Grundfos SQE 1-140 96510147 [19/388] Checking the power supply
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Grundfos SQE 1-140 96510147 [19/388] Checking the power supply

Grundfos SQ 1-140 96510195 [19/388] Checking the power supply
English (GB)
19
11. Checking the power supply
12. 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.
13. 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.
Subject to alterations.
Warning
Before starting any work on the pump/
motor, make sure that the power 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 5. Electrical connection.
Large variations in supply voltage indicate
poor power 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.
L
N
PE
Warning
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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