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ADJUSTMENTS

Adjustment Of The Timer & Switch Assembly

One complete revolution of the cam on the timer
takes eight minutes. The normal setting is three
and one-half minutes, as set at the factory. lt is
important that the length of the harvest cycle allow
enough time for all the ice cubes to fall from the
evaporator. Too short of a time will cause the
evaporator to freeze up and stop ejecting ice into
the bin. Too much time wastes icemaking capacity,
energy and water. Adjustment of the harvest cycle
may require a corresponding adjustment of the
cube size control. Rotating the shaft of the timer
cam clockwise will allow putting the machine into
either the freezing cycle or harvest cycle, as
required in the cleaning instructions.

To Adjust The Timer & Switch Assembly:

The length of the harvest cycle can be changed by
loosening the set screw on the cam, and then
rotating the shaft so that the opening between the
cams change. More of an opening between the
cams = more harvest time. The harvest time may
be reduced if not needed. This will yield more ice
per day.

Electrcial power present
in the control box can
cause personal injury. 

Disconnect power before
begining to adjust timer.

ADJUSTING TIMER

CAM

TIMER

CLOSE UP

VIEW OF TIMER

SWITCH

ACTUATOR

CAM

MICROSWITCH

MCM1462

April, 1993

Page 18

Содержание MCM1462

Страница 1: ...staller Location Assembly 3 Stacking 4 For the Electrician 5 For the Plumber 6 Final Check List 7 Initial Start Up 8 Freeze Cycle Operation 10 Harvest Cycle Operation 11 Component Description 12 Clean...

Страница 2: ...he MCM1462 will fit the MDB900 ice storage bin 48 wide It will double stack with kit KSMCM48 The stacking kit includes Relay box and wires to interconnect bin controls Stainless steel panel bracket to...

Страница 3: ...e the machine Do NOT push the bin into postion instead lift it there Pushing a bin may damage the legs and leg mounts Level the bin in both the front to rear and side to side directions by adjusting t...

Страница 4: ...ker The top removed from the lower icemaker will no longer have any function A stainless steel bracket from the kit must be attached to the top of the bottom machine before the units are stacked Place...

Страница 5: ...itions Low voltages can cause erratic operation and may be responsible for serious damage to the icemaker Electrical connections are made at the rear of the icemaker inside the junction box All extern...

Страница 6: ...r foot on horizontal runs The drains to be installed to conform with the local plumbing code Install a vertical open vent on drain line high point to insure good draining The ideal drain receptacle is...

Страница 7: ...tor plates 7 Have all electrical water and drain connections been made 8 Is the water supply line shut off valve installed and electrical wiring properly connected 9 Check all refrigerant lines and co...

Страница 8: ...ll close the water inlet solenoid valve and the water fill cycle is complete If the sump is not full rotate the timer once again to repeat the harvest cycle The water pump should be pumping water thro...

Страница 9: ...the icemaker in the harvest cycle place something directly below the transducer socket The machine should switch off at the END OF THE HARVEST CYCLE Within seconds after removal of the obstruction th...

Страница 10: ...CLOSED When the ice cubes are partially formed the cube size control sensing bulb attached to the suction line will CLOSE and connect power to the timer motor The timer then controls the remainder of...

Страница 11: ...te by the warming effect of the hot gas condensing in each evaporator plate and the water cascading over the ice cubes The released ice cubes drop into the ice storage bin below At the end of the harv...

Страница 12: ...ch harvest cycle and prevents short cycling on the bin thermostat control Timer Timer Switch Assembly The timer cam is controlled by the cube size control The outer surface or large diameter lobe of t...

Страница 13: ...When set at FULL it will not allow the machine to fill the bin any closer to the ice machine than about 8 and it will not work if the distance to the bottom of the bin is greater than 8 feet Because i...

Страница 14: ...ates Gravity flow returns the unfrozen excess portion of water to the sump reservoir for recirculation Hot Gas Solenoid Valve The hot gas solenoid valve opens only during the harvest cycle to divert t...

Страница 15: ...the reservoir drain cap and drain the cleaning solution from the sump Replace the drain cap 12 Rotate the shaft of the timer and switch assembly CLOCKWISE to the harvest position low part of the cam a...

Страница 16: ...After all the scale has been removed rinse all of the surfaces inside the bin with clean potable water To sanitize the bin and ice machine interior Use an approved sanitizer and follow the directions...

Страница 17: ...rect ice cube size is achieved To produce SMALLER sized ice cubes 1 Locate the cube size control on the front of the control box 2 Rotate the adjusting knob one eighth of a turn COUNTER Clockwise 3 Ob...

Страница 18: ...e cube size control Rotating the shaft of the timer cam clockwise will allow putting the machine into either the freezing cycle or harvest cycle as required in the cleaning instructions To Adjust The...

Страница 19: ...of the ice machine 1 2 22 from the base of the ice machine 1 4 30 from the base of the ice machine CHARACTERISTICS This machine uses R22 AIR COOLED Freeze cycle Average Discharge Pressure at 900 700...

Страница 20: ...intake temperature too high air cooled Reduce room temperature Sump covers out of position Re position sump covers Cubes too small Adjust cube size Cube size control stuck open Replace cube size contr...

Страница 21: ...tem Purge system evacuate and weigh in nameplate charge Poor air circulation or extreme hot location Relocate the cabinet or provide ventilation Overcharge of refrigerant Evacuate and weigh in namepla...

Страница 22: ...circuit by attaching a jumper wire between bin thermostat posts on circuit board part no 12 1912 01 the circuit board with the timer on it Reconnect power If machine does not start go back to machine...

Страница 23: ...attachment for the left water distributor tube and notch also that the distributor manifold connections at the top center of each evaporator plate is snug against the top of the plate Cube Size Contr...

Страница 24: ...F water supply to machine 2 Loosen and remove outlet water line from the inlet water solenoid valve assembly 3 Remove screws and pull the water solenoid valve out to gain access 4 Pull electrical cord...

Страница 25: ...important on an ice machine than is the high side If gauges must be used use very short hoses Minimal refrigerant discharged into the hoses equals minimal refrigerant discharged into the air If hi sid...

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