Direction Of Rotation; Resetting The Pump; Storing The Product - Grundfos AP40-70 Montage- Und Betriebsanleitung

• Install the start level switch, so the pump is
started at the required level. The pump must
always be started before the liquid level reaches
the bottom of the inlet pipe.
Start and stop levels
Position
1
2
3

6.3 Direction of rotation

All single-phase pumps are factory-wired for the
correct direction of rotation. Before starting up three-
phase pumps, check the direction of rotation. An
arrow on the stator housing indicates the correct
direction of rotation.
The impeller rotates clockwise. When
started, the pump jerks counterclockwise.
Procedure 1:
1. Start the pump and measure the quantity of liquid
or the outlet pressure.
2. Stop the pump and interchange two phases in
the power cable.
3. Restart the pump and measure the quantity of
liquid or the outlet pressure.
4. Stop the pump.
5. Compare the results of steps 1 and 3. The
connection which gives the larger quantity of
liquid or the higher pressure is the correct
direction of rotation.
14
1
2
3
Description
Alarm
Start
Stop
Procedure 2:
1. Let the pump hang from a lifting device such as
the chain used for lowering the pump into the pit.
2. Start and stop the pump while observing the
movement (jerk) of the pump.
3. If connected correctly, the pump jerks
counterclockwise.
4. If the direction of rotation is wrong, interchange
two phases in the power cable.
Jerk direction

6.4 Resetting the pump

To reset the pump, switch off the power supply for a
minute, then switch it on again.

7. Storing the product

Newly delivered products can be stored for 1 year
without opening the original package.
DANGER
Electric shock
Death or serious personal injury
‐
It must be possible to lock the main
switch in position 0. Type and
requirements as specified in EN
60204-1.
For periods of storage the pump must be protected
against moisture and heat.
After a period of storage, inspect the pump before
putting it into operation. Make sure that the impeller
can rotate freely. Pay attention to the condition of the
shaft seals, O-rings and the cable entries.
Leave the cable-end protectors on the
power and control cables until starting the
electrical connection. Whether insulated or
not, the free cable end must never be
exposed to moisture or water. Non-
compliance with this may cause damage
to the motor.