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2. If rotating the impeller proves difficult or rubbing noises can be heard, open the
pump and eliminate the causes.
Checking the pump for any leakage
✓
The notes and steps stated in (
46) have been observed/carried out.
✓
The pump rotor can be rotated freely and easily.
1. Close the flanges and screwed plugs of the pump.
2. Subject the pump to a leak test.
- Medium: dry compressed air or nitrogen
- Pressure: 2 bar
- Duration: 30 minutes
3. Apply a leak detection spray to all sealed parts (e.g. casing seals, screwed plugs).
4. If the pressure drops, locate the cause (with the leak detection spray) and ensure
tight sealing.
5. If the pressure does not drop, the pump can be returned to operation.
For installing the pump in the system observe the information in (
Page 18).
For storage observe the instructions in (
7.6
Tightening torques
Table 16: Tightening points
Motors DS 90
Motors DS 112 and DS 132
Table 17: Tightening torques for screwed connections
Description
Part No.
Thread
Material
Tightening torque M
A
[Nm]
New threads
11)
-15 %
12)
Stud
902.01
M10
8.8
35
30
A2-70
35
30
Socket head cap
screw
914.04
M8
A4-70
18
15
914.38
M8
A4-70
18
15
M10
A4-70
35
30
11)
Applicable to the initial tightening of new threads
12)
After repeated tightening of the threads and in case of good lubrication the values shall be reduced by approx. 15 %. The
values do not apply, if general assembly drawings or other instructions state different values.
7 Servicing/Maintenance
Etaseco/Etaseco I
47 of 60
Summary of Contents for Etaseco C
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