Wilo STRATOS GIGA, Installation And Operating Instructions Manual

Page: 117 / 265

English
Installation and operating instructions Wilo-Stratos GIGA, GIGA-D, GIGA B
(11-22kW)
117
Table 10: Screw tightening torques
10.2.2 Replacing the motor/drive DANGER! Risk of fatal injury!
There is a risk of fatal injury from electric shock when working on
electrical devices. Following removal of the electronic module, a
potentially fatal shock voltage may be present at the motor con-
tacts.
• Ensure system is voltage-free, cover or screen off adjacent live
parts.
DANGER! Risk of fatal injury!
If the rotor is driven by the impeller when the pump is at a stand-
still, dangerous contact voltage can arise at the motor contacts.
• Close the shut-off devices upstream and downstream of the pump.
• Separate the motor shaft from the coupling unit by loosening the
coupling screws.
NOTICE:
The magnets inside the motor pose no risk to persons with pacemak-
ers
provided that the motor is not opened and the rotor is not
removed. The motor/drive can be replaced without any risk.
• Carry out steps 1 to 10 to dismantle the motor/drive in accordance
with chapter 10.2 "Maintenance tasks" on page 114.
NOTICE:
To dismantle and assemble the electronic module, observe the
enclosed instructions on the spare part.
• When installing the motor, follow steps 25 and 31 in
chapter 10.2 "Maintenance tasks" on page 114.
NOTICE:
Observe the specified screw tightening torque appropriate for the
thread type (see Table 10 „Screw tightening torques“ on page 116).
NOTICE:
Increased bearing noises and unusual vibrations indicate bearing
wear. Then the bearing has to be changed by Wilo customer service.
Coupling Fig. 6/Item 1.41
M6-10.9
M8-10.9
M10-10.9
M12-10.9
M14-10.9 12
30
60
100
170
• Slightly oil the
sliding surfaces
• Tighten the screws
evenly
• Keep the gap even
on both sides
Control terminals Fig. 9/Item 4 - 0.5
Power terminals Fig. 9/Item 7 - 1.3
Earth terminals Fig. 2 - 0.5
Electronic module Fig. 6/Item 11 M5 4.0
Module cover Fig. 3 M6 4.3
Union nuts
Cable bushings
Fig. 2
M12x1.5
M16x1.5
M20x1.5
M25x1.5 3.0
6.0
8.0
11.0 M12x1.5 is reserved
for the serial sensor
connection cable
Component Fig./Item
Screw (nut) Threaded Tightening torque
Nm
± 10 %
(if not otherwise
specified)
Installation
information