Perlick PKHT24, Руководство по установке и эксплуатации, Страница: 5 / 20

Commercial Glasswasher Installation & Operation Manual
Printed in USA 5
OPERATIONAL CYCLE
The PKHT24 operational cycle has a total cycle time of 2 minutes (120 seconds). The Timing Diagram
and the steps listed below detail the individual functions that are executed during each operational
cycle.
1. With the machine powered up, toggling the START switch begins a cycle.
a) Toggling the START switch energizes both the Cam Timer motor and the Instant Start Relay. The
Instant Start Relay latches ON the power to the Cam Timer motor so that the START switch can be
released a moment after it has been toggled without the Cam Timer motor losing power.
b) After about 1.5 seconds the Cam Timer’s fi rst cam — the Cam Timer Motor Cam — latches ON
the power to the Cam Timer motor and drops out the Instant Start Relay. The Cam Timer motor
continues to run for a total of 2 minutes, at which time it switches OFF — resetting the Cam Timer —
and waits for the next START command.
2. The Cam Timer’s third cam controls the Wash Pump. The Wash Pump comes ON about 3 seconds
into the Operational Cycle and continues to run for 94 seconds. This 94-second period is the Wash
Cycle.
3. At the same time that the Wash Pump comes ON the Cam Timer’s fourth cam powers ON the
Optional Drain Pump — if one is present — and keeps it running for about 7 seconds before powering
OFF. This cam turns ON again midway through the Rinse Cycle and stays ON for 10 seconds, turning
OFF 2 seconds after the Rinse Cycle has completed.
4. About 3 seconds after the Wash Cycle has completed the Cam Timer’s second cam, which
controls the Rinse Cycle, turns ON — energizing the Water Solenoid — and stays ON for 16 seconds.
This 16-second period is the Rinse Cycle.
5. When the Cam Timer assembly approaches the fi nal rinse portion of the cycle, the “Safe-T-Temp”
sixth micro switch will pause Cam Timer assembly if the booster heater has not reached 180 degrees.
The machine will remain in wash cycle mode until 180-degree rinse temperature is reached, and at
this time the Cam Timer will advance automatically into the rinse cycle and dispense 180 degrees rinse
water over the dishes.