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Operating manual Piston Pump EvoMotion 20-30
11 Function Test after Repair Work
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
1.1 Filling with separating agent
4 See Chapter Filling with Separating Agent [8 40].
1.2 EX-relevant inspections
1. Check the ground connection between the corresponding ground
connection of the pump and the frame/trolley, and between the individual
parts of the frame/trolley:
<100 kΩ
2. Check conductivity between the piston and the grounding connection:
<100 kΩ
These tests are
-relevant!
1.3 Testing for leaks
1. Connect the air motor to the air supply (7 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 seal of following modules:
- fluid section
- mounted valves and regulators
1.4 General inspections
1. Check the tightening torques of various screws; see Chapter Spare Parts
[8 53].
2. Check all fittings.
3. Empty device in a controlled manner (Chapter Emptying Pump [8 41]) and
depressurize (Chapter Pressure Relief / Work Interruption [8 34]).
4. Check the functionality of the frame or transport trolley.
48
Aid tools
Ohmmeter
(Measurement voltage
500...1000 VDC)
Air motor:
Test medium: Com-
pressed air
Leak spray
Fluid section:
Test medium: Suitable
flushing agent
Torque wrench
Visual check
Order number 2333553 | Edition 09/2020
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