Appendix; Tightening Torques - Wilo Emu Fa+T Einbau- Und Betriebsanleitung

English
Fault: The unit runs, but not within the specified
operating parameters
1. Intake blocked
• Clean the supply line, slide valve, suction piece,
suction port or suction strainer
2. Slide valve in the pressure pipe shut
• Fully open the slide valve
3. Impeller blocked or slowed
• Switch off the pump, secure it against being
switched back on again and free the impeller
4. Incorrect direction of rotation
• Replace two phases on the mains supply
5. Air in the system
• Check the pipelines, pressure shroud and/or
hydraulics, and vent if necessary
6. Pump pumping against excessive pressure
• Check the slide valve in the pressure pipe and
open it completely if necessary, use a different
impeller, consult the plant
7. Signs of wear
• Replace worn parts
8. Faulty hose/piping
• Replace defective parts
9. Inadmissible levels of gas in the fluid
• Contact the manufacturer
10. Two-phase operation
• Have a specialist inspect the connection and
correct it as necessary
11. Excessive decrease in the water table during
operation
• Check the supply and capacity of the system,
and inspect the level control settings and
functionality
Fault: The unit does not run smoothly and is
noisy
1. Pump is operating in an inadmissible range
• Check the operational data of the pump and
correct if necessary and/or adjust the operating
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 pump, secure it against being
switched back on again and free the impeller
4. Inadmissible levels of gas in the fluid
• Contact the manufacturer
5. Two-phase operation
• Have a specialist inspect the connection and
correct it as necessary
6. Incorrect direction of rotation
• Replace two phases on the mains supply
7. Signs of wear
• Replace worn parts
8. Defective motor bearing
• Contact the manufacturer
9. Pump is installed under tension
• Check installation, use expansion joints if
necessary
70
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 pump briefly (max. 5 min.) without
pencil electrode
2. Increased leakage when running in new mechani-
cal shaft 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 pump at the factory
Please note that you may be charged for some
services provided by our customer service. For
more details, please contact Wilo customer
service.

10. Appendix

10.1. Tightening torques

Rust-free screws (A2/A4)
Thread
Nm
5.5
M5
7.5
M6
18.5
M8
37
M10
57
M12
M16 135
M20 230
285
M24
415
M27
565
M30
Geomet-coated screws (strength 10.9) with Nord-Lock
washer
Thread
Nm
M5 9.2
M6 15
36.8
M8
73.6
M10
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
WILO SE 07-2015 V05 DIN A4