Tightening Torques; Spare Parts - Wilo RexaBloc RE Notice De Montage Et De Mise En Service

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10. Two-phase operation
• Have a specialist inspect the connection and
correct it as necessary
Fault: The unit does not run smoothly and is
noisy
1. Hydraulics are operating in an inadmissible range
• Check the operational data of the hydraulics
and correct if necessary and/or adjust the oper-
ating conditions
2. Suction port, suction strainer and/or impeller
clogged
• Clean the suction port, suction strainer and/or
impeller
3. Impeller stiff
• Switch off the hydraulics, secure them against
being switched back on again and free the
impeller
4. Inadmissible levels of gas in the fluid
• Contact the manufacturer
5. Incorrect direction of rotation
• Replace two phases on the mains supply
6. Signs of wear
• Replace worn parts
7. Shaft bearing defective
• Consult the plant
8. Hydraulics are installed under tension
• Check installation, use expansion joints if
necessary
Fault: Mechanical shaft seal leak, sealing cham-
ber control reports a fault or shuts down the
unit
1. Condensation build-up due to extended storage
and/or temperature fluctuations
• Operate the hydraulics briefly (max. 5 min)
without pencil electrode
2. Increased leakage when running in new mechani-
cal seals
• Change the oil
3. Defective pencil electrode cables
• Replace pencil electrode
4. Mechanical shaft seal is defective
• Replace the mechanical shaft seal and contact
the manufacturer!
Further steps for troubleshooting
If the points listed here do not rectify the fault,
contact Wilo customer service. They can help you
as follows:
• Telephone and/or written support from Wilo
customer service
• On-site support from Wilo customer service
• Inspection or repair of the hydraulics at the plant
Please note that you may be charged for some
services provided by our customer service. For
more details, please contact Wilo customer
service.
46
10. Appendix

10.1. Tightening torques

Rust-free screws (A2/A4)
Thread
Nm
M5 5.5
7.5
M6
18.5
M8
37
M10
57
M12
135
M16
230
M20
285
M24
415
M27
565
M30
Geomet-coated screws (strength 10.9) with Nord-Lock
washer
Thread
Nm
9.2
M5
15
M6
36.8
M8
73.6
M10
126.5
M12
155
M16
265
M20

10.2. Spare parts

Spare parts can be ordered from Wilo customer
service. To avoid return queries and incorrect or-
ders, the serial and/or article number must always
be supplied.
Subject to change without prior notice!
APPENDIX
Tightening torque
kp m
0.56
0.76
1.89
3.77
5.81
13.76
23.45
29.05
42.30
57.59
Tightening torque
kp m
0.94
1.53
3.75
7.50
12.90
15.84
27.08
WILO SE 12-2015 V05 DIN A4