Operating Procedures; Prior To Starting; Starting The Compressor; Stopping The Compressor - Quincy Compressor QMA Series Instruction Manual

SECTION IV- OPERATING
PROCEDURES
*Prior to starting
*Starting the Compressor
*Stopping the Compressor - Normal Operation
*Stopping the compressor - Emergency Operation
Prior to Starting
.
.
.
....
.
.
.
.
Before starting the unit, review Sections II and III of
this manual and be certain that all installation
requirements have been met and that the purpose and
use of each of the controls, warnings and gauges are
thoroughly understood. The following check list must
be adhered to before placing the compressor into
operation:
Remove all loose pieces and tools around the
compressor installation.
Check fluid level in the air/fluid reservoir.
Lubrication Section IV.
Check fan and fan mounting tightness.
See
Manually rotate compressor through enough
revolutions to be certain there is no mechanical
interference.
Check all pressure connections for tightness.
Check to make sure all safety relief valves are
in place.
Check to make sure all panels and guards are in
place and securely mounted.
. Check fuses, circuit breakers and thermal overloads
for proper size.
. Open all manual shut-off valves (block valves) beyond
the air/fluid reservoir.
Check air filter element to see that it is securely
mounted.
After all the above conditions have been satisfied,
close the main power disconnect switch, jog the
starter switch button to check the rotational
direction of the compressor. QMA 50/50H/60 & 75
s.
compressors must rotate counter clockwise when
facing the compressor from the shaft end. QMA
100/125 & 150 compressors will rotate clockwise.
.
Cheek the cooling fan rotation. Air must exit upward
through the cooler.
Water-cooled models - Cheek inlet and discharge
water piping for proper eormections. NOTE: The
water temperature regulating valve is located in the
discharge water line.
Starting the Comtwessor
Open the service valve to the plant air distribution
.
.
.
.
system.
Select the mode of operation and start the compressor.
Watch for excessive vibration, unusual noises, and/or
air/fluid leaks. If anything unusual develops, stop the
compressor immediately and correct the condition.
Control settings have been adjusted at the factory,
however, they should be checked during start-up
and readjusted if neeessary. Some applications may
require a slightly different setting than those provided
by the factory. Refer to the Service Adjustment
Section VII. Never increase air pressure settings
beyond factory specifications.
Adjust the water temperature regulating valve to
—
m%ain 180!F discharge air temperature
(water-cooled units only).
"Observe the compressor operation closely for the first
hour of operation and frequently the next seven
hours. Stop and correct any noted problems.
Stomimz the Compressor-Normal
Cberation
Close the service valve to the plant air distribution
system.
Allow pressure to buiId within the air/fluid reservoir
and the compressor to filly unload.
Press the stop button.
NOTE: It is always a good practice to close the
service valve when the compressor is not being used.
It will prevent the system's air pressure from Ieakhg
back into the air/fluid reservoir if the check valve
leaks or fails.
Stoouing the Comwessor-Emergency
.
Press the emergency stop button or break the power at
the main switch or disconnect panel.
43