Whirlpool 3EHC 50/51-1 Installation guide

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ICE MAKER
MODELS
3EHC 50/U -1
Part No. 756651

SPECIFICATIONS
1. REFRIGERATION UNIT
Compressor-O,150 kw.(l/s HP) Reciprocating (Tecumseh AE3425A)
Voltage2201240 V, 50 Hz
Phase-l
Refrigerant Charge-225 Gr. (9 Oz.) R-l 2
Oil Charge-295 MI. (10 FI. Oz.)
Drier-Molecular Sieve-High Side
Relay-Current (Magnetic) type with Normal-Open
start contacts
Condenser-Air Cooled fin and tube
2. FREEZING PLATE
Stainless Steel
3. CAPACITY
At 21°C (70°F) Ambient and 15°C (60°F) Water, approxi-
mately 25 kg. (46 Ibs.) of ice will be delivered to storage
bin per 24 hours.
4. STORAGE CAPACITY
16 kg. (35 Ibs.) maximum
5. CABINET DIMENSIONS
Height-875 mm (347/16”)
Width-455 mm (17%“)
Depth-606 mm (23’3/,6”)
6. CABINET FINISH
Baked Enamel and Stainless Steel

INSTALLATION INSTRUCTIONS
GENERAL INFORMATION
LEVEL UNIT
UNPACK
BOTTOM FLAPS
REMOVE
2 INTERIOR
PACKING
1.
2.
3.
4.
5.
6.
Lay carton on rear face and break open bottom
flaps.
Set carton upright with all four flaps outward.
Lift carton up and off of machine.
Remove all tape and packaging material from the
outside and inside of the cabinet.
Remove the front grill; take out the screws secur-
ing the grill at the bottom and lift if free of cabinet.
Turn the fan by hand to make certain it moves
freely.
LOCATE UNIT
AIR FLOW
IMPORTANT
T4
FOR THE PLUMBER
2 OBSERVE LOCAL CODES
1. Place unit so that the front side will be completely
unobstructed, to provide proper air flow.
2. Area should be well ventilated with temperature
above 15°C (SOOF).Best results are obtained between
21°C (70°F) and 32°C (90°F).
3. Provision for electricity, water and drain connec-
tions should be determined.
4. The unit may be closed in on the top and three
sides, but the front MUST BE unobstructed for air
circulation and proper operation. Installation
should be such that the cabinet can be moved
forward for servicing, if necessary.
After placing unit in position, check to make
certain the unit is level side to side and front to
back.
Accurate leveling is essential for proper operation.
Unit should be shimmed so that it is solid as well
as level. The shims should be of hard permanent
type material such as masonite.
If required by sanitation code, seal the cabinet to
the floor with an approved caulking compound.
UTILITIES
OBSERVE LOCAL CODES
G
WATER 1
.
DRAIN
3
ELECTRICITY 2
Each installation is unique but will require:
1. A cold water inlet of 6.35 mm (l/d”) OD soft copper
tubing and a shut-off valve.
2. Either a gravity drain system or a sump pump to lift
the water to an existing drain.
3. An electrical branch circuit of 220/240 Volt, 50 Hz, 1
phase, with a 10 Amp delayed action fuse.
CONNECT TO WATER
1. Use 6.35 mm (%I”) OD soft copper tubing for the cold
water supply.
2. Provide a convenient manual shut-off valve in the
water Ii ne.
3. Position the tubing so it can enter the access hole
located in the right-hand rear of the cabinet. The
tubing should extend beyond the cabinet front
when the cabinet is pushed back into position.
See Figure 1.

