Hoshizaki HNC-120BE-L-B, HNC-150BE-L-B, HNC-180BE-L-B, HNC-210BE-L-B, HNC-120BE-R-B SERVICE MANUAL

NO. S051-800

ISSUED: MAR.26,2010

REVISED: JUN.14,2013

HOSHIZAKI

COUNTER SHOWCASE

MODEL

HNC-120BE-L/R-B
HNC-150BE-L/R-B
HNC-180BE-L/R-B
HNC-210BE-L/R-B

SERVICE MANUAL

IMPORTANT

This manual should be read carefully before the showcase is serviced or
maintenance operations are performed. Only qualified service technicians
should install, service, and maintain the showcase. Read the warnings contained
in this booklet carefully as they give important information regarding safety.
Please retain this booklet for any further reference that may be necessary.

 CONTENTS

1. SAFETY INSTRUCTIONS ---------------------------------------------------------------------------- 1

2. MODEL NAME -------------------------------------------------------------------------------------------3

3. OPERATING INSTRUCTIONS ----------------------------------------------------------------------4

4. DIMENSIONS/SPECIFICATIONS ------------------------------------------------------------------ 5
[a] HNC-120BE-L-B [Auxiliary code C-0 and earlier] ------------------------------------------ 5
[b] HNC-120BE-L-B [Auxiliary code C-1] --------------------------------------------------------- 6
[c] HNC-120BE-L-B [Auxiliary code C-2 and later] ---------------------------------------------7
[d] HNC-120BE-R-B [Auxiliary code C-0 and earlier] ------------------------------------------ 8
[e] HNC-120BE-R-B [Auxiliary code C-1] --------------------------------------------------------- 9
[f] HNC-120BE-R-B [Auxiliary code C-2 and later] ------------------------------------------- 10
[g] HNC-150BE-L-B [Auxiliary code C-0 and earlier] -----------------------------------------11
[h] HNC-150BE-L-B [Auxiliary code C-1] ------------------------------------------------------- 12
[i] HNC-150BE-L-B [Auxiliary code C-2 and later] -------------------------------------------- 13
[j] HNC-150BE-R-B [Auxiliary code C-0 and earlier] ----------------------------------------- 14
[k] HNC-150BE-R-B [Auxiliary code C-1] ------------------------------------------------------- 15
[l] HNC-150BE-R-B [Auxiliary code C-2 and later] ------------------------------------------- 16
[m] HNC-180BE-L-B [Auxiliary code C-0 and earlier] --------------------------------------- 17
[n] HNC-180BE-L-B [Auxiliary code C-1] ------------------------------------------------------- 18
[o] HNC-180BE-L-B [Auxiliary code C-2 and later] ------------------------------------------- 19
[p] HNC-180BE-R-B [Auxiliary code C-0 and earlier] ---------------------------------------- 20
[q] HNC-180BE-R-B [Auxiliary code C-1] ------------------------------------------------------- 21
[r] HNC-180BE-R-B [Auxiliary code C-2 and later] ------------------------------------------- 22
[s] HNC-210BE-L-B [Auxiliary code C-0 and earlier] ---------------------------------------- 23
[t] HNC-210BE-L-B [Auxiliary code C-1] -------------------------------------------------------- 24
[u] HNC-210BE-L-B [Auxiliary code C-2 and later] ------------------------------------------- 25
[v] HNC-210BE-R-B [Auxiliary code C-0 and earlier] ---------------------------------------- 26
[w] HNC-210BE-R-B [Auxiliary code C-1] ------------------------------------------------------ 27
[x] HNC-210BE-R-B [Auxiliary code C-2 and later] ------------------------------------------ 28

PAGE

5. REFRIGERATION CIRCUIT ----------------------------------------------------------------------- 29

6. WIRING DIAGRAM ----------------------------------------------------------------------------------- 30
[a] Auxiliary code C-0 and earlier ----------------------------------------------------------------- 30
[b] Auxiliary code C-1 and later -------------------------------------------------------------------- 31

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7. CONSTRUCTION ------------------------------------------------------------------------------------- 32

8. REMOVAL AND REPLACEMENT ---------------------------------------------------------------- 33
[a] SIDE COVER -------------------------------------------------------------------------------------- 33
[b] TOP COVER --------------------------------------------------------------------------------------- 33
[c] FRONT GLASS ----------------------------------------------------------------------------------- 33
[d] SIDE FRAME -------------------------------------------------------------------------------------- 34
[e] CENTER FRAME --------------------------------------------------------------------------------- 34
[f] HOLDER - EVAPORATOR PIPE ------------------------------------------------------------- 34
[g] UNIT ------------------------------------------------------------------------------------------------- 34

9. REFRIGERANT SERVICE INFORMATION ----------------------------------------------------- 35

10. CONSTANT PRESSURE EXPANSION VALVE AND REFRIGERANT CHARGE ---- 36
[a] SPECIFICATIONS -------------------------------------------------------------------------------- 36
[b] FUNCTION ----------------------------------------------------------------------------------------- 36
[c] CONSTRUCTION -------------------------------------------------------------------------------- 36
[d] REPLACEMENT ---------------------------------------------------------------------------------- 37

11. SERVICE DIAGNOSIS ------------------------------------------------------------------------------ 38

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1. SAFETY INSTRUCTIONS

The following instructions contain important safety precautions and should be strictly
observed. The terms used here are dened as follows:

WARNING: There is a possibility of death or serious injury for the service person and

a third party or the user due to improper service operations or defects in
serviced products.

