Instruction/ maintenance manual of the product MRH KM-600MAH KM-650MAH Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models KM-320MAH, MWH KM-515MAH, MWH, MRH KM-600MAH KM-650MAH, MWH(-M), MRH KM-901MAH, MWH, MRH/3 Modular Crescent Cuber Hoshizaki America, Inc.
2 W ARNING Only quali ed ser vice technicians should inst all and ser vice the appliance . T o obtain the name and phone number of y our local Hoshizaki Cer ti ed Ser vice Repr esentativ e, visit www .hoshizaki.com. No ser vice should be under tak en until the technician has thor oughly r ead this Ser vice Manual.
3 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 6 I. Construction and W ater/R efrigeration Cir cuit Diagr am ..............................................
4 5. Bin Control Select or or Har vest P ump Timer Oper ation (S4 dip s witch 7) ............. 48 6. F actor y Use (S4 dip s witch 8) ................................................................................ 49 7 . F r eez e Timer (S4 dip s witch 9 & 1 0) .
5 C . Wiring Diagrams ......................................................................................................... 87 1 . Diagr ams Without Harvest P ump Timer R ela ys ..................................................... 87 a) KM-320M_H, KM-51 5M_H, KM-600MAH .
6 Impor tant Safety Inf ormation Throughout this man ual, notices appear t o bring your at tention t o situations which could result in death, serious injur y , damage t o the appliance, or damage t o proper t y . W ARNING Indicates a hazar dous situation which could r esult in death or serious injury .
7 W ARNING, continued • The appliance is not intended f or use by per sons (including children) with r educed ph y sical, sensor y , or mental capabilities, or lac k of e xper ience and knowledge , unless they ha ve been giv en super vision or instr uction concerning use of the appliance by a per son responsib le f or their safety .
8 I. Construction and W ater/R efrigeration Cir cuit Diagram A. Construction 1 . Air-Cooled Models (MAH) Ther mostatic Bin Contr ol W ater Suppl y Inlet Condenser Drier Contr ol Box Spra y T ubes Cont.
9 2. W at er -Cooled Models (MWH(-M)) W ater Suppl y Inlet Condenser Drier Contr ol Box Spra y T ubes Contr ol Switch W ater P ump Float S witch Compr essor Ther mostatic Expansion V alv e W ater R eg.
10 3. Remot e Models (MRH/3) Receiv er T ank W ater Suppl y Inlet Junction Bo x es Drier Contr ol Box Spra y T ubes Contr ol Switch W ater P ump Float S witch Compr essor Ther mostatic Expansion V alv.
11 W at er Supply Float Switch Drain Check V alv e Thermostatic Expansion V alve Compr essor Hot Gas Va l v e High-P ressure Switch Strainer Fa n Drier Condenser Evapor ator Discharge Line Suction Lin.
12 W at er Supply Float Switch Drain Check V alv e Thermostatic Expansion V alve Compr essor Hot Gas Va l v e High-P ressure Switch Strainer Drier Condenser Evapor ator Discharge Line Suction Line W a.
13 W at er Supply Cleaning V alv e Float Switch Drain Check V alv e Compr essor Hot Gas Va l v e Check V alv es (KM-90 1MRH) High-P ressure Switch Strainer Fa n Drier Condenser Evapor ator Discharge L.
14 II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flo w Char t 1 . "E" and "G" Control Boar d without Harvest P ump Timer Operation Components Energized w.
15 1 . Bin F ull Shutdown Dela y: • Fill Cy c le –1 5 sec. af ter activ ation. • Harvest Cyc le –At the end of the har vest cy cle, or up t o 15 sec. into the freez e cy cle if activat ed at the end of the harvest cy cle. • F reeze Cycle –1 5 sec.
16 2. "G" Control Boar d with Harvest P ump Timer Oper ation 1 to 3-min. harvest timer in control (S4 dip s witch 1 & 2) • Maximum inlet wat er v alv e time: 6 min. or the length of harvest minus 50 sec. (S4 dip switch 7), whiche v er is shor t er .
17 B. Service Diagnosis W ARNING • The appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re .
18 1 . "E" and "G" Control Boar d without Harvest P ump Timer Diagnosis 3) P ow er On : T ur n on the power suppl y , then mov e the control s witch to the "ICE" position. A 5-sec. delay occur s. • "E" Contr ol Board: CB red "PO WER OK" LED tur ns on.
