R-Series Electric
16
CQF3473 v.01
Operation & Service
April 17, 2018
Low Oil Shutdown Control
(optional equipment)
The oil monitor must be used in conjunction with a magnetic starter (see wiring diagram for details).
The oil monitor is installed on the outside of the air compressor crankcase with a port that allows oil
to feed into it’s float bowl chamber and maintain the same level as in the crankcase. The float moves
vertically up or down as the oil level changes. If the oil level is below minimum allowable operating
level, the reed switch will open, thus stopping the motor. A magnet holds the float and prevents the
compressor from starting. In order to start the compressor the following steps must be taken:
1. Fill crankcase to recommended capacity as indicated when level reaches the middle of the oil
sight glass.
2. Turn cam reset knob 90° clockwise.
IMPORTANT NOTE: The Oil Monitor does not eliminate the compressor owner's responsibility for
periodically checking oil level. Refer to maintenance instructions.
WIRING DIAGRAM: The oil monitor is wired into the control panel as shown below. Refer to the
Control Panel User Manual for complete wiring diagrams.
C509-A
(Ref. Drawing)
Remove jumper between 5 & 6
343CAS546
(Ref. Drawing)
