Function Test After Repair Work - WAGNER Cobra 40-10/2K Operating Manual

VERSION 04/2018
OPERATING MANUAL

11 FUNCTION TEST AFTER REPAIR WORK

After all repairs, the device must be checked for safe condition before recommissioning.
The necessary scope of inspection and testing depends on the repair carried out and must
be documented by the repair personnel.
Activity
1. Piston travel
− It must be possible to move the piston rod on both sides up to stop with a
pre-assembled pressure stage. Balancing bore must be completely open in
the respective end position (Visual inspection, see Chapter 14.4).
2. Oil filling
− Mount pressure and fluid section on frame. Push piston into air motor-side
end position. Fill pre-assembled pump with oil via filling port until oil is
visible in the oil tank. Push piston into the opposite end position. Fill pump
further with oil until just below end of oil tank inspection window (see
Chapter 8.2.8).
3. EX-relevant inspections
− Check mass connection between grounding connection of the pump and
the frame/trolley and between the individual components of the frame/
trolley: <100kΩ
− Check conductivity between the piston and the grounding connection:
<100kΩ
These inspections are
4. Testing for leaks
− Connect the air motor to the air supply 6 bar.
To perform a leak test on the device, the product pressure with the flushing
agent is slowly increased in increments until the maximum pressure
indicated on the type plate is reached. Close pump outlet. Allow to stand in
this position for 0.5-1 minute and listen for audible blowing off. When the air
supply is turned off, a drop in pressure must be watched for.
Check seal of following modules:
− flange seal
− ball valve (in all positions)
− pressure stage
− fluid section
5. General inspections
− Check tightening torque of various screws.
Tighten hexagon screws M12x65 and input valve housing with the
prescribed torque (see Chapter 14).
− Check all fittings.
− Empty the device completely and relieve pressure.
− Check function of frame or transport trolley. Check whether the pump is
mounted
horizontally on the frame.
ORDER NUMBER DOC 2349980
− relevant!!
Cobra 40-10 / 2K
Means
Manual inspection
Oil filling unit
Ohmmeter
Air motor:
Test medium
compressed air
Leak spray
Fluid section:
Test medium: suitable
flushing agent
Torque wrench
Visual check
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