19 4) 1 -Minut e F ill Cy c le – LED 4 is on. WV energiz es . Af ter 1 min., CB chec ks for a closed FS. If FS is closed, har v est cy cle begins. If har vest c y cle begins (Comp , HGV , and FMR energiz e), continue to st ep 5. If FS is open, WV r emains ener gized thr ough additional 1 -min.
20 e) Initial Harvest Cy c le T ermination Diagnosis : W hen the ther mist or r eaches 48°F (9°C), CB reads 3.9 kΩ fr om the ther mistor and turns har vest t er mination ov er to the har v est timer (S4 dip s witch 1 & 2). Check dischar ge line temperatur e .
21 d) PM Diagnosis : Conr m wat er is o wing ov er e v aporator fr om PM and not WV . If PM de-energiz es once freeze begins , check f or 1 1 5V AC at CB K1 #4 (R) t o neutral (W). If 1 1 5V A C is not present, r eplace CB . If 1 1 5V AC is pr esent and PM is de-energized, check f or 1 1 5V A C at control s witch #5 (R) to neutral (W).
22 7) Pump-Out Cy cle – LEDs 1, 3, and 2 are on (1 0/20 second pump-out). Timing of the rst pump-out is dependent on CB . "E" CB rst pump-out is af t er the r st fr eeze c y cle. "G" CB rst pump-out is det er mined by S4 dip s witch 5 & 6.
23 9) Shutdown a) "E" Control Boar d: Thermostatic Bin Contr ol (TBC): When the appliance is running , hold ice in contact with the thermostatic bulb . TBC switch opens within 1 0 sec., shut ting down the appliance. TBC is f act or y set, and generall y no adjustment is requir ed.
24 2. "G" Control Boar d with Harvest P ump Timer Diagnosis 3) P ow er On : T ur n on the power suppl y , then mov e the control s witch to the "ICE" position. A 5-sec. delay occur s. CB red "PO WER OK" LED and gr een "BC CLOSED" LED turn on.
25 4) 1 -Min. Fill Cy c le – LED 4 is on. WV and X1 1 rela y ener giz e. Af ter 1 min., CB chec ks f or a closed FS. If FS is closed, the har v est cy cle begins. If har vest c y cle begins (Comp , HGV , FMR energiz ed), continue t o step 5a. If FS is open, WV r emains ener giz ed through additional 1 -min.
26 5b) Harvest P ump Timer – LEDs 1, 3, and 2 ar e on. When the thermistor r eaches 48°F (9°C), CB reads 3.9 kΩ fr om the ther mistor and turns har vest t er mination ov er to the har v est timer (S4 dip s witch 1 & 2). 50 sec. bef or e the har v est timer ter minat es , LED 3tur ns on and PM ener giz es.
27 6) F r eeze Cyc le – LED 1 is on. Comp , FMR, and PM continue . FM and LL V energiz e . HGV and X1 0 r ela y de-energize . Appliance is held in freez e b y a 5-min. shor t cy cle prot ection timer . Af t er 5-min. timer terminates and FS opens , fr eeze c y cle t er minat es .
28 f) Refr ig er ant P r essur es, HM, and TXV Diagnosis : If ev aporator is still not cooling , check r efr igerant pr essures. See "VIII.B . P erformance Dat a." Ne xt, chec k HM operation. If r efrigeration pressur es are abov e HM setpoint and HMis bypassing , replace HM.
29 is complete . The pump-out frequency contr ol (S4 dip switch 5 & 6) is f actory set, and generall y no adjustment is r equir ed. Howe ver , the pump-out frequenc y control can be set to ha ve a pump-out occur e very cycle , or e very 2, 5, or 1 0 cycles .
30 C. Control Boar d Check Bef or e r eplacing CB that does not sho w a visib le def ect and that y ou suspect is bad, alw ay s conduct the follo wing chec k pr ocedur e. This procedur e will help you v erify your diagnosis. Alar m R eset: If CB is in alar m (beeping), press the "ALARM RESET" b ut ton on CB while CB is beeping.
31 D . Bin Contr ol Check 1 . Thermostatic Bin Contr ol Check TBC shuts down the icemak er within 1 0 sec. when ice contacts the ther mostatic b ulb , reg ardless of the cy cle at activation. NO TICE When the ambient t emperature is belo w 45°F (7°C), TBC opens and shuts do wn the appliance e v en if the ice storage bin is empty .
