Operation &
Maintenance Manual
Pump
RW
782-001-GB
HSC
08-W36
Edition 4
9/32
5.
FIRST PUMSTART
After unpacking the pump, carry out the following check
points:
5.1
Delivery-check
Check for possible transport damage and especially
check that the cable has not been nicked or
damaged.
Check for complete delivery.
When the delivery is incomplete or damaged, please
contact your dealer immediately.
5.2
Oil level
Check the oil level. (see 7.5)
5.3
Power supply
Before making the electrical connections, check if
the line voltage and frequency are the same as on the
pump dataplate.
If thermostats are supplied make sure that they are
correctly connected.
For examples of electrical diagrams and pump
cable coding, see appendix 2, 3 and 4.
5.4
Thermoswitches
Check if the pump is equipped with thermo-switches
(optional for RW20 and RW40, standard for RW60
series).
Contact rating: max. 250V-1.6A
The contacts are normally closed.
5.5
Cable entry
Especially when the pump has been in store for a
long time, the cable gland should be checked and
if necessary tightened (see 7.4).
5.6
Motor protection
The pump should always be connected to the line by
means of a suitable motor protection circuitbreaker.
If the pump is started direct on line (DOL), the protection
breaker should be set to the current, as given on the
dataplate.
For star delta start (YD), it is good practice to install the
overcurrent relay directly after the main contactor. In
this case, the pump is also adequately protected in star-
connection. The maximum setting of the overcurrent relay
is 0.6x the current as given on the dataplate.
It is good practice to set the protection breaker at a 10%
lower current, because all breakers require at least
110% of the adjusted current before tripping.
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