NOTE: Always purge the water line before making
the final connection to the inlet tube to prevent
possible water valve malfunction.
After the cabinet is in place, bend the tubing to
meet the connection at the water valve. This joint
provides a convenient disconnect for service. Be
sure the tubing is clear of compressor, to prevent
rattle. 2 5
RIGHT END VIEW BACK VIEW
CABINET
5.35 mm 0.0. WATER
LINE COMPRESSION
FllTlNG AT
WATER INLET
VALVE
1
HOLE FOR FIELD
5”PPlEO WATER
WATER LINE TO CONNECT
TO WATER VALVE FIlTING mm
4
FIGURE 1
CONNECT THE DRAIN
1.
2.
3.
The unit is provided with a gravity drain.
The ideal installation has a standpipe (32 mm,l%”
minimum) installed directly below the outlet of the
drain tube.
It may be desirable to insulate drain line
thoroughly up to drain inlet.
SUMP PUMP
1. When a drain connection below the level of the unit
is not available, a sump pump may be used to lift the
water to an available drain.
2. Pumps of approved design for operation on 220/240
Volt, 50 Hz current may be purchased locally.
3. Install sump pump on floor behind ice maker with
discharge tube to the rear. Run bin drain directly to
sump pump as shown in the illustration.
1
SVMP PUMP HAS FLOAT
SWlTCnTHATCYCLES 2 A00 PLASTIC HOSE
3
FIELDSUPPLIED
WATER LINE
THRU THIS HOLE
NOTE: Electric connection to sump pump should
be from a circuit that remains energized continually.
FOR THE ELECTRICIAN
ELECTRICAL REQUIREMENTS
A 220/240 Volt, 50 Hz, 10 Amp fused electrical supply is
required (time delay fuse or circuit breaker is recom-
mended). It is recommended that a separate circuit,
serving only this appliance be provided.
ELECTRICAL GROUND IS REQUIRED ON
THIS MACHINE
GROUNDING
For your personal safety permanently ground this unit
in accordance with applicable local codes and ordi-
nances. It is recdmmended that a separate, permanent
ground connection be made to the unit using a green/
yellow colored, insulated conductor of appropriate size
from a grounded cold water pipe*, a grounded lead in
the service panel or a properly driven and electrically
grounded ground rod. Do not ground to a gas supply
pipe. Do not connect to electric power supply until unit
is permanently grounded. Connect the ground wire to
the approved ground and then connect to the metal
frame of the unit.
‘Cold water pipe must have metal continuity to electrical ground
and not be interrupted by plastic. rubber, or other electrically
insulating connectors (including water meter or pump) without
adding a jumper wire at these connections.
WIRING
CONFORM TO ALL LOCAL CODES
AND ORDINANCES
Remove grill mounting screws for access to motor com-
partment and water connections. Electrical connec-
ticns are made to the electrical box which is located at
the rear of the machine. Run permanent type 1.6 mm +
(# 14) wiring through the hole provided in the electrical
box to the line screws on the terminal board. (See figure
2 next page.)

