Checking The Power Supply; Environment; Disposal; Warning - Grundfos SQ Serie Montage- Und Betriebsanleitung

11. Checking the power supply

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
L
N
PE
2. Current consumption

12. 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/
motor and the riser pipe, which can be
injurious to persons and the
environment.
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.
20
Measure the voltage (RMS)
between phase and neutral.
Connect the voltmeter to the
terminals at the connection.
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.
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.
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.
Subject to alterations.