32 2. Mechanical Bin Control Chec k and Cleaning a) Mechanical Bin Contr ol Check This appliance uses a le v er -actuated pro ximit y s witch to contr ol the ice le vel in the stor age bin. No adjustment is requir ed. T o check TBC, f ollow the st eps below .
33 b) Mechanical Bin Contr ol Cleaning Scale ma y b uild up on MBC . Scale can cause the actuator paddle and magnet t o stick. In this case, MBC should be cleaned. W ARNING CHOKING HAZARD: Ensure all components , fast eners, and thumbscr ews ar e securel y in place af t er the icemak er is ser viced.
34 E. Float S witch Chec k and Cleaning FS is used to det er mine that there is suf ficient w ater in the wat er tank af ter the 1 -min. ll c y cle and af ter each harvest cy cle. FS is also used to det er mine that the appr opriate v olume of wat er has been conv er ted int o ice befor e switching out of the fr eez e cy cle.
35 2. Float Switc h Cleaning Depending on local wat er conditions, scale ma y b uild up on FS . Scale on the switch can cause the oat t o stic k. In this case, FS should be cleaned. 1) T ur n of f the power suppl y . 2) Remo ve the fr ont panel, then mo v e the contr ol s witch to the "OFF" position.
36 F . Thermist or Check T o check thermistor r esistance , f ollow the steps belo w . 1) T ur n of f the power suppl y . 2) Remo ve the fr ont panel. Mov e the contr ol s witch to the "OFF" position. 3) Remo ve the contr ol bo x cov er . 4) Remo ve the thermistor fr om the r efrigerant tubing.
37 G. Diagnostic T ables 1 . No Ice Pr oduction No Ice Pr oduction - Possib le Cause 1. P ower Suppl y a) Of f, b lown fuse , or tripped break er . b) Not within specications. 2. Main T ransf ormer (3 phase and KM-650MWH-M only) (208/230V A C/1 1 5V AC) a) V oltage tap s witch not set t o pr oper v oltage .
38 No Ice Pr oduction - Possib le Cause 15 . Ther mist or See "II.F . Ther mistor Chec k" a) Loose, disconnect ed, or def ective. 16 . P ump Motor a) Motor winding open. b) Bearing wor n out or loc ked r otor . c) Def ectiv e capacitor . d) Mechanical seal worn out.
39 F reeze-Up - P ossible Cause 1 1. Thermostatic Expansion V alv e a) Def ectiv e. 12 . Hot Gas V alv e a) Closed or restricted. 13 . Liquid Line V alv e a) Open. F reeze Cyc le 1. Evapor at or a) Scaled up . b) D amaged. 2. Spra y T ubes and/or Spray Guides a) Dir ty .
40 Low Ice P r oduction - P ossible Cause Long F reeze Cyc le 1. Evapor at or a) Scaled up , dir ty . 2. Float Switch See "II.E. Float Switch Chec k and Cleaning" a) Scaled up , dir ty . b) Float sticking . c) Def ectiv e s witch. 3. Inlet W ater V alv e a) Leaking by .
41 III. Controls and A djustments • A Hoshizaki e x clusive contr ol board is emplo yed in KM series appliances. • All models are pr etest ed and f actor y adjust ed. • F or a contr ol boar d chec k pr ocedur e, see "II.C . Control Boar d Check.
42 A. Control Boar d L a y out 1 . "E" Control Boar d "E" Control Boar d P ar t Number 2A1 41 0-02 "E" Contr ol Boar d Micropr ocessor (control boar d r e vision le vel i.
43 "G" Control Boar d P ar t Number 2A3792-0 1 "G" Contr ol Boar d • K4 (red) Connect or Mechanical Bin Contr ol or K4 Jumper (thermostatic bin control application) Label (contro.
44 B. LED Lights and A udible Alarm Saf eties 1 . "E" Control Boar d At star tup , a 5-second delay occur s while the control boar d conducts an internal timer check.
45 2. "G" Control Boar d At star tup , a 5-second delay occur s while the control boar d conducts an int er nal timer check. A beep occur s when the control s witch is mov ed to the "ICE" position. The red "PO WER OK" LED indicat es pr oper contr ol v oltage and r emains on unless a control v oltage pr oblem occur s.
