Instruments Not Allowed; Checking Of Motor And Cable; Environment - Grundfos SQE-NE Instrucciones De Instalación Y Funcionamiento

13.1 Instruments not allowed

Note: The use of the following instruments is not
allowed during troubleshooting.
Insulation Resistance
test test
M
Fig. 12 Instruments not allowed
Note: When measuring, use RMS instruments.

14. Checking of motor and cable

1. Supply voltage
L
N
PE
2. Current consumption

15. Environment

During handling, operation, storage and transport,
all environment regulations dealing with the handling
of hazardous materials must be observed.
WARNING:
When the pump is taken out of operation,
it must be ensured that no hazardous
material is left in the pump and in the riser
pipe, which can be injurious to persons
and the environment.
High-voltage
test
V
Measure the voltage L1 (RMS)
between phase and L2.
Connect the voltmeter to the
terminals at the connections.
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
motor nameplate.
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 problem has been
corrected.
If the current exceeds the full-load current,
there are the following possible faults:
• Poor connection in the leads, possibly
in the cable joint.
• Too low supply voltage, see item 1.
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