Pressure Switches
Inspection / Adjust
A5.05. 11.01.02.01
3750
M20-M601C
en / 17.12.2010 IB021686 2/3
11
1.3 Connect the hose (with union
nut and cutting) with the adju-
sting device (Fig. 2).
2. Inspection of the set values
2.1 Ventilate the pressure switch
via the adjustment device.
2.2 Inspect the pressure control via the pressure gauge (of the device) and simultaneously the switch
point at the instrument or alarm unit for coincidence of the switch point with the set value.
2.3 At any deviation correct the adjustment due to item 3.
2.4 Deaerate the pressure switch slightly and simultaneously check the switch point via the test in-
strument. Inspect the displayed switch difference.
CAUTION
When loosen/thighten the union nut directly located at the pressure joint of the pres-
sure switch, it should be simultaneously counter acted at the key faces of the pressu-
re joint.
CAUTION
For setting the differential pressure switch, the adjusting device must be equipped
with two text connections (+, –, pressure difference) refer to view “X”.
Pressure monitor
Difference pressure monitor
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