WAGNER Cobra 40-10 Original Operating Manual

47
VERSION 01/2018
ORDER NUMBER DOC 2340851
Cobra 40-10 / 40-25
11 FUNCTION TEST AFTER THE REPAIR
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 sta.
Activities Aid tools
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).
Manual inspection
2. Oil lling
− Mount pressure and uid section on frame. Push piston into air motor-side
end position. Fill pre-assembled pump with oil via lling 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 8.2.9).
Oil lling unit
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: <100k
Ohmmeter
− Check conductivity between the piston and the grounding connection:
<100k
These inspections are − relevant!!
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
ushing 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 o.
Close air-supply ball-valve without relieving and check for pressure-loss.
Check seal of following modules:
Air motor:
Test medium
compressed air
Leak spray
Fluid section:
Test medium: suitable
ushing agent
− Flange seal
− Ball valve (in all positions)
− Pressure stage
− Fluid section
5. General inspections
− 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 14).
Torque wrench
Visual check
− Check all threaded connections.
− Empty the device completely and relieve pressure.
− Check function of frame or transport trolley. Check whether the pump is
mounted
horizontally on the frame.

WAGNER Cobra 40-10 Specifications

General

Brand	WAGNER
Model	Cobra 40-10
Category	Water Pump
Language	English