46 C. Set tings and Adjustments NO TICE Dip s witches ar e f actor y set. F ailure t o maintain f actory set tings ma y adver sel y af fect perf or mance and warr anty cov erage .
47 2. Har v est Timer (S4 dip switc h 1 & 2) The har v est timer star ts counting when the thermistor r eaches 48°F (9°C) at the e v aporator outlet and the contr ol board reads 3.9 kΩ fr om the ther mistor . The har vest timer is f act or y set, and generall y no adjustment is requir ed.
48 4. Pump-Out F requency Contr ol (S4 dip switch 5 & 6) NO TICE Do not adjust on KM-51 5M_H without har vest pump timer . Adjustments t o this set ting on KM-51 5M_H without har vest pump timer ma y adver sely af f ect perf or mance and warr anty cov erage .
49 (2) Harvest P ump T imer , "G" Control Boar d NO TICE F actory set for pr oper operation. Do not adjust. Adjustment outside of the f actor y def ault set ting ma y r esult in damage t o the appliance. Depending on the har v est pump timer set ting, the pump mot or either sta ys of f or is energiz ed the last 50 seconds of har vest.
50 8. Float Switc h Select or (S5 dip switc h 1): "G" Control Boar d NO TICE Do not adjust. This must be lef t in the f actor y def ault position or the icemaker will not operat e corr ectl y . 9. Re ll Counter (S5 dip switch 2 thr ough 5): "G" Contr ol Boar d NO TICE Do not adjust.
51 IV . R efr igeration Cir cuit and Component Ser vice Inf ormation W ARNING • This appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . • Mov e the control s witch to the "OFF" position and turn off the po wer supply .
52 2. Brazing W ARNING • R-404A itself is not ammab le at atmospheric pressur e and temperatur es up t o 1 7 6°F (80°C). • R-404A itself is not e xplosiv e or poisonous.
53 5) Disconnect the gauge manif old hose from the v acuum pump and at tach it t o a refrigerant service cylinder . Remember t o loosen the connection and purge the air fr om the hose. F or the r equir ed r efrigerant charge , see the rating label inside the icemaker .
54 B. Component Service Infor mation NO TICE When r eplacing a component listed belo w , see the notes t o help ensur e pr oper operation. Component Notes Compr essor 1 phase: Install a ne w star t capacitor , run capacitor , and star t rela y . 3 phase: Install a new magnetic cont actor .
55 V . Maint enance The maintenance schedule belo w is a guideline. More fr equent maintenance ma y be requir ed depending on wat er quality , the appliance's en vir onment, and local sanitation regulations W ARNING • Only quali ed ser vice technicians should service the appliance.
56 VI. Pr eparing the Appliance for P eriods of Non-Use NO TICE • When st oring the appliance f or an e xt ended time or in sub-fr eezing t emperatur es, f ollo w the instructions below t o pr e v ent damage.
57 3. On wat er -cooled model, remo v e the w ater fr om the wat er -cooled condenser: 1) Make sur e the power suppl y is off , then remo ve the fr ont panel and right side panel. 2) Close the condenser wat er supply line shut-of f val ve . If connected t o a closed loop sy stem, also close the condenser r eturn line shut-of f v al v e .
58 VII. Disposal The appliance contains r efrigerant and must be disposed of in accor dance with applicable national, st at e , and local codes and r egulations.
59 VIII. T echnical Infor mation A. Specication Sheets 1 . KM-320MAH AC SUPPLY VOLTAG E 115/60/1 AMPERAGE 9.7 A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
60 2. KM-320MWH AC SUPPLY VOLTAG E 115/60/1 AMPERAGE 8.2 A (5 Min. Freeze AT 104°F / W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
61 3. KM-51 5MAH AC SUPPLY VOLTAG E 115/60/1 AMPERAGE 11.7 A (5 Min. F reeze AT 104°F/W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
62 4. KM-51 5MWH AC SUPPLY VOLTAG E 115/60/1 AMPERAGE 9.6 A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
63 5. KM-51 5MRH AC SUPPLY VOLTAG E 115/60/1 AMPERAGE 11.3A (5 Min. F reeze AT 104°F/W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
64 6. KM-60 0MAH AC SUPPLY VOLTAGE 115- 120/60/1 AMPERAGE 12.0 A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 15 A MAXIMUM FUSE SIZE 15 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP.
