Hoshizaki HRFW-77MS4 User manual

1
COMMERCIAL REFRIGERATOR
FREEZER
HRFW-77MS4
Date
03
-
10
-
1
6
Rev No
0
DOC NO
RBC/SM/
03
-
10
-
16

2
Table of Contents:
SNO
CONTENT
PAGE NO
1
Safety Instructions
3
2
Product Indent Use
5
3
Dimension Layout
6
5
Technical Specification
9
6
Procedure to
open the Canopy
1
1
7
Procedure to replace the Evaporator fan motor
1
2
8
Procedure to replace the Dew Collector
14
9
Procedure to replace the Defrost Heater
15
10
Procedure to replace the Defrost Sensor
1
5
11
Procedure to replace the Appliance Sensor
16
12
Procedure to replace the Condenser Fan Motor
16
13
Procedure to replace the Carel Controller
17
14
Carel
Controller
Connections
18
15
Procedure to Replace the Door Switch
2
0
16
Procedure to replace the Door Gasket
21
17
Procedure to replace the
Door Assembly
22
18
Carel
Controller
Programming
23
19
Carel Controller Alarms
24
20
Wiring drawings
25
21
Trouble Shooting
26
22
Disposal
28

3
Safety instructions:
The following instructions contain important safety precautions an should be
strictly observed
WARNING: There is a possibility of death or serious injury to 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 to the service person and a third party or
the user or damage their property due to improper service operations or defects
in serviced products.
WARNING:
Always ask the user to keep children away from the work area. They may
be injured by tools or disassembled products.
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
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.
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 flames in the vicinity, and ensure good ventilation.
3) If the refrigerant should leak in servicing, immediately put out any fire used in
the vicinity.

4
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 flame.
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
before recharging the refrigerant and checking for further leaks. If the leaking part
cannot be located, be sure to check again for further leaks after recharging the
refrigerant. Leaked refrigerant may produce a poisonous gas when coming in
contact with an open flame of a gas cooking stove or a fan heater.
7) Before servicing, check the surface temperature of the refrigeration circuit to
prevent a burn.
Keep the following in mind when making electrical connections.
1) Check for proper earth connections, and repair if necessary to prevent electric
shocks.
2) Always use service parts intended for the applicable models for replacement of
defective parts. Use proper tools to secure the wiring. Otherwise abnormal
operation or trouble may occur and cause electric shocks.
3) Check for proper part installations, wiring condition and soldered or soloderless
terminal connections to avoid fire, heat or electric shocks.
4) Be sure to replace damaged or deteriorated power cords and lead wires to
prevent fire, 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 fire.
6) After servicing, always use a megohmmeter(500V DC)to check for insulation
resistance of at least 1 megohm between the live part and dead metal part.
7) Do not service the electrical parts with wet hands to prevent electric shocks.
8) The capacitors used for the compressor and the other components may be
under high voltage and should be discharged properly before servicing.

5
CAUTION
After servicing, follow the instructions below:
1) Always check the unit for proper operation before finishing services.
2) Be sure to reassemble the parts completely. Loose assembly of such parts as
control box cover may cause entrance of vermin's resulting in a short circuit
between terminals and possible ignition.
Product Intended Use :
HRFW -77MS4
These products are solid door commercial refrigerator used to store/preserve
Frozen food products. This is mainly used in commercial establishment.
It operates at 230V/50Hz power input.
HRFW-77 is two door Combi model. It uses electronic temperature controller,
R404A as refrigerant, CFC free insulation and are classified climatic class T (5) i.e.
Ambient 40°C and 40% RH
Nomenclature
H – Hoshizaki
R – Refrigerator
F – Freezer
W– Made by Western Refrigeration

6
DIMENSIONAL LAYOUT :

7
INSTALLATION REQUIREMENTS:
LOCATION:
For best operating results,
1) The freezer should not be located next to ovens, grills and other high heat
producing equipments.
2) The location should provide a firm foundation for the equipments.
3) Avoid a site where dripping is not allowed. Especially a side by side , back to
back installation.
4) Do not expose the unit to direct sun light or higher temperatures.
5) Allow 100 cm clearance at front of the unit for smooth operation. Also
allow 30 cm clearance from the ceiling to the top of the unit.

8
SET UP:
1) Cut the vinyl shipping tape and remove the carton
2) Take out the accessory shelves, shelf clips and legs. Attach the four shelf
clips horizontally to the shelf posts. Place the shelf’s on the shelf clips.
3) Remove the two bolts on the bottom of the unit.
4) Turn the unit 90 degrees on the pallet, tilt the unit sideways, and screw in
the two adjustable legs.
5) Tilt the unit in opposite direction and screw the other two legs.
6) Slide out the pallet form the unit.
7) Level the freezer in both left and right, front and rear sides.

9
TECHNICAL SPECIFICATIONS: HFW-77
Sl.
No.
PARAMETERS DETAILS
1
Model name
H
R
FW
-
77MS4
2 Gross volume
Freezer : 305 Liters
Refrigerator : 305 Liters
3 Net volume
Freezer : 277 Liters
Refrigerator : 286 Liters
4 Temperature setting range
Freezer:
-
16°C to
-
23°C
Refrigerator: -
2°C to 12°C (operation
range - not adjustable)
5 No load @ ambient condition
01
hour 56
mins @ 40.6°C ambient
and 75% RH
6 External dimensions (mm)
700 (W) x 810 (D) x 2050 (H
-
with
150mm leg)
7
Internal dimensions (mm)
596 (W) x 700 (D) x 1505 (H)
8
Footprint (floor space) (sq. m)
0.57 sq. m
9
Outer cabinet material
SS 430 2B hair line No. 4 finished
10
Inner cabinet material
SS 430 2B mirror finished
11
Net weight
1
27
Kg
12
Insulating material / thickness
PUF (CFC free) / 50mm
13
Shelves external dimension (mm) /
quantity 570 (W) x 625 (D) / 4 nos

10
14 Door type / Door frame / type of
section / number of doors
Solid swing door/ SS 430 2B hair line
No. 4 finished / integrated handle /
2 number
15
Door Switch
Yes
1
6
Door external dimension (mm)
676.5 (W) x 760 (H)
17
Type of wheels / legs / qty. /
leveling bolt
4 nos of adjustable legs or 4 nos of
caster wheels
18
Power source (primary)
Electric / 230V AC / 50 Hz
19 Filter drier type / make / model
Solid core / Danfoss / 023Z8128
(DCL032S x 2/3mm)
20
Capillary bore / length / number /
heat exchange 0.044" / 3000mm / 1 no / 2000mm
21
Refrigerant number / mass
R404A / 550 gram
22
Maximum current / power @
ambient condition
Rated current / power @ ambient
condition
3.75 Amps / 710 W @ 40.6°C
ambient and 75% RH (D condition)
3.3 Amps / 600 W @ 40.6°C ambient
and 75% RH (D condition)
23 Stabilizer rating (recommended)
1.5 KVA, In put = 110 to 280V AC,
Out put = 190 to 250V AC