Screw Tightening Torques - Wilo Stratos GIGA Einbau- Und Betriebsanleitung

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13.5.3

Screw tightening torques

150
9. For cable connections and securing the module cover, please also see the "Screw
tightening torques for electronic module" table.
Ensure that no drips can run into the electronic module:
• Bend the cables into a drain loop near the threaded cable gland
• Unused cable glands should be sealed with the sealing washers provided and screwed
tight.
CAUTION
Risk of material damage if the electronic module is not in-
stalled!
Normal operation of the pump is only permitted with the electronic
module installed!
The pump must not be connected or operated without the electronic
module being installed!
NOTICE
The electronic module must be dismantled and installed ac-
cording to the instructions enclosed with the spare part!
CAUTION
Risk of material damage due to lack of ventilation of the elec-
tronic module!
For motor powers ≥ 11 kW, the electronic module features a built-in
speed-controlled fan for cooling. The fan switches on automatically if
the heat sink reaches 60 °C.
The fan draws in air from the outside, which is guided over the outer sur-
face of the heat sink. It only runs when the electronic module is operated
under load. Depending on the prevailing ambient conditions, dust drawn
in via the fan might collect in the heat sink.
• Check electronic modules ≥ 11 kW for contamination at regular inter-
vals.
• Clean fan and heat sink if required.
Component Thread
Control terminals –
Power terminals –
Earth terminals –
Electronic module – –
motor
(tie bolts)
Module cover M6
Threaded cable M12x1.5
gland union nut
M16x1.5
M20x1.5
M25x1.5
M40x1.5
Table 21: Screw tightening torques for electronic module
Always tighten screws diagonally.
Installation and operating instructions • Wilo-Stratos GIGA, Wilo-Stratos GIGA B • Ed.01/2023-05
Tightening torque Installation inform-
[Nm] ± 10 % ation
0.5
1.3
0.5
4.0
4.3
3.0 1x threaded cable
gland M12 reserved
6.0
for connecting cable
8.0
for an optional dif-
ferential pressure
11.0
sensor
16