Instruction/ maintenance manual of the product 73183 Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models Reach-In B-Series Commercial Series Refrigerated Kitchen Equipment Hoshizaki America, Inc.
2 IMPOR T ANT Only quali ed ser vice technicians should inst all, ser vice , and maintain the unit. No ser vice or maint enance should be under tak en until the t echnician has thoroughl y read this Ser vice Manual.
3 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 5 I. Specications .......................................................................................
4 D . Diagnostic Char t ......................................................................................................... 35 1 . Unit Not Cooling .................................................................................................
5 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 , or damage to the unit. W ARNING Indicates a hazardous sit uation which could result in death or serious injury .
6 •Makesur ethepowers witchisinthe"OFF"positionbefor eplugginginor unplugging the unit to r educe the r isk of electric shock. •Donotuseaunitwithadamagedpow ercor d.
7 I. Specications A. Nameplate Ratings Model A C Supply V oltage Amperes Design Pr essur e (PSIG) Refr igerant (oz.) HIGH LOW 1 34a 404A CR1B-FS/HS 1 1 5/60/1 4 240 12 0 11 - CF1B-FS/HS 9 450 250 -.
8 2. One Section/T wo Section/Thr ee Section Unit: mm (in.) Ad ditional Dimensions Model Inter ior Width Inter ior Height Inter ior Depth Door Stay Open P osition Caster Height (Standard) Caster Height (Option) Leg Height (Option) One Section 579 (22.
9 II. General Inf ormation A. Construction 1 . One Section Contr ol Module Condenser F an Motor Condenser Displa y Module F ront P anel Door Door Gasket Contr ol Bo x P ower S witch Door Lock Models C.
10 2. T wo Section Models CR2B-FS/HS and CF2B-FS/HS Model Shown: CR2B-HS P ower C ord Compr essor Condenser F an Motor Condenser F ront P anel Contr ol Module Displa y Module P ower S witch Door Lock .
11 3. Three Section Compr essor Condenser F an Motor F ront P anel Contr ol Module Displa y Module P ower S witch Door Lock Light Reservoir Float S witch Reservoir Cover Door Door Gasket Contr ol Bo x.
12 B. Sequence of Operation 1 . Sequence Cy c les and Shutdo wn The steps in the sequence ar e as outlined below . Note: 1 . There is a slight dela y at star tup. 2. W hen power is turned on, the 2-hour high-temperatur e alar m timer is bypassed. Theref ore , a high-temperatur e alarm can occur at star tup .
13 b) F r eez er 1 . Startup/Cool Down MH and PH energiz e. Ther e is a slight dela y befor e cabinet t emperatur e or high-temper atur e alarm (Hi) appears on DM and Comp , ConFM, and Ev apFM energiz e. 2. Cool D o wn Ac hie ved CM monitor s cooling of the cabinet via CTh.
14 2. Sequence Flow Charts a) Refr iger at or Refr ig er at or Sequence Flow Chart Legend: Comp -compressor ConFM -condenser f an motor CTh -cabinet thermistor DTh- defrost thermistor EvapFM -e vaporat or f an mot or MH -mullion heat er 1 . Startup/Cool Do wn 2.
15 b) F r eez er F r eezer Sequence Flow Chart 3. Cool Down Restart Legend: Comp -compressor ConFM -condenser f an motor CTh -cabinet thermistor DH -defrost heat er DTh- defrost thermistor EvapFM -e vaporat or f an mot or MH -mullion heat er PH -perimeter heater 1 .
16 C. Display Module Whenthepo wers witchismov edtothe"ON"positionther eisaslightdela y ,thenthe current cabinet t emperature is displa yed. F rom the displa y module, the cabinet setpoint andtemper atur edispla yscalecanbechanged.
17 2. Controls and A djustments a) Default Set tings 1 . T emperatur e Set ting: Refrigerat or : 36°F (2°C). F reez er : -4°F (-20°C). 2. T emperatur e Displa y Scale: F . b) T emperat ur e Setpoint The temper atur e setpoint is the v alue for the a v erage cabinet temper atur e.
18 Displa y C able F ig. 2 D . Contr ol Module All models are pr etest ed and f actor y set . C A UTION 1 . The control module is fr agile, handle v er y carefull y . 2. Do not change wir ing and connections. Ne v er misconnect t erminals. 3. Do not shor t out pow er suppl y t o t est f or voltage .
19 2. Alarm Safeties Alar m signals ar e designed t o pr ot ect the unit and f ood product. These alarms give inf ormation or war nings in the e vent the unit is operating out of accept ab le paramet ers. Should one of the alar ms occur , f ollow the instructions in the table belo w t o addr ess the alar m.
20 E. Compressor O ver load, Short Cyc le Pr ot ection, and High-Pr essure S witch 1 . Compr essor Ext ernal or Int ernal Ov erload If combined temper atur e/amperage v alue is abov e the limit speci ed by the compressor man uf acturer , the compr essor ov er load operat es independently t o turn of f the compressor .
21 III. T echnical Data A. Refr ig er ation Cir cuit Ev aporat or F ans (2 or 3 depending on model) Ev aporat or Expansion V al v e Compr essor Low -Side Access Va l v e Condensat e P an High-P ressur.
