WAGNER Cobra 40-10, Перевод оригинального руководства по эксплуатации

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Operating manual High-pressure double diaphragm pumps Cobra 40-10; Cobra 40-25
11 Function Test after Repair Work
58 Order number 2340851 | Edition 05/2022
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 Aid tools
1. Piston travel
4
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). Manual inspection
2. Oil filling
4 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 Filling Hydraulic Stage with Oil [
8 52]).
Oil filling unit
3. EX-relevant tests
1. Check the ground connection between the corresponding ground
connection of the pump and the frame/mobile base, and between the
individual parts of the frame/mobile base:
<100 k
Ω
2. Check conductivity between the piston and the grounding connection:
<100 k Ω
These tests are -relevant!
Ohmmeter
(Measurement voltage
500...1000 VDC)
4. Leaktightness check
1. Connect the air motor to the air supply (6 bar).
2. To perform a tightness check 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.
3. Close pump outlet.
4. In each position (with upstroke and downstroke), let sit for 0.5-1 minute(s)
and listen for audible blowing off.
5. When the air supply is turned off, a drop in pressure must be watched for.
6. Check leak tightness of the following components:
– flange seal
– ball valve (in all positions)
– pressure stage
– fluid section
Air motor:
Test medium: Com-
pressed air
Leak spray
Fluid section:
Test medium: Suitable
flushing agent
5. General checks
1. Check tightening torque of various screws. Tighten hexagon screws
M12x65 (40-10) or M16x80 (40-25) and input valve housing with the
prescribed torque (see Chapter Spare Parts [
8
65]).
2. Check all fittings.
3. Empty device in a controlled manner (Chapter Emptying Pump [
8
44]) and
depressurize (Chapter Pressure Relief / Work Interruption [
8
38]).
4. Check the functionality of the frame or transport mobile base. Check
whether the pump is mounted horizontally on the frame.
Torque wrench
Visual check