Pressure Switches
Inspection / Adjust
A5.05. 11.01.02.01
3750
M20-M601C
en / 31.05.2000 IB021686 2/3
11
Ĺ
Attention:
When loosen/thighten the union nut directly located at the pressure joint of the pressure
switch, it should be simultaneously counter acted at the key faces of the pressure joint.
1.3 Connect the hose (with union nut and cutting) with the adjusting device (Fig. 2).
2. Inspection of the set values
2.1 Ventilate the pressure switch via the adjustment device.
Attention:
For setting the differential pressure switch, the adjusting device must be equipped with
two text connections (+, –, pressure difference) refer to view “X”.
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 instrument. Inspect the displayed switch difference.
Fig. 2
YX
Pressure monitor
Difference pressure monitor
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