Vogt HE S Series, Installation & Start-Up Instructions

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Installation & Start-up – HES Series
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6. _____ Open the hand stop valve (90B) in the thawing gas at the inlet to the evaporator. After fully
opening the valve, make 1/2 turn to the closed position to open the port to the freezer pressure
switch.
IMPORTANT – The machine will not operate if this valve is not set properly.
7. _____ CHECK TO SEE that the charging valve (28) is the only stop valve in the various refrigerant
lines in the closed position.
! NOTE !
All valves are tagged with instructions.
! NOTE !
8. _____ Immediately after opening all tagged valves, entire machine should be checked for refrigerant
leaks with electronic leak detector. Flare fittings may work loose during shipment and valve packing
may leak after opening.
! WARNING !
The warranty does not cover leaks of this type after the initial start-up of the unit.
! WARNING !
9. _____ Close exterior disconnect switch to energize crankcase heater and power the PLC.
! CAUTION !
The crankcase heater should be energized for a MINIMUM of
2 HOURS before attempting to operate the compressor.
! CAUTION !
10. _____ Prime the water pump using the following procedure: Connect a suction gage to low-
pressure test connection and a high-pressure gage to the high-pressure test connection. After the
crankcase heater has been energized for
TWO HOURS , remove the control panel cover and locate
the control circuit breakers to the left of the PLC (see FIGURE-19). Move the selector switch to the
“Clean” position and push the “Harvest/Start” switch. The water pump should start, however, do not
be alarmed if pressure in the evaporator causes the compressor to start also. If the compressor starts,
check the compressor rotation. If the compressor is turning in the wrong rotation,
immediately stop
the machine using the control circuit breaker and correct wiring as outlined in step 11 . Prime
the water pump by using the control circuit breaker to start and stop the pump motor.
FIGURE - 19
Circuit Breakers
PLC
CB1 CB2 CB3/CB4
HARVEST TIMER
(BEHIND ACCESS DOOR – TOP SCREW)
CONDENSER FAN MOTOR BREAKER
(
AIR COOLED ONLY)
PUMP / CUTTER
BREAKER
CONTROL CIRCUIT
BREAKER