Grundfos SCALA User Manual

English (GB)
18
12.3 Fault finding chart
Warning
Before starting fault finding, switch off the
power supply.
Make sure that the power supply cannot
be accidentally switched on.
Fault
Grundfos Eye Indicator light Automatic reset
Cause Remedy
1. The pump is
not running.
--
a) Power supply failure Switch on the power
supply.
Check the cables and
cable connections for
defects and loose
connections and check
for blown fuses in the
electrical installation.
Yes
b) The power supply is out
of prescribed voltage
range
Check the power supply
and the pump
nameplate. Reestablish
the power supply within
the prescribed voltage
range.
No
c) The shaft seal has seized
up
See section 9. Starting
up the product after
shutdown or standstill.
No
d) The pump is blocked by
impurities
See section 9. Starting
up the product after
shutdown or standstill.
Contact Grundfos
Service if the problem
persists.
Yes
e) Dry running
Check the water source,
and prime the pump.
No
f) The maximum runtime
has been exceeded
Check the installation for
leakage and reset the
alarm.
No
g) The internal non-return
valve is defective or
blocked in completely or
partly open position
Clean, repair or replace
the non-return valve.
See section
10. Servicing the
product.

Grundfos SCALA Specifications

General

Frequency	50/60 Hz
Maximum Suction Lift	8 m
Installation	Horizontal
Approvals	CE
Pumped liquid	Water