8. Mechanical installation
WARNING
Hot or cold surface
Death or serious personal injury
‐ Make sure that no one can accidentally
come into contact with hot or cold
surfaces.
In order to maintain the UL mark,
additional requirements apply to the
equipment. See section Installation in the
USA and Canada.
Install the pump in a dry well-ventilated, but frost-free
position.
When installing pumps with oval bolt holes in the
pump flange, PN 6/10, use washers as shown in the
figure below.
TM010683
Use of washers for oval bolt holes
Pos. Description
1 Washer
2 Installation
3 Pump
Arrows on the pump housing show the direction of
flow of liquid through the pump.
You can install the pump in horizontal or vertical
pipes.
The motor must never fall below the
horizontal plane.
For inspection and removal of motor or pump head, a
clearance of 300 mm is required above the motor.
See the figure below.
TM057916
Required clearance above the motor
Twin-head pumps installed in horizontal pipes must
be fitted with an automatic air vent in the upper part of
the pump housing. See the figure below.
The automatic air vent is not supplied with the pump.
TM057983
Automatic air vent
If the liquid temperature falls below the ambient
temperature, condensation may form in the motor
during standstill. In this case, make sure that one of
the drain holes in the motor flange is open and points
downwards. See the figure below.
12
English (GB)
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