HEC-Series Service Manual
ELECTRICAL CONTROLS & THEIR FUNCTIONS
10/21/01
6-10
1. Set the “Ice Selector” switch to the position desired.
2. See that the “Clean” switch is in the “Off” position.
3. Push the “Ice” button to the “On” position.
4. Push the “Start” button. (Make sure the compressor crankcase is warm and there is no liquid
refrigerant in with the oil before pushing the “Start” button.)
At this time the “A” (liquid feed) solenoid valve will open for two minutes, allowing the freezer
pressure to raise to the cut-in setting of the low pressure switch. Then the machine will start in a
freeze cycle.
Clean Mode.
The “Clean” mode is considered to be a maintenance or servicing function of the
machine. It should only be initiated when the freezer is clear of ice.
The first phase of the “Clean” mode is a total pumpdown.
! CAUTION !
Do not attempt to bypass the total pumpdown phase of the “Clean” mode. If a clean cycle is
performed without first completing a total pumpdown, the warm water being circulated
through the freezer tubes can force refrigerant to migrate to the suction accumulator and
compressor. This could create an unfavorable condition and possible cause damage to the
compressor when returning to the freeze mode.
! CAUTION !
After the total pumpdown and pushing the “Start” button, the water pump can be started and stopped
by simply pushing the “Clean” button on and off. (Note: If the freezer and compressor suction
pressure have come up enough to open the freezer pressure switch FPS2 and close low pressure
safety switch 4PS, the compressor will come and on and pump down the freezer again.) Ice machine
cleaning solution can be circulated though the tubes to accomplish the cleaning procedure. If the
water pump is left to run in the clean mode. The clean mode can be resumed by pushing the “Start”
button.
At the termination of the clean mode, the machine can be returned to ice making mode by pushing the
“Clean” button to the “Off” position; the “Ice” button to the “On” position; and the “Start” button.
See “Maintenance--Ice Making”, Section 7, for complete cleaning procedure.
Troubleshoot Mode.
If the machine has stopped due to a “fault” during normal operation, a
troubleshoot mode can be used to identify this “fault”. This mode can be entered from a start-up or
standby mode.
To enter the troubleshoot mode, the SVI (service indicator) switch located inside the control panel
(FIGURE 6-1) must be opened. This will disable the machine and its components.
Summary of Contents for HEC-10
Page 1: ...HEC SERVICE MANUAL ...
Page 95: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 13 FIGURE 9 9 Cutter Water Tank Parts ...
Page 96: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 14 FIGURE 9 10 Cutter Drive Parts ...
Page 97: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 15 FIGURE 9 11 Cutter Parts ...
Page 106: ...HEC Series Service Manual MODEL NUMBER STRUCTURE 10 21 01 10 1 10 Model Number Structure ...
