Grundfos MGE F, Service Instructions Manual

Page: 19 / 32

English (GB)
19
5. Maintenance
Follow these instructions when it is necessary to maintain the
motor or the terminal box.
Position numbers of components (numbers in brackets) refer to
section
7. Drawings and diagrams
.
Position letters of tools (letters in brackets) refer to section
9. Service tools
.
Prior to dismantling
Disconnect the mains supply in accordance with local regulations.
During assembly
Tighten screws and nuts to the correct torque. See section
8.1 Tightening torques
.
5.1 Lubrication of motor bearings
5.1.1 Grease and lubrication intervals
The recommended grease type and quantity and the
recommended lubrication intervals in hours appear from the
lubricating plate fitted to the motor. When the MGE-F has reached
the prescribed number of operating hours, it will give a lubrication
warning that will appear on Grundfos GO Remote or PC Tool E-
products. See section
4. Fault finding
.
5.1.2 Lubrication procedure
Connect the grease gun to the lubricating nipples, and apply the
prescribed quantity of grease.
Confirm the lubrication in Grundfos GO Remote. Confirmation
can also be made via PC Tool E-products.
WARNING
Electric shock
Death or serious personal injury
- Installation, commissioning, service, and
maintenance of equipment, systems, and circuits
may only be performed by Grundfos service
technicians or a Grundfos Authorised Service
Partner (ASP) who have attended training
equivalent to Grundfos Electronics Service Expert
(GESE) or similar.
- Always observe local applicable safety regulation.
WARNING
Electric shock
Death or serious personal injury
- Due to the capacitors of MGE-F, touching live
electrical parts may be fatal, even after the mains
supply has been disconnected. Disconnect the
mains supply, and wait at least 30 minutes or the
amount of time stated on the warning label under
the terminal box cover before touching any live
parts.
- Note that the relay may be connected to an
external power supply and still be live after the
mains supply to the motor has been disconnected.
- Make sure that the mains cover is fitted in MGE-F
if you perform service work where fault finding with
power on and/or with connection to PC Tool Link is
needed. Turn off power and wait for the control box
to be de-energised before you check whether the
mains cover is fitted. If the mains cover is missing,
you can order it by part number 99926860.
CAUTION
Hot surface
Minor or moderate personal injury
- MGE-F may be hot.
The motor must be running during the lubrication.
This ensures that the new grease is distributed
evenly and that the old grease is pressed out of the
bearing.