22 B. W iring Diagr ams 1 . CR1B-FS/HS, CR3B-FS/HS * High-Pr essure Switc h Cut-out 270±1 0 PSIG Cut-in 1 90±20 PSIG *.
23 2. CR2B-FS/HS, CR3B-FS/HS * High-Pr essure Switc h Cut-out 270±1 0 PSIG Cut-in 1 90±20 PSIG *.
24 3. CF1B-FS/HS, CF3B-FS/HS ** Defr ost Thermostat Cut-out 12 0 ° F±5 ° F (49 ° C±3 ° C) Cut-in 70 ° F±5 ° F (21 ° C±3 ° C) * High-Pr essure Switc h Cut-out 490±1 0 PSIG Cut-in 370±20 P.
25 4. CF2B-FS/HS, CF3B-FS/HS ** Defr ost Thermostat Cut-out 12 0 ° F±5 ° F (49 ° C±3 ° C) Cut-in 70 ° F±5 ° F (21 ° C±3 ° C) * High-Pr essure Switc h Cut-out 490±1 0 PSIG Cut-in 370±20 P.
26 5. CR3B-FS/HS Receptac le Bo x Connection 6. CF3B-FS/HS Receptac le Bo x Connection Note: Only the t op r eceptacles ha ve po wer . Note: Only the t op r eceptacles ha ve po wer .
27 IV . Service Diagnosis W ARNING 1 . This unit should be diagnosed and repair ed only by quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . 2. Risk of electr ic shock. Use e xtr eme caution and e xer cise safe electrical practices .
28 1 . R efr igerat or 7) Startup/Cool Down– Ev apFM and MH energiz e . Ther e is a slight dela y , then Comp and ConFM ener gize and cabinet temper atur e or high-t emperatur e alar m (Hi) appears on DM. a) StartupDiagnosis: Chec k that Ev apFM ener gize .
29 8) Cool Down Ac hie ved –CTh cools t o 3°F (1 .7°C) below setpoint. Ev apFM and MH continue . Comp and ConFM de-ener gize. Diagnosis: If Comp and C onFM do not de-energiz e,conr mCThstatus . See"IV .C . Ther mistorChec k.
30 2. F reezer 7) Startup/Cool Down– MH and PH ener gize. There is a slight dela y , then Comp , ConFM, and Ev apFM ener gize and cabinet t emperature or high-t emperature alarm (Hi) appears on DM. Once DTh reaches 32 ° F (0 ° C), 4-hourComp cum ulativ e run timer star ts.
31 c) HPS Activ ation: Conr m C onFM is ener gized and f an blade turns freel y . Check that the condenser coil is not clogged or restrict ed. Check that ther e ar e no r estrictions in the refrigeration cir cuit (dr ier , TXV).
32 Defrost T ermination: Has DTh w ar med to 59°F (1 5°C)? If not yet conrmed, conr m DThstatus . See"IV .C . Ther mistorChec k."IfDThisgoodbutdefrostt er mination temper atur e is not r eached, conrm DH amp draw and contin uity .
33 B. Control Module Chec k Bef or e r eplacing a contr ol module that does not sho w a visible def ect and that you suspect is bad, alw ay s conduct the follo wing chec k pr ocedur e.
34 "IV .A.2.9)Defrost"and"IV .C . Ther mistorChec k."Ifcomponentsfailt ostar t,control module must be r eplaced.
35 D . Diagnostic Chart Bef or e consulting the diagnostic char ts, chec k the follo wing: •Checkthesetpoint. F orf actor ydef aultset tings,see"II.
36 Unit Not Cooling - P ossible Cause 1 1. Compr essor Overload a) Dir ty condenser . b) Condenser f an not operating. c) Def ective . 12 . Compr essor a) Def ectiv e. 13 . Condenser a) Dirt y . 14 . Ev aporat or See"2. Evaporat orisFr ozenUp .
37 V . R eplacement of Components W ARNING 1 . This unit should be diagnosed and repair ed only by quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re .
38 2. Brazing W ARNING 1 . R-1 34a and R-404A themselv es ar e not ammable at atmospheric pressur e and temper atur es up t o 1 7 6°F (80°C). 2. R-134a and R-404A themsel ves ar e not explosiv e or poisonous.
39 4) Close the low -side val v e and high-side val v e on the g auge manif old. 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.
40 B. Impor tant Not es f or Component R eplacement C A UTION When r eplacing a component listed belo w , see the notes t o help ensure pr oper operation.
41 VI. Cleaning and Maint enance Instructions A. Cleaning W ARNING 1 . Bef or ecleaningtheunit,mov ethepowers witchtothe"OFF"positionand unplug the unit to pr ev ent electr ic shoc k b y une xpected entrance of w at er into the unit or injury by mo ving par ts.
42 C. Shutdown and Long St orage W ARNING 1 . When pr eparing the unit for long st orage, pr e vent the door s fr om closing t o reduce the risk of childr en get ting trapped. 2. T o reduce the risk of electric shock, do not t ouch the at tachment plug or pow er s witch with damp hands.
An important point after buying a device Hoshizaki 73183 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hoshizaki 73183 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hoshizaki 73183 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki 73183 you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki 73183 will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki 73183, 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 73183.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki 73183. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki 73183 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