65 7 . KM-650MAH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 7.2 A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 15 A MAXIMUM FUSE SIZE 15 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
66 8. KM-650MWH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 5.4 A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 15 A MAXIMUM FUSE SIZE 15 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
67 A W AITING D A T A 9. KM-650MWH-M Note: We r eserve the right to mak e changes in specications and design without prior notice..
68 1 0. KM-650MRH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 7.4 A (5 Min. Freeze AT 104°F/WT 80°F) MINIMUM CIRCUIT AMPACITY 15 A MAXIMUM FUSE SIZE 15 A APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F) PER 24 HR. Temp.(°F) 50 70 90 lbs.
69 1 1 . KM-90 1MAH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 11.4 A (5 Min. F reeze AT 104°F/W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.
70 1 2. KM-90 1MWH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 8.7A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 15 A MAXIMUM FUSE SIZE 15 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
71 1 3. KM-90 1MRH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V) AMPERAGE 11.6A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
72 1 4. KM-90 1MRH3 AC SUPPLY VOLTAGE 208- 230/60/3 AMPERAGE 7.0A (5 Min. Freeze AT 104°F /W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Am bient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
73 B. P erf ormance Data 1 . KM-320MAH 70/21 325 147 311 141 287 130 80/27 315 143 293 133 265 120 90/32 311 141 278 126 251 114 lbs./day kg./da y 100/38 304 138 272 123 226 103 70/21 80/27 90/32 watts 100/38 70/21 117 0.44 97 0.37 86 0.33 80/27 102 0.
74 2. KM-320MWH 70/21 352 160 348 158 324 147 80/27 349 158 342 155 309 140 90/32 348 158 337 153 308 140 lbs./day kg./da y 100/38 337 153 330 150 281 127 70/21 80/27 90/32 watts 100/38 70/21 430 1.63 476 1.80 682 2.58 80/27 465 1.76 535 2.03 822 3.11 90/32 476 1.
75 3. KM-51 5MAH 70/21 501 227 482 218 447 203 80/27 486 221 456 207 416 189 90/32 482 218 435 197 396 180 lbs./day kg./day 100/38 472 214 426 193 361 164 70/21 80/27 90/32 watts 100/38 70/21 188 0.71 162 0.61 147 0.56 80/27 168 0.64 128 0.48 124 0.47 90/32 162 0.
76 4. KM-51 5MWH 70/21 500 227 481 218 465 211 80/27 486 220 457 207 445 202 90/32 481 218 436 198 422 191 lbs./day kg./da y 100/38 481 218 433 196 409 186 70/21 80/27 90/32 watts 100/38 70/21 515 1.95 548 2.07 805 3.05 80/27 540 2.04 591 2.24 966 3.6 6 90/32 548 2.
77 5. KM-51 5MRH 70/21 491 223 480 218 443 201 80/27 482 219 465 211 417 189 90/32 480 218 452 205 408 185 lbs./day kg./da y 100/38 465 211 442 200 368 167 70/21 80/27 90/32 watts 100/38 70/21 198 0.75 168 0.64 153 0.58 80/27 175 0.66 128 0.48 128 0.49 90/32 168 0.
78 6. KM-60 0MAH 70/21 592 269 566 257 516 234 80/27 572 260 532 241 474 215 90/32 566 257 503 228 447 203 lbs./day kg./da y 100/38 551 250 490 222 396 180 70/21 80/27 90/32 watts 100/38 70/21 259 0.98 212 0.80 191 0.72 80/27 223 0.84 150 0.57 154 0.58 90/32 212 0.
79 7 . KM-650MAH 70/21 661 300 632 287 591 268 80/27 639 290 594 269 553 251 90/32 632 287 562 255 520 236 lbs./day kg./da y 100/38 624 283 552 250 482 219 70/21 80/27 90/32 watts 100/38 70/21 232 0.88 194 0.73 172 0. 65 80/27 203 0.77 143 0.54 139 0.
80 8. KM-650MWH 70/21 661 300 649 294 616 280 80/27 652 296 633 287 591 268 90/32 649 294 620 281 581 264 lbs./day kg./da y 100/38 637 289 611 277 546 248 70/21 80/27 90/32 watts 100/38 70/21 744 2.81 784 2.97 1169 4.42 80/27 775 2.93 838 3.17 1405 5.
