Section 5
OPERATION
44
5.3 INITIAL START-UP PROCEDURE
The following procedure is used to make the initial
start-up of the machine:
1. Read the preceding pages of this manual thor-
oughly.
2. Be sure that all preparations and check
described in the Installation Section have been
made.
3. Crack open the shut-off valve to the system.
4. Start the machine by pushing the START button.
5. Check for possible leaks in piping.
6. Slowly close the shut-off valve and check that the
vacuum regulator is set correctly. If set correctly,
the machine will unload at the desired system
vacuum. If adjustments are necessary, see
Control System Adjustments in the Maintenance
Section of this manual.
7. Open shut-off valve to service line.
8. Observe the operating temperature. If the oper-
ating temperature exceeds 200ºF (93ºC), your
cooling system or installation environment
should be checked.
9. Observe return line sight glass(es) and mainte-
nance gauges.
10. Reinspect the machine for temperature and
leaks the following day.
5.4 SUBSEQUENT START-UP PROCEDURE
For subsequent start-ups, check that the proper
level is visible in the fluid level sight glass and press
the START button. When the machine is running,
observe the instrument panel and maintenance
gauges.
5.5 SHUTDOWN PROCEDURE
To shut the machine down, press the STOP button.
5.2 PURPOSE OF CONTROLS (CONTINUED)
CONTROL OR INDICATOR PURPOSE
INLET CHECK VALVE Cuts off the reverse flow of gas/fluid mixture
through the vacuum unit inlet at shutdown.
THERMAL VALVE
(air-cooled only)
Regulates flow of fluid to and around the cooler. It
is designed to maintain a minimum operating tem-
perature of 180ºF (82ºC); used for fast warm-up
on start-up.
FLUID PRESSURE REGULATOR Maintains an adequate lubricating fluid pressure
of approximately 20 psi (138kPa) at the vacuum
unit.
DISCHARGE TEMPERATURE SWITCH Shuts the machine down when the vacuum unit
discharge temperature exceeds 240ºF (116ºC).
HIGH PRESSURE SHUTDOWN SWITCH Designed to shut down the machine when the dis-
charge pressure becomes too high. This switch is
set for shutdown at approximately 12 psi (83kPa).
SULLICON CONTROL Regulates the amount of gas allowed to enter the
inlet valve. This regulation is determined by the
amount of gas being admitted to the system.
VACUUM REGULATOR Opens an atmospheric pressure line to the
Sullicon Control allowing the Sullicon Control to
regulate system vacuum according to demand.
WATER REGULATING VALVE
(water-cooled only)
Regulates the amount of cooling water used in
the cooler to keep the machine running at a nor-
mal operating temperature of 180ºF (82ºC).
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