Section 5
OPERATION- ELECTRO-MECHANICAL
27
5.2 PURPOSE OF CONTROLS--STANDARD ELECTRO-MECHANICAL (CONTINUED)
CONTROL OR INDICATOR PURPOSE
T2 (BYPASS TIMER) Adjustable from zero (0) to 16 seconds. Used to by--
pass the water pressure switch on startup. Set to zero (0)
for no function. Located on rear of controller.
T3 (STAR--DELTA TIMER) Adjustable from zero (0) to 16 seconds. Transition timer
for Wye--delta start. Located on rear of controller.
SW1 (POWER FAILURE RESTART With switch set to ON, machine will start after power re--
ON/OFF CONTROL covery in the run mode selected prior to power failure as
long as start permissives allow. Located on rear of con--
troller.
5.3 INITIAL START--UP PROCEDURE-- STANDARD
ELECTRO-MECHANICAL
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.
4. Start the compressor by pressing the START “
I
”
pad.
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 nec-
essary, see Control System Adjustment in the
Maintenance Section 7.7 of the main manual.
7. Observe the operating temperature. If the operat-
ing temperature exceeds 205_F(96_C), 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.
5.4 SUBSEQUENT START--UP PROCEDURE--
STANDARD ELECTRO-MECHANICAL
On subsequent start--ups, check that fluid level is
visible in the fluid sight glass and simply press the
START pad. When the compressor is running, ob-
serve the instrument panel and maintenance indica-
tors.
5.5 SHUTDOWN PROCEDURE-- STANDARD ELEC-
TRO-MECHANICAL
To shut the compressor down, simply press the
STOP “
O
” pad.
To Next Page
Loading...
Need help?
General
