Initial Start-Up Procedure; Subsequent Start-Up Procedure; Shutdown Procedure - Sullair LS20TS Operator's Manual And Parts List

Section 6
OPERATION
6.2 PURPOSE OF CONTROLS (CONTINUED)
CONTROL OR INDICATION
PRESSURE REGULATOR (REFER-
ENCE)
DOWNSTREAM INLET PRESSURE
REGULATOR
STARTUP SOLENOID VALVE
BLOWDOWN SOLENOID VALVE
BLOWDOWN VALVE
EMERGENCY STOP SWITCH

6.3 INITIAL START-UP PROCEDURE

Do Not attempt to start compressor more than
once over a period of thirty minutes.
The following procedure should be used to make
the initial start-up of the compressor.
1. Be sure that all preparations and checks
described in the Installation Section have been
made.
2. Read the preceding pages of this manual thor-
oughly.
3. Jog motor to check for correct rotation of fan
(refer to Section 4.7).
4. Start the compressor in the desired operating
mode or
5. Slowly open the shut-off valve to the service line.
6. Check for possible leaks in piping.
7. Slowly close the shut-off valve to assure proper
nameplate pressure unload setting is correct.
The compressor will unload at nameplate pres-
sure. If adjustments are necessary, consult
Differential Pressure Regulator Adjustment
28
Opens a pressure line between the sump and the inlet poppet
valve after initial startup. This pressure overcomes the internal
spring load, allowing the inlet poppet valve the ability to modulate
as required by the service line.
Maintains a supply pressure of 100 psi (6.9 bar) to inlet control
valve during modulation modes (protects the inlet control valve).
Assures no flow to the reference regulator during startup for
approximately 7-seconds. After the timer times out, this valve
opens to allow air to flow to the reference pressure regulator.
Opens when a demand for an unload/shutdown condition
exists. When valve is opened, it will supply air to the blow-down
valve.
Vents sump pressure to the atmosphere during unload/shutdown
conditions.
Pushing in this switch, found adjacent to the Supervisor, cuts all
AC outputs from the latter and de-energizes the starter. A fault
message (E STOP) is displayed by the Supervisor until the button
is pulled out and the "
.
PURPOSE
" pad is depressed.
Section 7( Maintenance) of this manual.
8. Observe the operating temperature. Refer to
compressor operator's manual for acceptable
operating range. If temperature exceeds this
range, the cooling system and installation envi-
ronment should be checked.
9. Open shut-off valve to the service line.
10. Reinspect the compressor for temperature and
leaks the following day.

6.4 SUBSEQUENT START-UP PROCEDURE

Do Not attempt to start compressor more than
once over a period of thirty minutes.
On subsequent start-ups, check that the proper
level is visible in the fluid sight glass and simply
press the START
When the compressor is running, observe the
instrument panel and maintenance indicators.

6.5 SHUTDOWN PROCEDURE

To shut the compressor down, simply press the
STOP
in
or AUTO MODE
button.
button.