English (GB)
24
12. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
4. Insulation resistance
a) Insulation
resistance, MS
TM00 1374 5092
Disconnect the submersible
drop cable from the motor-
protective circuit breaker or
the sine wave filter. Measure
the insulation resistance
from each phase to earth
(frame). Earth connection
has to be established
carefully.
If the insulation resistance is below 0.5 MΩ, pull out
the pump assembly for motor, cable or cable
termination repair. Local regulations may specify
other values for the insulation resistance.
b) Insulation
resistance,
MMS
TM00 1374 5092
Motors outside a well:
Clean the motor cable end.
Installed motors:
Disconnect the submersible
drop cable from the motor-
protective circuit breaker and
clean the cable end (contact
points).
Measure the insulation
resistance from each phase
to earth (frame) using an
insulation tester (500 VDC,
2min.).
Earth connection has to be
established carefully.
Check the value on the instrument.
If the insulation resistance is lower than the values
below, pull out the pump assembly for checking and
repair.
The values apply to an ambient temperature of 20 °C
(68 °F).
With drop cable:
• new motor: 4 MΩ.
• used motor: 2 MΩ.
Without drop cable:
• new motor: 200 MΩ.
• used motor: 20 MΩ.
To Next Page
Loading...