GROUND TERMINAL
REAR VlEW OF UNIT
COMPARTMENT
(FROM BACK OF
ICE MAKER1
FIGURE 2
LINE TERMINALS
CHECK OPERATION
Start the unit by turning the service switch to “ON”
and opening the line water valve,
NOTE: Left is “OFF” - Middle is “ON” - Right is
“CLEAN.” In “CLEAN” position, only the pump
operates.
Check condenser fan to make sure it is revolving.
Water will not enter pump pan until freezing plate
gets cold and machine goes into a harvest cycle.
Check for even water flow over freezing plate. Unit
must be level for proper operation.
Check for desired ice cube thickness and, after 24
hours, adjust if necessary. Maximum ice yield will be
obtained with ice thickness 13 mm to 16 mm.
Replace grill.
FREEZING CYCLE
HOW IT WORKS
l Compressor runs
l Condenser fan runs
l Water pump runs (circulates water)
l Cutter grid is warm to touch
When the desired ice slab thickness is reached, the
harvest cycle begins and the following happens:
l Evaporator thermostat is satisfied
l Compressor keeps running
l Condenser fan stops
0 Water pump stops
l Hot gas solenoid opens
0 Water inlet valve opens
l Excess water is flushed out of the drain pan
0 Cutter grid is warm to the touch
Machine resumes freezing after slab is released from
evaporator and the cutting process begins.
When the storage bin is filled, bin thermostat opens.
l Cutter grid remains on
THINGS TO REMEMBER
The unit will make up to 25 kg. (46 Ibs.) of ice per day
under ideal conditions. These conditions are: (1) Room
temperature 21°C (70°F); (2) Water temperature 15°C
(60°F).
As the room and water temperatures vary, so will the
amount of ice produced. Higher operating tempera-
tures will result in reduced ice production.
The storage bin has a maximum capacity of 16 kg. (35
Ibs.). When the bin is filled, the unit stops making ice.
The storage bin is not refrigerated and some meltage
will occur. This, too, varies with room temperature.
The unit needs good air circulation to perform effi-
ciently. Keep the front grill and the condenser clean.
The water system, including filter screen in the water
inlet solenoid valve, need to be cleaned periodically for
good circulation. Instructions are located on the inner
door panel.
OPERATING
INSTRUCTIONS
Before starting, wash out interior of cabinet with a Bak-
ing Soda solution of 30 MI. (1 oz.) soda to 1 Liter (1 qt.)
of warm water. Rinse thoroughly.
Make certain the water is turned on.
Turn switch to the “ON” position.
IMPORTANT: Allow unit to run for 3 hours before
expecting ice, nnd for 24 hours before trying to set
the thickness control.

BEFORE OPERATING THE ICE MAKER
It is your responsibility to make sure that the ice maker:
l has been installed where it is protected from the
elements.
l is located so that the front is not blocked, to provide
proper air flow.
l is properly leveled.
l is located in a well ventilated area with temperature
above 15°C (60°F). Best results are obtained at tem-
peratures between 21°C (70°F) and 32°C (90°F).
l is properly connected to a water supply and drain.
l is properly connected to electricity. A 220/240 Volt, 50
Hz, 1 phase, 10 amp fused electrical supply is required.
NOTE: Time delay fuse or circuit breaker is
recommended.
l is properly electrically grounded.
l is not operated by anyone not able to use it properly.
l is used only for the job it was designed to perform.
l is properly maintained.
ICE MAKER OPERATION
How It makes Ice:
1. Water iscirculated over a freezing plate. As the water
freezes, minerals in the water are rejected. The absence
of minerals produces a clear sheet of ice.
2. When the desired thickness is reached, the ice sheet
is released and slides on to a cutter grid. The grid
divides the sheet into individual cubes.
3. The water containing the rejected minerals is drained
out at the end of each freezing cycle.
4. Fresh water then enters the machine for the next ice
making cycle.
5. Cubes fall into the storage bin. When the bin is full
the ice maker shuts off automatically and restarts when
more ice is needed.

-8
General Information
This ice maker has a sliding panel to cover the ice
thickness control and the cycle switch. To gain
access to the controls remove the screw in the
center and slide panel to the left. (See illustration)
SIZING OF ICE CUBES
Your ice maker will produce 32 mm x 32mm(11/4”x11/4”)
cubes or 19 mm x 19 mm (3/d’ x3/d’) cubelets. Any time a
change in cube size is desired, the cutting grid can be
changed at a modest cost. See your Whirlpool dealer
for more information.
Your ice maker has been preset to produce ice approx-
imately 13 mm (l/2”) thick. The thickness can be in-
creased or decreased by resetting the thickness control,
Figure 1, however best performance will be obtained at
the 13 mm (l/2”) thickness.
FIGURE 1- SERVICE SWITCH
The “ON” position of the service switch is for the
normal ice making cycle. The “OFF” position stops
machine operation. The “CLEAN” position is used
whenever solutions are circulated through the water
system for cleaning. At this position only the water
pump will operate.
IMPORTANT: In all switch positions except “OFF”
the cutter grid remains energized and placement of
metal objects on grid wires can cause the grid fuse
to open or can cause damage to grid wires. To
completely disactivate all electrical circuits, the
power supply must be disconnected.
FILTERING & TREATING WATER
In some areas it may be beneficial to filter or treat the
water being supplied to the ice machine to reduce
water system maintenance (see Cleaning 8 Sanitizing
tottT;ze Making System) and to produce the best type
For information on filtering and treating the water see
your WHIRLPOOL commercial ice maker dealer.
OILING
All components of the ice maker are lubricated at the
factory and should not require any additional oiling
for the normal life of the machine.

