Replacement Of Maintaining Contact; Tools Required; Spare Parts Required; Procedure - ABB UZE Repair Manual

3 Repairs and adjustments

3.5 Replacement of maintaining contact

3.5.1 Tools required

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3.5.2 Spare parts required

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3.5.3 Procedure

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The lever with the roller inside the mechanism should be horizontal. Check before dismount-
ing the old switch.

3.6 Replacement of pressure relay

3.6.1 General

If the pressure relay fails to pass the insulation test and/or the function test (section 2.2), the
pressure relay has to be replaced.
It is not permissible to replace only the microswitch inside the pressure relay.
3.6.2 Tools required
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Normal set of screwdrivers
Electric drill
Drill Ø 3 mm
Hammer
Drift Ø 2.5 mm
Maintaining contact (No. 6 according to Circuit diagram)
Roll pin Ø 3 mm, L = 16 mm
Loosen the red-white-red indicating flag from the old switch.
Mount the indicating flag on the new switch in same position as on the old one.
Shift the conductors from the old switch to the new one.
Loosen the old switch and mount the new switch.
Screwdriver
Open-end wrench (30 mm)
CAUTION
CAUTION
1ZSE 5492-128 en, Rev. 4