CAUTION: There is a possibility of injury for the service person and a third party or the

user or damage to their property* due to improper service operations or
defects in serviced products.

* The term “damage to their property” here refers to extensive damage to household

effects, houses and pets.

WARNING

1. Always ask the user to keep children away from the work area. They may be injured by

tools or disassembled products.

2. When there is no need to energize the unit during disassembly or cleaning, be sure to

unplug the unit or disconnect the main power supply before servicing the unit to prevent
electric shocks.

3. If the unit must be energized for inspection of the electric circuit, use rubber gloves to

avoid contact with any live parts resulting in electric shocks.

4. Keep the following in mind when servicing the refrigeration circuit:

(1) Be sure to recover the refrigerant. Do not discharge it into the atmosphere. It will

affect the environment.

(2) Check for any ames in the vicinity, and ensure good ventilation.

(3) If the refrigerant should leak in servicing, immediately put out any re used in the

vicinity.

(4) When unbrazing the refrigeration circuit connections, check that the circuit is

completely evacuated. The refrigerant may produce a poisonous gas when coming
in contact with an open ame.

(5) Do not braze in an enclosed room to prevent carbon monoxide poisoning.

(6) In case of a refrigerant leak, locate and repair the leaking part completely. Leaked

refrigerant may produce a poisonous gas when coming in contact with an open
ame.

1

(7) Before servicing, check the surface temperature of the refrigeration circuit to

prevent a burn.

5. Keep the following in mind when making electrical connections:

(1) Check for proper grounding connections, and repair if necessary to prevent electric

shocks.

(2) Always use service parts intended for the applicable model for replacement

of defective parts. Use proper tools to secure the wiring. Otherwise abnormal
operation or trouble may occur and cause electric leaks or re.

(3) Check for proper part installations, wiring conditions and soldered or solderless

terminal connections to avoid re, heat or electric shocks.

(4) Be sure to replace damaged or deteriorated power cords and lead wires to prevent

re, heat or electric shocks.

(5) Cut-off lead wires must be bound using closed end connectors or the like, with their

closed ends up to avoid entrance of moisture that could lead to electric leaks or
re.

(6) After servicing, always use a megohmmeter (500V DC) to check for the insulation

resistance of at least 1 megohm between the live part (attachment plug) and the
dead metal part (grounding terminal).

(7) Do not service the electrical parts with wet hands to prevent electric shocks.

(8) The capacitors used for the compressor and other components may be under high

voltage and should be discharged properly before servicing.

CAUTION

1. After servicing, follow the instructions below:

(1) Check for water leaks in the water supply and drain pipes to prevent damage to the

vicinity including household effects.

(2) Always check the unit for proper operation before nishing services.

(3) Be sure to reassemble the parts completely. Loose assembly of such parts as

control box cover may cause entrance of vermins resulting in a short circuit
between terminals and possible ignition.

2

2. MODEL NAME

H NC - 120 B E - L/R - B

High Grade Color of Exterior
B: Black
Counter Showcase
Unit Location
Width (cm) L: Unit on left
120, 150, 180, 210 R: Unit on right

Development Order HE model
Starts from A

Unit on right

Unit on left

3

3. OPERATING INSTRUCTIONS

IMPORTANT

Hoshizaki Counter Showcase is intended for temporary food display.
Constructed with much glass, this showcase gives relatively insufcient heat
insulation and poor cooling performance compared with refrigerators in general.
For safe and efcient operation, be sure to follow the instructions below.

1) Do not leave foods in the showcase after service hours, or they may dry or spoil. Foods

that should not dry must be covered or wrapped up in a plastic lm.

2) Store only pre-refrigerated items in the showcase. It takes longer for foods to cool in the

showcase than in a refrigerator.

3) Do not leave the doors open or open them too frequently. The interior temperature may

rise, resulting in food deterioration.

4) Do not pack the showcase with foods. The cooling performance may reduce, resulting in

food deterioration.

5) The showcase should not be exposed to direct sunlight or located next to ovens, grills

or other high heat producing equipment. The interior temperature may rise, resulting in
food deterioration.

6) The ambient temperature should not exceed 30°C. The cooling performance may

reduce, resulting in food deterioration.

7) The food mount can be used on either side. The food temperature is controllable by

turning over the food mount to change the distance from the interior bottom.

Normal condition
When food temperature is too low For more intensive cooling

8) The maximum safe height for displaying food products is 3.5” (9 cm) above the interior

bottom. Food products should not be placed above this height as they may not remain
cold enough to avoid spoilage.

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4. DIMENSIONS/SPECIFICATIONS

[a] HNC-120BE-L-B [Auxiliary code C-0 and earlier]

5

[b] HNC-120BE-L-B [Auxiliary code C-1]

6

[c] HNC-120BE-L-B [Auxiliary code C-2 and later]

7

[d] HNC-120BE-R-B [Auxiliary code C-0 and earlier]

8

[e] HNC-120BE-R-B [Auxiliary code C-1]

9

[f] HNC-120BE-R-B [Auxiliary code C-2 and later]

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