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Section IV - Operating Procedures
22 Quincy Compressor
®
- QSD™
• Prior to Starting
• Starting the Compressor
• Stopping the Compressor - Normal
Operation
• Stopping the Compressor - Emergency
Prior to Starting
Provisions should be made to have the instruction
manual readily available to the operator and
maintenance personnel. If the manual becomes
illegible or lost, have it replaced immediately. The
instruction manual should be read periodically
to prevent a serious accident.
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 and all warnings are thoroughly understood.
Adhere to the following checklist before placing the
compressor into operation:
• Remove all loose items and tools from around the
compressor.
• Check fluid level in the gearbox.
• Check the fan and fan mounting for tightness.
• Manually rotate the compressor through enough
revolutions to be certain there is no mechanical
interference.
• Ensure that all pressure relief valves are in place and
properly sized.
• Make sure all panels and guards are in place and
securely mounted.
• Check fuses, circuit breakers and thermal overloads
for proper size.
• After all the above conditions have been satisfied
close the main power disconnect switch, jog the
starter switch button to check the rotation of the
compressor
• Install the coupling guard.
• Check the fan rotation (air should push outward
through the enclosure).
• Check inlet and discharge water piping for proper
connections, adequate supply and open drain.
!
CAUTION
NOTE
When freezing temperatures are expected before
the next start-up, drain all cooling water as
follows:
• Drain inlet and outlet water lines at the cabinet
connections.
• Remove drain plugs from fluid cooler and stage
one water jacket tube.
• Inject compressed air at 15-20 psig into the system
to remove the remaining coolant.
Starting the Compressor
• Secure all enclosure panels on compressor.
• Select the mode of operation and start the
compressor.
• Watch for excessive vibration, unusual noises, 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 necessary. Some applications may
require a slightly different setting than those
provided by the factory (never increase pressure
settings beyond factory specifications). Refer to
Section VII - Service Adjustments.
• Observe compressor operation closely for the first
hour of operation and frequently for the next seven
hours. Stop and correct any noted problems.
NOTE
If the unit fails to start consult Section IX -
Troubleshooting. Do not adjust the unload
pressure more than 5 PSIG beyond the full load
pressure rating of the machine.
Stopping the Compressor - Normal Operation
Press the shutdown button on the keypad below the main
display.
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
leaking back into the compressor if the check
valve leaks or fails.