Optional) Adjustable Switch Differential Setting Instructions; Figure 1 - Switch Setting Scale - Qualitrol AKM OTIWTI Instruction Manual

AKM 345 Gen2 Instruction Manual
Tighten the screw in this position.
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• Check that contact is obtained by slowly turning the shaft of the drum so that the
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pointer of the temperature gauge moves towards higher values on the scale. The shaft
of the drum must not be turned in the other direction since the calibration of the
instrument may change. When checking the instrument must be in a vertical position.

4.1. (Optional) Adjustable Switch Differential Setting Instructions

Adjust alarm set point as described above.
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Adjust the multi-turn adjusting screw located beneath the switch scale plate fully
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clockwise. At this point the differential will be set at 5°C. (When turned fully anti-
clockwise the differential is set at 25°C)
Pull down the brass test lever (located on the right hand side) slowly to verify correct
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alarm and differential setting. For example if the alarm is set at 50°C and the adjusting
screw is set fully anti-clockwise, the switch will energize at 50°C on rising temperature.
It will de-energize on lowering temperature at 25°C.
Never force the test lever upwards.
Fine-tune differential setting by gradually turning the adjusting screw.
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Figure 1 – Switch Setting Scale
(Rev No. ECN-27992)
Adjusting Screw
2
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