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7
Installation instructions
7.1
Setting up the pump
ATTENTION
Avoid stress in the pump casing caused
by misalignment in the piping system.
Please see table below.
ATTENTION
Pumps which do not stand steady or
stable on their own, should be mounted
on a rigid and stable base.
ATTENTION
Locate the pump at the place with the
lowest risk for noise nuisance.
1.
Place and install the pump on a level, stable
surface in a dry and frost-proof room.
2.
Place the pump as close to the source/tank as
possible.
3.
Make sure that sufficient air can reach the
cooling fan of the motor. For this purpose the
free space above the cooling fan should be at
least 1/4 of the diameter of the fan hood air
intake.
4.
It is advised to install a shut off valve on the
supply and on the delivery connection of the
pump.
5.
To avoid medium flowing back through the
pump, when idle, make sure a non-return valve
is installed.
6.
To the suction line should apply:
1.
100% airtight.
2.
No camber.
3.
Running from the lowest point in the tank
straight to the pump.
4.
Provided with a foot valve that shuts off
well, making sure that the suction line is
always filled with water.
5.
If the diameter of the suction line is larger
than the pump-suction connection, then
install an eccentric adapter in order to
prevent air pockets and swirling.
7.1.1
Indicators
The arrow (A) on the fan hood indicates the rotating
direction of the motor in case of a 3 phase motor.
7.1.2
Install bypass
Install a bypass if the pump may operate against a
closed valve for a long period. The required capacity
of the bypass is at least 10% of the maximum volume
flow. At high operating temperatures a higher volume
flow is required. With temperatures above 60ºC the
required capacity is more than 10%.
ATTENTION
Do not make use of quick-closing
valves and/or shut-off valves to prevent
pressure impulses in the pump and in
the lines as a result of changes in the
flow rate
Figure 5: DPHM(C) not connected
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3139
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ID4377
Figure 6: Terminal box and fan hood sticker
2013
1395
A