Varec 2920, Installation And Operation Manual, Page: 133 / 194

11 Configuration & Calibration — Level, Limits, and Outputs
Varec, Inc. 123
4. Turn the cam until the switch activates with an audible click.
5. Gently turn the encoder shaft back and forth to verify that the switch is operating properly.
6. Twist the adjustable cams relative to each other to adjust the length of the dwell (the dura-
tion of the alarm).
Note Care should be taken to avoid having too much dwell that will cause the low alarm
to sound at the high levels and vice versa.
Field Adjustment Knob
Drive Shaft Coupling
ADJUSTABLE ALARM
DWELL TIME
ALARM ON
ALARM OFF
FIELD ADJUSTMENT KNOB
NORMALLY CLOSED (NC2)
COMMON (COM)
CONNECTOR
(UNUSED)
CONNECTOR
NORMALLY OPEN (NO3)
CONNECTOR
LIMIT SWITCH
Dial Indicator
Field Adjustment Knob
(Far Side)
Limit Switch Cam
Limit Switch