Initial Start-Up Procedure - Sullair 12 Series Operator's Manual

Section 5
OPERATION
5.2 PURPOSE OF CONTROLS
CONTROL OR INDICATOR
THERMAL VALVE
MINIMUM PRESSURE/CHECK VALVE
COMPRESSOR DISCHARGE
TEMPERATURE SWITCH
HIGH PRESSURE SHUTDOWN SWITCH
WATER PRESSURE SWITCH
(water---cooled compressors only)
PRESSURE RELIEF VALVE
SULLICON CONTROL
PRESSURE REGULATOR
PILOT VALVE
PRESSURE SWITCH
BLOWDOWN VALVE
WATER REGULATING VALVE
(water---cooled only)
5.3 INITIAL START-- UP PROCEDURE
The following procedure should be used to make
the initial start ---up of the compressor:
1. Read the preceding pages of this manual thor-
oughly.
2. Be sure that all preparations and checks de-
scribed in the Installation Section have been
made.
3. Crack open the shut off valve to the service line.
18
PURPOSE
Regulates flow of fluid to and around the cooler. It is de-
signed to maintain a minimum operating temperature
of 180_F (82_C); use for fast warm---up on start---up.
Maintains minimum of 55 PSIG (379kPa) in the com-
pressor sump. Valve piston restricts receiver air dis-
charge from receiver/sump when pressure falls to 55
PSIG (379kPa). Also prevents backflow into the sump
during unload conditions and after shutdown.
Designed to shut the compressor down when the
discharge temperature reaches 240_F (115_C).
An added protective device designed to shut down
the compressor when the pressure becomes too high.
This switch is set for shutdown at approximately 135
PSIG (931kPa).
It prevents operation when water pressure of
compressor is inadequate.
Opens sump pressure to the atmosphere should pres-
sure inside the sump become too high (175 PSIG
[1206kPa]). Operation of this valve indicates that the
high pressure switch is either faulty or out of adjust-
ment.
Regulates the amount of air allowed to enter the air in-
let valve. This regulation is determined by the amount
of air being used at the service line.
Allows a pressure signal to reach the engine speed
control cylinder and the air inlet valve to control air de-
livery according to demand.
Bypasses the pressure regulator valve causing the
Sullicon Control to close the inlet valve when the com-
pressor reaches maximum operating pressure.
Senses service line pressure. When line pressure
reaches maximum setting the pressure switch signals
the pilot valves to unload the compressor.
Vents sump pressure to the atmosphere during un-
load conditions and shutdown.
Regulates the amount of cooling water used to keep
the compressor running at a normal operating tem---
perature.
4. Start the compressor by pushing the START but-
ton.
5. Check for possible leaks in piping.
6. Slowly close the shut ---off valve and check that
the setting on the pressure switch is set cor-
rectly. If set correctly, the compressor will unload
at the desired unload pressure. If adjustments
are necessary, see Control System Adjustments
in the Maintenance Section of the manual.