Screw Tightening Torques; Faults, Causes And Remedies; Faults - Wilo Atmos TERA-SCH Serie Einbau- Und Betriebsanleitung

en
9.7.3

Screw tightening torques

Property Torque
class
Nm
8.8
Ft. lb.
Table 19: Tightening torques – Untreated Screw (black finish); Coefficient of Friction 0.14
10

Faults, causes and remedies

10.1

Faults

42
Faults, causes and remedies
ƒ
Slide in the mechanical seal covers (7) at their respective positions and tighten the
belonging bolts (28).
ƒ
Check the proper position of the wear ring (25).
ƒ
Fix the hose pipes (19) to the mechanical seal covers (7).
NOTICE
While assembling stainless steel components, apply molybdenum-disulphide paste
to prevent galling/seizure. Doing this also facilitates easy removal in future.
Nominal diameter – Coarse thread
M6 M8 M10 M12
9.2 22 44 76
6.8 16.2 32.5 56
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
WARNING
No persons are allowed to be present inside the working area of the
pump!
Persons may suffer (serious) injuries while the pump is in operation! No persons may
therefore be present inside the working area. If persons must enter the working area
of the pump, the pump must be decommissioned and secured against being
switched on again without authorisation.
WARNING
Sharp edges on the impeller!
Sharp edges can form on the impeller. There is danger of limbs being severed! Pro-
tective gloves must be worn to protect against cuts.
Further steps for troubleshooting
If the points listed here do not rectify the fault, contact customer service. Customer
service can assist in the following ways:
ƒ
Telephone or written support.
ƒ
On-site support.
ƒ
Inspection and repair at the factory.
Costs may be incurred if you request customer services! Please contact customer ser-
vices for more information.
Possible error types
Error type
1
2
M14 M16 M20 M22
122 190 300 350
90 140 221 258
M24 M27 M30 M33
500 600 1450 1970
369 443 1069 1452
Description
Delivery rate too low
Motor overloaded
WILO SE 2020-10
M36
2530
1865