Sensors; Startup - Grundfos AP40-70 Montage- Und Betriebsanleitung

5.3 Sensors

The thermal switch in circuit 1 (T1-T3) and in circuit 2
(T1-T2) breaks the circuit at an approximate 140 °C
winding temperature.Thermal protection must always
be connected.
AP40 (1-phase)
Thermistor enclosed in
motor winding. It has an
Thermal protection automatic reset after cooling
down, does not require
outside control.
Oil chamber seal
probe

6. Startup

Before starting the product:
• Make sure that the fuses have been
removed.
• Make sure that all protective
equipment has been connected
correctly.
• Check the oil level.
• Test the insulation resistance.
CAUTION
Crushing of hands
Minor or moderate personal injury
‐
Do not put your hands or any tool into
the pump inlet or outlet after the pump
has been connected to the power
supply, unless it has been switched off
by removing the fuses or switching off
the main switch.
‐
Make sure that the power supply
cannot be switched on unintentionally.
CAUTION
Biological hazard
Minor or moderate personal injury
‐
Make sure to seal the pump outlet
properly when fitting the outlet pipe,
otherwise water might spray out.
WARNING
Crushing of hands
Death or serious personal injury
‐
When lifting the pump, make sure your
hand cannot get caught between the
lifting bracket and the hook.
12
AP40-60
External thermal switch
must be connected (contact
Grundfos).
-
DANGER
Crushing hazard
Death or serious personal injury
‐
Make sure that the hook is fixed
properly to the lifting bracket.
‐
Always lift the pump by its lifting
bracket or by a forklift truck, if the
pump is fixed on a pallet.
‐
Never lift the pump by the power cable,
hose or pipe.
‐
Make sure that the lifting bracket is
tightened before lifting the pump.
DANGER
Electric shock
Death or serious personal injury
‐
Before starting up the product for the
first time, check the power cable for
visible defects to avoid short circuits.
‐
If the power cable is damaged, it must
be replaced by the manufacturer, his
service agent or a similarly qualified
person.
‐
Make sure that the product is earthed
properly.
‐
Switch off the power supply and lock
the main switch in position 0.
‐
Switch off any external voltage
connected to the product before
working on it.
CAUTION
Biological hazard
Minor or moderate personal injury
‐
Flush the pump thoroughly with clean
water and rinse the pump parts after
dismantling.
‐
Wear appropriate personal protective
equipment and clothing.
AP70
Enclosed in motor
winding, requires outside
control through the signal
wires of the power cable.
Requires outside control
through the signal wires
of the power cable.