 24.
SECTI ON 6 6- 25 T- 268-07 6.24 SUCTION SOL ENOID VALVE (SSV) a. Repla cing the Coil NOTE The coil may be repl aced without removing t he refrigeran t. 1. Disconnec t leads by unplugging the connector. Remove snap c ap or locknut. Lift off coil. (See Figure 6-27) 2.
6- 26 T- 268-07 Ambi ent T emp erature Col d Coil 10 _ F 6.45 ohm s 40 _ F 6.90 ohm s 70 _ F 7.40 ohm s 100 _ F 7.90 ohm s 4. Plug in the connector for the modula tion valve. NOTE A cold c oil is a coil whic h has not bee n opera ting and is a ssumed to be at ambie nt tem perature.
SECTI ON 6 6- 27 T- 268-07 6 2 5 3 7 1 4 1. Power A ssembly 2. Body F lange Gas kets 3. Seat G asket 4. Bulb 5. Cage As sembly 6. Body F lange 7. Body F lange Screws Figure 6- 29 . Ther mos ta tic Expa nsion Va lve - - Alc o 5. The therma l bulb is locate d below the ce nter of the suction line ( 4 o’c lock position).
6- 28 T- 268-07 NOTE Suction pre ssure must be 0.5 kg/cm @ (6 psig) below valve maximum operating pr essure (M .O.P.) . Ex a mple : if valv e ra ted at 55 MO P, suction pressure must be below t his MOP. Recomme nded pressur e is below 3.44 kg/cm @ (49 psig).
SECTI ON 6 6- 29 T- 268-07 NOTE Thi s packag ing has b een d esig ned to p rotect t he Controller /DataCORDER module from both physica l and electr ostatic dischar ge dama ge during stora ge an d transit. Installation: Insta ll t he module by re versing the ste ps in section 6.
6- 30 T- 268-07 circ uits (re fe r to sec tion 5). A de scription of the te st points follows: NOTE Use a digita l voltmete r to mea sure a c volta ge betwee n TP’s and ground (TP9), exce pt f or TP8.
SECTI ON 6 6- 31 T- 268-07 7. Put unit back in servic e unde r norma l load and check head (d isch arge) pressu re. Detaile d Proce dure: 1. Drain and f lush the water circuit of the condenser coil .
6- 32 T- 268-07 NOTE If the conde nser c ooling water is not being used as drinking wa ter or is not re- circ ulate d in a closed or tower syste m, neutr alizing is not necess ary. 11. Put the unit bac k in servic e and operate under normal load. Check the hea d pre ssure.
SECTI ON 6 6- 33 T- 268-07 Table 6- 3. Rec omm ende d Bolt Torque Va lues BOL T DI A. THRE ADS TO RQUE MKG FREE SPINNING #4 #6 #8 #10 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 40 32 32 24 20 18 16 14 13 12 11 10 5.2 in- lbs 9.6 in- lbs 20 in-lbs 23 in-lbs 75 in-lbs 1 1 ft-lbs 20 ft-l bs 31 ft-l bs 43 ft-l bs 57 ft-l bs 92 ft-l bs 124 ft -lbs 0.
6- 34 T- 268-07 Tab le 6 -5. Comp ressor T orq ue Val ues T O R Q U E R A N G E SIZE T O R Q U E R A N G E U S A G E DIAME TER T HREADS F T L B M K G U S A G E (INCHE S) PER INCH F T - L B M K G 1/16 27 ( pipe) 8- -1 2 1.1 1 - - 1. 66 Pipe P lug - - Cr ankshaft 1/8 20 ( pipe) 6- -1 0 0.
SECTI ON 6 6- 35 T- 268-07 Tab le 6 -6. T emperatu re-Pressu re Chart - - R -134a BOL D FI GURES = Inches M ercury V ac uum (cm Hg V AC) LIGH T FIGURES = psi g (kg /cm @ ) TEMPERA TURE PR ESSURE TEMPERA T UR E PRESSURE _ _ _ _ F _ _ _ _ C Psig Kg/ cm 2 Bar _ _ _ _ F _ _ _ _ C Psig Kg/ cm 2 Bar -- 4 0 -- 4 0 14.
6- 36 T- 268-07 80 100 120 140 160 180 200 220 240 260 280 300 320 60 70 80 90 100 110 120 psig (43.3) (37.8) (32.2) (26.7) ( 21.1) (15.6) _ _ _ _ F ( _ _ _ _ C) (Bar) (5.5) (6.9) (8.3) (9.7) (1 1. 0) (12.4) (13.8) (15.2) (16.6) (19.3) (20.7) (22.0) 35 _ _ _ _ F( 1 .
SECTI ON 6 6- 37 T- 268-07 -- 6 -- 4 -- 2 0 2 4 6 8 10 12 14 60 70 80 90 100 110 120 Ambi ent Ai r T emperat ure psig _ F (Bar) (.97) (.83) (.69) (.55) (.41) (.28) (.14) (0) ( - - .14) ( - - .28) ( - - .41) 0 _ _ _ _ F ( - - 17.8 _ _ _ _ C) Box (48.9) (43.
SECTION 7 7- 1 T-268-07 SECTION 7 ELECTRICAL WIRING S CHEMA TIC AND DIAGRAMS 7.1 INTRODUCTION PLEASE REFER T O F ILE T - - 268 DIAGRAMS FOR SCHEMA TICS AND DIAGRAMS.
INDEX INDEX Index- 1 T-268-07 A Acc ess Panel, 2-1 Air M akeup V ent Lower Fr esh, 2-13 Upper Fr esh, 2-13 Air - - Cooled Condenser , 2-15, 2- 17 Alarms Controller, 3-1 1 DataCO RDER, 3-28 DataCO RDER.
INDEX Index- 2 T -268-07 C o o l i n gR e l a y ,4 - 4 ,4 - 6 ,4 - 8 ,4 - 1 2 Current S ensor Module, 2-8, 2-9 D Data Elect rical, 2-1 1 Refr igeration Sy stem, 2-10 DataCO RDER, 3-24 Acc ess to F unc.
INDEX INDEX Index- 3 T-268-07 H Heat Contac tor , 2-8, 2-9, 3-15, 4- 10, 4-12, 5-2 Heat Exc hanger , 2-3, 2- 15, 2-17, 5-3 Heat Relay , 3-15, 4-10, 4- 12, 4-14, 4-15, 5-2 Heater, 2-1 Alarm , 3-12 Comp.
INDEX Index- 4 T -268-07 P Pad, Key , 2- 8 Part s Identif ication Number (P ID), 1-1, 1- 2, 2-1 PID, ( Part s Identif ication Number) , 1-1, 1-2, 2-1 Plug, F usible, 2-6, 2-15 Port Soft ware Program m.
INDEX INDEX Index- 5 T-268-07 S Safet y and Pr otect ive Devices , 2-19 Safety Summary Gener al, Safet y-1 W arning and Cautions , Saf ety- 2 Sample, S tandard Conf iguration Repor t, 3- 34 Schem atic.
INDEX Index- 6 T -268-07 U Unit, Rem ote Monitoring, 2- 8 Unit Operat ion, 4-2 Unit Serial Number , 2-1 Upper F resh Air M akeup V ent , 2- 13 USDA, 2-3, 3- 31, 3-32 USDA Pr obe Receptac le, 2-3 V V a.
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