M
MAN-2V3B-4.1V REV (C)
4
CHAPTER 3 - START-UP AND OPERATING PARAMETERS
WARNING
Follow all safety precautions stated in the first section of this manual.
3.1
SYSTEM CHECKOUT:
Check that crankcase oil level is ¾ up the sight glass and inspect
for water or other foreign material.
Insure that a free flow of gas is available to the compressor inlet and that the high pressure discharge
line is unobstructed. It is essential that an approved safety relief valve and pressure gauge are installed
between the compressor and the first item in the gas piping that can potentially block the flow of gas.
Do not start the compressor until these items are properly installed.
3.2
START-UP:
Supply the required suction pressure to the compressor inlet. Check for leaks in
the system and correct as necessary.
Start the compressor and observe the pressure gauges. The final pressure will increase quickly to the
Back Pressure Regulator (BPR) setting. The interstage pressures should approach their normal level as
the final stage comes up to its final setting. See paragraph 3.3 for normal operating pressures. Note: due
to the floating high pressure piston the unit may experience light knocking for 1-2 seconds on start-up.
If interstage pressures do not reach normal levels check for leaks in the gas piping. A soapy water
solution is one way to do this (see paragraph 5.8). If interstage pressures exceed normal levels (which
may pop relief valves) this is due to valves on the next stage leaking back. Leaking valves may be the
result of inactivity in which case operating the unit at reduced back pressure (or at back pressure valve
setting) for 30 minutes may clear the problem. Also see troubleshooting guide.
If the compressor does not shut off when the discharge switch set pressure is reached, manually shut
down and check the switch and related wiring (see switch instructions near end of manual). If
necessary, adjust the switch. When working correctly, the compressor should automatically restart when
discharge pressure drops to the "on" pressure setting (automatic mode only).
Test the suction pressure switch by manually lowering the pressure to the compressor inlet. If the
compressor does not shut off when the switch set pressure is reached, manually shut down and check the
switch and related wiring. Operating the compressor with inadequate suction pressure may overheat the
final stage and/or cause banging of floating piston creating the potential for severe damage. When
working correctly the compressor should automatically restart when the suction pressure rises back to
the "on" pressure setting (automatic mode only).
Test temperature shutdown switch by manually lowering setting while operating at full pressure.
SEE CHAPTER 4 FOR CONTROL SYSTEM INFORMATION
Summary of Contents for RIX 2V3B-4.1V Series
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