GENERAL CARE 81CLEANING
Periodic inspection and cleaning is necessary to keep
your ice cube maker operating at peak efficiency and
to assure a sanitary ice producing mechanism. Your
WHIRLPOOL dealer is well qualified to perform this
service for you.
CLEANING EXTERIOR SURFACES
Enamel finishes may be cleaned with a mild deter-
gent. Regular use of a good household appliance
cleaner and wax is recommended for protecting the
finish.
Stainless steel surfaces should be cleaned with a
good stainless steel cleaner.
NOTE: Do nor use abrasive cleaners on either painted
or stainless surfaces.
CLEANING THE CONDENSER
Dirty or clogged condenser fins prevent proper air
flow resulting in reduced ice capacity and subject the
unit to higher than normal operating temperatures.
Access to the Condenser
Place service switch in the “Off” position.
NOTE: Failure to place switch in off position will allow
condenser fan to cycle on and off which could cause
injury when the grilled front panel is removed.
Remove screws from the bottom of the grilled front
panel Figure 2. Pull forward and down to remove the
panel.
FIGURE 2
Use
dirt a vacuum cleaner and stiff brush to remove the and accumulated lint from the condenser fins.
Figure 3.
CAUTION: Avoid contact with air cooled condenser
fins which may be sharp.
FIGURE 3
CLEANING & SANITIZING
THE ICE MAKING SYSTEM
Impurities are rejected from the circulating water that
freezes into ice. These impurities collect on the
freezing mechanism and in the water system and
form a hard scaly deposit. Generally this scale
prevents a rapid release of the ice slab during the
harvest cycle. The water and ice making system,
therefore, should be periodically cleaned and
sanitized. The frequency of cleaning will depend on
local water conditions and how rapidly scale accumu-
lates.
Cleaning and sanitizing is not too difficult. Having a
qualified service representative clean the system the
first time should make subsequent cleaning easier to
perform, if the operator wishes to take over this
portion of the ice machine maintenance.
Follow this approved procedure to assure that the
machine is clean and sanitary:
1. Place service switch, Figure 1, in off position.
2. Remove cutter grid (two thumb screws) Figure 4.
The grid slides off of two mounting tabs near the
water pan.
3. Remove all ice from the storage bin and cutter
grid. Care should be exercised when removing ice off
the cutter
grid wires. 9R
rid to prevent breaking or stretching of
unning water on the ice sheet will rapidly
melt the ice. Ice may also have been forming on the
freezing plate and should be removed before pro-
ceeding further.
4. Drain the water pan (Figure 5) by removing the
rubber plug. Replace the plug.

