Vogt HEC-10, Service Manual

Page: 42 / 114

HEC-Series Service Manual
INITIAL START UP AND OPERATION
10/21/01
5-1
5. Initial Start-Up & Operation
Start-Up Checklist
Be sure to complete and return the Warranty Registration/Start-Up report located at the front
of the manual.
In order to prepare the machine for start-up, it will be necessary to remove the front panels for access
to the various valves and for observation.
_____ 1. See that water-inlet connections are attached to the proper couplings (water cooled
units) and to water for ice making. The inlet shutoff valves should be open. The
water level in the water pan should be at a height where the make-up water float valve
will be closed when the machine is idle.
_____ 2. See that the cutter motor gear reducer is lubricated (see “Lubrication” for
instructions).
_____ 3. See that compressor crankcase oil level is at proper height of 1/4 to 3/4 of the sight
glass. (no sight glass on Carlyle scroll compressor.)
_____ 4. See that “Cutter” and “Pump” circuit breakers are in the “On” position.
_____ 5. See that the “Ice” push button switch is in the “Off” position (Button Out).
_____ 6. See that the “Clean” push button switch is set to “Off” position (Button Out).
NOTE: All valves are tagged with instructions.
_____ 7. Open compressor service valves (34 and 35), the two hand-stop valves (90) in the
thawing gas line, (91) in the condenser return line, and the hand-stop valve (58) in the
liquid line and hand-stop valve (69) to the freezer pressure switch. These valves are
tagged to indicate that they were closed for shipping purposes.
_____ 8. IMPORTANT! CHECK TO SEE that all stop valves in the various refrigerant lines
are open except charging valve (28), according to the attached tags.
_____ 9. Immediately after opening all valves, entire machine should be checked for
refrigerant leaks with electronic leak detector.
_____ 10. 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 !
_____ 11. Connect a suction gage to the low pressure test connection and a high pressure gage
to the high pressure test connection. After TWO HOURS, push the “Ice” button and
the “Start” button. The machine will not operate until the low pressure raises
sufficiently (to approximately 40 psig) to close the low pressure switch (4PS) & open
the cylinder ice freezer pressure switch (FPS2).