Initial Start-Up Procedure; Subsequent Start-Up Procedure - Sullair LS20 Operator's Manual And Parts List

8.2 PURPOSE OF CONTROLS- ELECTRO-MECHANICAL (CONTINUED)
CONTROL OR INDICATOR
PRESSURE SWITCH
BLOWDOWN VALVE

8.3 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
described in the Installation
Section have been made.
3. Crack open the shut off valve to the service line.
4. Start the compressor by pushing the START but-
ton.
Motor rotation check must have been checked.
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 compressor will unload at the
desired unload pressure. If adjustments are
necessary, see Control System Adjustment
OPERATION- ELECTRO-MECHANICAL
PURPOSE
pressure. Also activates blow-down valve.
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 unload condi-
tions and shutdown.
the Maintenance Section 10.8 of this manual.
7. Observe the operating temperature. If the oper-
ating temperature exceeds 205ºF (96ºC), 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.

8.4 SUBSEQUENT START-UP PROCEDURE

On subsequent start-ups, check that fluid level is
visible in the fluid sight glass (refer to Section 4.5)
and simply press the START button. When the
compressor is running, observe the instrument
panel and maintenance indicators.
8.5 SHUTDOWN PROCEDURE
To shut the compressor down, simply press the
STOP pad.
in
Section 8
43