4.2.5 Changing terminal box positions
DANGER
Electric shock
Death or serious personal injury
‐ Before starting work on the pump,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
The terminal box can be turned to four positions, in
90 ° steps.
Change the terminal box position as follows:
1. If necessary, remove the coupling guards using a
screwdriver. Do not remove the coupling.
2. Remove the screws securing the motor to the
pump.
3. Turn the motor to the required position.
4. Replace and tighten the screws.
5. Replace the coupling guards.
4.2.6 Base plate
Single-head pumps (except TP 25-50, 25-80, 25-90,
32-50, 32-80, 32-90, 40-50, 40-80 and 40-90) have
two tapped holes in the bottom of the pump housing
which can be used for fitting a Grundfos base plate to
the pump. The base plate is available as an optional
extra.
Twin-head pumps have four tapped holes in the
bottom of the pump housing. For some twin-head
pumps, a base plate consisting of two halves is
available.
4.2.7
Insulation
Do not insulate the motor stool as this will
trap any vapour escaping from the shaft
seal, thus causing corrosion. Covering the
motor stool with insulation will also make
inspection and service difficult.
Follow the guidelines in the figure below when
insulating the pump.
TM052328
Insulation of TP pumps
Pos. Description
A Without insulation
B Incorrect insulation
C Correct insulation
4.3 Frost protection
Pumps which are not being used during periods of
frost must be drained to avoid damage.
4.3.1
Condensation cover
When installing the pumps outdoors, provide the
motor with a suitable cover to avoid condensation,
and make sure that the drain hole in the motor flange
is open and points downwards. See the figure below.
TM009831
A: Drain hole
Drain hole in motor flange
When mounting the condensation cover on top of the
motor, make sure to leave enough space for the air to
cool the motor.
15
English (GB)
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