81 9. KM-650MWH-M A W AITING D A T A Note: 1 . P r essure dat a is r ecor ded at 5 min. into fr eezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e reser v e the right to mak e changes in specications and design without prior notice.
82 1 0. KM-650MRH 70/21 632 287 612 278 574 260 80/27 617 280 586 266 541 246 90/32 612 278 564 256 521 236 lbs./day kg./day 100/38 601 272 554 251 482 219 70/21 80/27 90/32 watts 100/38 70/21 267 1.01 216 0.82 195 0.74 80/27 228 0.86 149 0.56 155 0.59 90/32 216 0.
83 1 1 . KM-90 1MAH 70/21 874 396 832 378 785 356 80/27 842 382 778 353 736 334 90/32 832 378 732 332 687 312 lbs./day kg./day 100/38 826 375 721 327 646 293 70/21 80/27 90/32 watts 100/38 70/21 240 0.91 212 0.80 187 0.71 80/27 219 0.83 175 0.66 158 0.
84 1 2. KM-90 1MWH 70/21 912 414 887 402 849 385 80/27 893 405 854 388 815 370 90/32 887 402 827 375 787 357 lbs./day kg./da y 100/38 878 398 818 371 751 341 70/21 80/27 90/32 watts 100/38 70/21 876 3.32 1010 3.82 1530 5.79 80/27 978 3.70 1186 4.49 1893 7.
85 1 3. KM-90 1MRH 70/21 889 403 859 389 803 364 80/27 866 393 818 371 755 343 90/32 859 389 785 356 724 328 lbs./day kg./da y 100/38 843 382 771 350 668 303 70/21 80/27 90/32 watts 100/38 70/21 246 0.93 219 0.83 194 0.74 80/27 225 0.85 182 0.69 165 0.
86 1 4. KM-90 1MRH3 70/21 899 408 874 397 817 371 80/27 880 399 842 382 772 350 90/32 874 397 815 370 749 340 lbs./day kg./da y 100/38 855 388 800 363 689 313 70/21 80/27 90/32 watts 100/38 70/21 254 0.96 222 0.84 203 0.77 80/27 230 0.87 181 0.69 174 0.
87 C. W iring Diagrams 1 . Diagrams Without Harv est Pump Timer Rela y s a) KM-320M_H, KM-51 5M_H, KM-60 0MAH * High-P ressur e S witch Air -Cooled Model W ater -Cooled Model Cut-out 41 2± 22 PSIG 384± 22 PSIG Cut-in 327±22 PSIG 284±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.
88 b) KM-650MAH, KM-650MWH, KM-90 1MAH, KM-90 1MWH * Contr ol T ransf or mer Output 1 0.5V at 1 15V * High-P ressur e S witch Air -Cooled Model W ater -Cooled Model Cut-out 41 2± 22 PSIG 384± 22 PSI.
89 c) KM-650MRH, KM-90 1MRH * High-P ressur e S witch Cut-out 41 2± 22 PSIG Cut-in 327±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.5V at 1 15V.
90 d) KM-90 1MRH3 * High-P ressur e S witch Cut-out 41 2± 22 PSIG Cut-in 327±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.5V at 1 15V.
91 2. Diagrams With Harv est P ump Timer Rela ys a) KM-51 5MAH * High-P ressur e S witch Cut-out 41 2± 22 PSIG Cut-in 327±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.
92 b) KM-650MAH, KM-650MWH, KM-90 1MAH * High-P ressur e S witch Air -Cooled Model W ater -Cooled Model Cut-out 41 2± 22 PSIG 384± 22 PSIG Cut-in 327±22 PSIG 284±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.
93 c) KM-650MWH-M * High-P ressur e S witch Cut-out 384± 22 PSIG Cut-in 284±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.5V at 1 15V.
94 * High-P ressur e S witch Cut-out 41 2± 22 PSIG Cut-in 327±22 PSIG 0 * Contr ol T ransf or mer Output 1 0.5V at 1 15V d) KM-650MRH.
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If you already are a holder of Hoshizaki MRH KM-600MAH KM-650MAH, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hoshizaki MRH KM-600MAH KM-650MAH.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki MRH KM-600MAH KM-650MAH. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki MRH KM-600MAH KM-650MAH along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
