17
10. Checking the electricity supply
11. Environment
During handling, operation, storage and transport, all
environment regulations dealing with the handling of
hazardous materials must be observed.
In case of doubt, please contact Grundfos or the
local authorities.
12. Disposal
Disposal of this product or parts of it must be carried
out according to the following guidelines:
1. Use the local public or private waste collection
service.
2. In case such waste collection service does not
exist or cannot handle the materials used in the
product, please deliver the product or any
hazardous materials from it to your nearest
Grundfos company or service workshop.
Before starting any work on the pump/motor, make sure that the electricity supply has been
switched off and that it cannot be accidentally switched on.
1. Supply voltage
TM00 1371 4904
Measure the voltage (RMS)
between phase and neutral.
Connect the voltmeter to the
terminals at the connection.
The voltage should, when the motor is
loaded, be within the range specified in
section 4. Electrical connection.
Large variations in supply voltage indicate
poor electricity supply, and the pump should
be stopped until the defect has been
remedied.
2. Current consumption
TM00 1372 5082
Measure the current (RMS)
while the pump is operating at
a constant discharge head (if
possible, at the capacity where
the motor is most heavily
loaded).
For maximum current, see
nameplate.
If the current exceeds the full load current,
there are the following possible faults:
• Poor connection in leads, possibly in the
cable joint.
• Too low supply voltage, see item 1.
When the pump is taken out of
operation, it must be ensured that no
hazardous material is left in the pump/
motor and the riser pipe, which can be
injurious to persons and the
environment.
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