Operation &
Maintenance Manual
Pump
RW-R
782-007-GB
HSC
02-W51
Edition 1
19/28
8.
TRANSPORT AND STORAGE
The pump can be transported and stored in both
horizontal and vertical position.
Never lift the pump by the motorcable or
discharge hose. Always use the suspension
bracket !
In case of long storage, the pump must be protected
against moisture and heat.
Before storing the pump clean it with a water jet and
check the motor housing for water ingress (see chapter
7.7) .
On a regular base (every three months), turn the
impeller by hand, this is necessary to prevent
sticking of the mechanical seal surfaces (see Fig. 8.1).
After 6 months of storage, a general inspection is
advised, before installing the pump.
Follow the instructions of chapter 5.
9.
OPTIONS
9.1
Waterdetector
As a safeguard against water ingress into the motor, the
pump can be equipped with a waterdetector.
When your pump is equipped with a waterdetector, this
can be found on the dataplate.
See appendix 1: at position 24 a “W” is stamped.
The waterdetector detects water which might have
entered the oilhousing or motorhousing due to seal
failure or cable damage.
The waterdetector causes the pump to switch off,
before damage to the motor is done.
The probe itself is a non active electrode, placed in oil-
and motorhousing. It is used in conjuction with a relay in
the control circuit that measures the resistance between
probe and frame.
If only air or oil is present, the resistance is over
5000 Ohm. If water enters, the resistance will
decrease to as low as 300 to 500 Ohm
We advise to use OMRON relay 61 F-GP
or an equivalent.
This relay switches at 5000 ohm.
No water present:
-
high resistance between terminals 1and 7
(>5000 Ohm)
-
terminals 2 and 4 closed
-
terminals 3 and 4 open
Fig. 8.1
Fig. 9.1
electrode
frame
oil
water
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