Table of Contents
Advertisement
Section 4
OPERATION
4.2 PURPOSE OF CONTROLS (CONTINUED)
CONTROL OR INDICATOR
MINIMUM PRESSURE/CHECK VALVE
COMPRESSOR DISCHARGE
TEMPERATURE SWITCH
HIGH PRESSURE SHUTDOWN SWITCH
PRESSURE RELIEF VALVE
LINE CHECK VALVE
SULLICON CONTROL
PRESSURE REGULATOR
PRESSURE SWITCH
BLOWDOWN VALVE
WATER REGULATING VALVE
(water-cooled only)
4.3 INITIAL START-UP PROCEDURE
The following procedure should be 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 checks de-
scribed in the Installation Section have been
made.
3. Crack open the shut off valve to the service line.
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
setting on the pressure switch is set correctly. If
set correctly, the machine will unload at the de-
sired unload pressure. If adjustments are nec-
essary, see Control System Adjustments in the
Maintenance Section of the manual.
14
PURPOSE
Maintains minimum of 40 PSI in the compressor
sump. Valve piston restricts receiver air discharge
from the receiver/sump when pressure falls to 40 PSI.
Opens the electrical circuit to shut down the machine
when the discharge temperature reaches 240_F
(115_C).
An added feature designed to shut down the machine
when the pressure becomes too high. This switch is
set for shutdown at approximately 135 PSI.
Opens sump pressure to the atmosphere should
pressure inside the sump become too high (140 PSI ).
Operation of this valve indicates that the high pres-
sure switch is either faulty or out of adjustment.
Prevents line pressure backflow into the sump during
unload conditions and after shutdown.
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.
Opens a pressure line between the sump and Sul-
licon Control allowing the Sullicon Control to regulate
air delivery according to the air demand.
Senses service line pressure. When line pressure
reaches maximum setting the pressure switch sig-
nals the control valves to unload the machine.
Vents sump pressure to the atmosphere during un-
load conditions and shutdown.
Regulates the amount of cooling water used in the
cooler to keep the compressor running at a normal
operating temperature.
7. Observe the operating temperature. If the oper-
ating temperature exceeds 210_F, the cooling
system or installation environment should be
checked.
8. Observe return line sight glass and maintenance
indicators.
9. Open shut-off valve to service line.
10. Reinspect the compressor for temperature and
leaks the following day.
4.4 SUBSEQUENT START-UP PROCEDURE
On subsequent start-ups, check that the proper
level is visible in the fluid sight glass and simply
press the START button. When the compressor is
running, observe the instrument panel and main-
tenance indicators.
4.5 SHUTDOWN PROCEDURE
To shut the machine down, simply press the STOP
button.
Advertisement
Table of Contents
