Vogt HEC-10, Service Manual

Page: 43 / 114

HEC-Series Service Manual
INITIAL START-UP AND OPERATION
10/21/01
5-2
If the machine does not start, put the “Ice” button in the “Off” position. Put the “Clean” button in the
“On” position and push the “Start” button. This will put the machine in the clean mode and tell the
PLC that the machine is pumped down. Now put the “Clean” button in the “Off” position, shutting
off the water pump, and the “Ice” button in the “On” position. When the “Start” button is pushed,
the “A” valve will open and feed liquid for 2 minutes then go to the freeze cycle.
Note: Be sure to check compressor rotation of machines with scroll compressor.
Suction pressure must decrease and discharge pressure increase immediately. To change rotation,
reverse two (2) of the three (3) compressor wires L1, L2, and L3 at the control panel terminal block.
FIGURE 5-1
Solenoid Valves
_____ 12. When the machine starts, check water level in water pan (7) to determine whether or
not water pump (6) is pumping water. It may be necessary to stop and start the
machine several times to expel air from the water pump impeller housing.
Note: Use one of the circuit breakers, “Cutter” or “Pump” to stop--for approximately 10 seconds--
and start button to start the machine, if necessary to prime the pump.
! CAUTION !
If it should ever become necessary to add refrigerant to the
system, charging valve (28) is provided for this purpose.
Be sure to follow all local and federal regulations regarding
the handling of refrigerants and their illegal emission into
the atmosphere.
! CAUTION !