Fault Finding Chart; Disposal; Fig. 11 - Grundfos Unilift KP 150 Instrucciones De Instalación Y Funcionamiento

Electrical cord

Fig. 11

6. Fault finding chart

Fault
1. Motor does not start.
2. Thermal relay trips out
after short time of
operation.
3. Pump runs but gives
insufficient water.
4. Pump runs but gives no
water.

7. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
Use the public or private waste collection service.
8
Impeller
Nut
Gasket
Pump housing
Strainer
Cause
a) Supply failure.
b) Pump switched off by float switch/vertical level switch.
c) Fuses are blown.
d) Thermal relay has cut out the electricity supply to the motor
(see 2. Electrical connection).
e) Check cable for defects.
a) Temperature of pumped liquid higher than that stated in 1.2 Operating con-
ditions.
b) Pump partly blocked by impurities (see 4. Operation).
c) Pump mechanically blocked (see 4. Operation).
d) Check volts and amperage.
e) Check cable for defects.
a) Pump partly blocked by impurities (see 4. Operation).
b) Discharge pipe/hose partly blocked. Check the non-return valve, if fitted.
c) Check the impeller, the pump housing and the sealing part (see
4. Operation).
a) Pump blocked by impurities (see 4. Operation).
b) Non-return valve, if fitted, in discharge pipe/hose blocked in closed position.
c) Liquid level is too low. During normal operation, the liquid level must be
above the strainer.
d) Pumps with float switch: The free cable of the float switch is too long
(see 3.4 Adjustment of float switch).
Subject to alterations.