Quantcast Startup Procedure for Motor-Driven Compressors

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3.2 Startup Procedure for Motor-Driven Compressors. Proceed as follows:
(a) Open all shutoff valves between compressor and receiver.
(b) Make sure compressor is unloaded. Consult the manufacturer's
instructions for procedure.
(c) Turn on cooling water, if provided. Thoroughly vent cylinder
jackets and coolers if vents are provided.
(d) Turn compressor over by hand to see that all parts are free.
(e) Start compressor motor.
When up to speed, apply load if machine is
running smoothly.
3.3 Startup Procedure for Steam-Driven Reciprocating Compressors. Proceed as
follows:
(a) Open all shutoff valves between compressor and receiver.
(b) Turn on cooling water services ensuring cylinder jackets and coolers
are thoroughly vented.
(c) Make sure compressor is unloaded by opening the separator drain
valve or the compressor cylinder indicator cocks.
(d) Open valve chest, exhaust, and steam cylinder drain valves.
(e) Open the drain valve on the steam admission line above the throttle
valve.  When all condensation has drained from the line and the pipe is hot,
close the drain valve until it is open approximately one-fourth of a turn.
(f) Crack open the throttle valve and allow the steam cylinder to warm
up.
(g) Open steam exhaust valve.
(h) Slowly open the throttle valve and allow the governor to take over
control.
(i) Close the drain valves when steam discharge is free of condensate.
(j) When the compressor is up to speed, slowly build up the load.
3.4 Startup Procedure for New or Overhauled Compressors. When starting a new
compressor, or one that has been overhauled, allow the compressor to run
unloaded for 1 or 2 hours to give the running surfaces a polished finish.
Periodically check for overheating.  Build up load gradually over a period of
several hours. After a few days of operation, shut down compressor and
recheck all cylinder head, valve cover, cylinder flange, shaft cover, and
foundation bolts for tightness.
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