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R-Series Electric
17
CQF3473 v.01
Operation & Service
April 17, 2018
Low Oil Shutdown Control (continued)
(optional equipment)
TROUBLESHOOTING & SERVICING
Always disconnect unit from power supply and relieve all pressure from air tank before
performing any maintenance. “Lock Out” or “Tag Out” all power sources. Failure to do so
may result in personal injury or death.
NOTICE
Do not disassemble LOSC switch. Disassembly will void warranty.
No adjustments are required for the oil monitor.
If the oil monitor does not operate properly, check the items listed below to determine the cause.
1. Crankcase Oil
a. Check sight glass to insure proper oil level in crankcase, when compressor is shut off.
b. Check crankcase oil for proper viscosity. This is particularly important for temperature
conditions below 32˚F. Oil which is too thick can slow the response of the mechanism,
causing float to register a low level.
c. Change oil regularly. Clean oil insures proper operation of the Oil Monitor, as well as
compressor. See Compressor Oil Specification and Maintenance sections for details.
2. Vent Tube
a. Check vent tube to insure it is not clogged.
b. Check the gasket between valve body and bowl for leaks. This will cause a pressure rise in
the crankcase which will give a false safe oil level indication.
c. Check the fittings at ends of vent tube for tightness and leaks.
3. Reset
a. Check that reset return spring is in proper working order.
b. Verify that reset knob is in fully counterclockwise position.