Grundfos SCALA User Manual

English (GB)
19
2. The pump is
running.
-
a) Leakage from the
pipework, or the
non-return valve is not
properly closed due to
impurities
Check and repair the
pipework, or clean,
repair or replace the
non-return valve.
-
b) Small continuous
consumption
Check the taps and
reconsider the usage
pattern (ice machines,
water evaporators for
air-conditioning, etc.).
-
c) The temperature is below
freezing point
Consider protecting the
pump and the installation
against frost.
3. Pump
performance
is insufficient.
--
a) The pump inlet pressure
is too low
Check the inlet
conditions of the pump.
-
b) The pump is undersized.
Replace the pump with a
bigger pump.
--
c) The inlet pipe, the inlet
strainer or the pump is
partly blocked by
impurities
Clean the inlet pipe or
the pump.
--
d) Leakage in the inlet pipe
Repair the inlet pipe.
--
e) Air in the inlet pipe or the
pump
Prime the inlet pipe and
the pump.
Check the inlet
conditions of the pump.
--
f) The required outlet
pressure is too low for the
installation
Increase the pressure
setting (arrow up).
Yes
g) The maximum
temperature has been
exceeded and the pump
is running at reduced
performance
Check the cooling
conditions. Protect the
pump against direct
sunlight or any nearby
heat sources.
Fault
Grundfos Eye Indicator light Automatic reset
Cause Remedy

Grundfos SCALA Specifications

General

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