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QUALITROL AKM345 GEN3 OTIWTI
40-08847-00-Rev001
6.2 Adjustable Differential (option)
An option on the AKM345 GEN3 is to have adjustable switching differentials.
The procedure for adjusting the switching differential is as follows:
Step 1)
Adjust the alarm set point as described above.
Step 2)
Adjust the multi-turn adjusting screw located beneath the switch scale plate fully clockwise. At this
point the differential will be set at 5°C. (When turned fully counterclockwise the differential is set at
25°C).
Step 3)
Pull down the test lever (located on the right-hand side of the switch stack) slowly to verify correct
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.
NOTE: never force the test lever upwards
Step 4)
Fine-tune the differential setting by gradually turning the adjusting screw.
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Instruction Manual
Page 24 of 34
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