Fault Finding - Grundfos Conlift1 Manual Del Usuario

10. Fault finding

Warning
Before starting fault finding, switch off the power supply and make sure that it cannot be
accidentally switched on.
Work on electric systems and components must only be carried out by an authorised
electrician.
Fault
1. The pump does not
run.
2. Reduced or no
performance.
3. Frequent
starts/stops.
4. Alarm.
11. Accessories
The following accessories for the Conlift are available from your local Grundfos supplier.
Accessory/
service part
pH+ Box
Extension hose
Granulate refill package Granulate, 4 x 1.4 kg.
Alarm PCB Conlift
Cause
a) No power supply.
b) Fuse is blown.
c) Power supply cable
damaged.
d) Thermal overload switch has
tripped:
– The motor is not
sufficiently cooled.
– Deposits in the pump.
a) Discharge hose squeezed or
broken.
b) The non-return valve does
not open.
c) The motor fan cannot be
turned freely.
a) The non-return valve does
not close.
b) The inlet quantity is too high.
a) The condensate is not
pumped out of the tank.
Description
Complete neutralisation unit including fitting accessories,
neutralisation granulate and pH indicator.
6 metres of PVC hose with 10 mm internal diameter
including one hose coupling.
Printed-circuit board (PCB) enabling additional pump start
at alarm level or stop of boiler with acoustic alarm.
Remedy
Connect the power supply.
Replace the fuse (10 A slow-blow fuse).
Repair or replace the cable. This must only be
carried out by an authorised service workshop or
by Grundfos.
Clean the cooling slots in the motor cover.
Clean the impeller, pump housing and the entire
lifting station.
Straighten the discharge hose or replace it.
The bending radius of the hose should be at
least 60 mm.
Remove the discharge connection, and clean the
non-return valve.
Clean the pump housing and the impeller.
Remove the discharge connection, and clean the
non-return valve.
Make sure the inlet quantity is correct.
See points 1 and 2.
Product number
97936176
97936177
97936178
97936209
13