FIGURE 4
5. Pour 2 Liters (2 qts.) of hot water into the water pan
and turn the service switch to clean. This step warms
up the system and allows the cleaning solution to be
more effective. Allow to circulate 5 minutes. Turn switch
to off and drain.
6. Prepare the cleaning solution by thoroughly mixing
200 Gr. (1 oz.) of powdered citric acid or phosphoric
acid into 2 Liters (2 qts.) of hot water. Commercial ice
machine cleaners are also available in liquid form and
should be mixed according to instructions on the label.
WARNING: Most ice machine cleaners are citric or
phosphoric acid which can cause irritation even
after dilution. In case of contact with eyes, flush
eyes thoroughly with fresh water and contact a
physician immediately. In case of contact with skin,
rinse well with water. If swallowed, give large
amounts of water and contact a physician immedi-
ately. Do not induce vomiting. KEEP OUT OF REACH
OF CHILDREN.
7. Pour cleaning solution into water pan and turn
switch to “clean.” If solution foams while pouring,
stop until foaming subsides, then add balance of
solution. Allow solution to circulate until scale has
dissolved. The circulating solution may not contact
scale on the side flanges of the freezing plate. To
remove this scale use a stainless steel sponge or pad
dipped in cleaning solution and scrub the side
flanges until scale is removed. Generally scale will be
dissolved in 15 to 30 minutes. Severe scale formation
may require repeating the cleaning process with a
fresh quantity of solution if the scale has not dis-
solved after 30 minutes.
8. Turn switch to off and drain.
9. Follow cleaning with two fresh water rinses,
circulate each rinse for 5 minutes and drain.
10. This completes the “in place” cleaning and
sanitizing of the water system and freezing plate.
Other interior components must also be cleaned and
sanitized.
REMOVAL AND CLEANING OF
INTERIOR COMPONENTS
11. Remove ice retainer baffle, Flgure 6.
12. Remove water pan, (two thumb screws) Figure 5.
THUMB SCREWS
FIGURE 5
be%,
FIGURE 6
13. Remove hose from the water pump.
14. Remove the plastic water distributor tube from
the freezing plate. Pull one end forward to release the
rubber end plugs.
15. Wash the “interior” components with a mild
detergent solution, rinse with clean water and
sanitize in a solution of 30 Ml. (V’4oz.) of common
laundr bleach to 4 Liters (4 qts.) of water.
Ni! TE: Plastic parts are not to be subjected to
temperatures over 60°C (140°F). Do not wash in
dishwasher.

16. Wash the storage bin, door, gasket and ice scoop
with mild detergent, rinse with clean water and
sanitize with the sanitizing solution (see Step 16).
17. Replace the water distributor, water pan, and
cutter grid.
NOTE: Check the following:
1. Hose from water valve is in water pan.
2. Cutter grid is electrically plugged in.
3. Rubber plug is in water pan.
4. Hose from water pan is inserted into drain
opening.
CUlTER GRID FUSE
Disconnect power and remove electrical control
box, Figure 7. The grid fuse will be located as shown
in Figure 8. When replacing use the same size (amp
rating). Higher amp ratings will not provide adequate
protection. Lower amp ratings will cause the fuse to
fail prematurely.
FIGURE 7
WINTER SHUT DOWN
Remove all ice from storage bin. Shut off water
supply. Disconnect lines at water valve and to drain.
Water and drain lines must be blown out if the unit
will be subjected to freezing temperatures during
shut down. Reconnect water and drain lines. Failure
to do so may cause these lines to freeze and rupture.
Clean and sanitize the ice machine and storage bin
before placing back in operation.
IF THE MACHINE DOES NOT PRODUCE ICE
Check the following before calling a serviceman:
1. Unit does not run -
A. Check for blown fuse in electrical supply to
machine
8. Is Power ON?
C. Switch must be in “On” posotion
D. Room temperature too low (must be above 13
C). Unit may be shut down on bin thermostat
even though bin is not full.
2. Unit runs but produces no ice -
A. Check water supply to make sure it is open
B. Service switch must in the “On” position.
3. Unit runs but produces very little ice -
A. Operating in extremely high room temperature
(normal for ice production to be low).
B. Dirt or lint blocking air flow thru finned con-
denser. (Clean)
C. Unit may have scale build up in water and
freezing system. Check and clean if necessary.
4. Grid not cutting ice sheets-
A. Check grid fuse (see section on how to re-
place).
B. Check grid harness plug to make sure the
connection is secure.
If the above suggestions do not correct machine
operation, contact your Whirlpool Distributor.
FUSE-PUSH
IN & TWST / I
FIGURE 8
10