Grundfos SCALA1 User Manual

15.2 The pump does not start
Grundfos Eye
Indicator
light
Automatic
reset
Cause Remedy
- -
The fuses in the electrical
installation have blown.
Replace the fuses. If the new
fuses blow as well, check the
electrical installation.
- -
The earth leakage circuit
breaker or the voltage-
operated circuit breaker has
been tripped.
Cut in the circuit breaker.
- - No power supply.
Contact the power supply
authorities.
- -
The difference between
SCALA1 unit and the tapping
point is too large.
Adjust the installation or select
a SCALA1 unit with a higher
head.
15.3 The pump is not running
Grundfos Eye
Indicator
light
Automatic
reset
Cause Remedy
-
- Power supply failure.
Switch on the power supply.
Check the cables and cable
connections for defects and
loose connections. Check for
blown fuses in the electrical
installation.
Yes
Dry-running or water
shortage.
Check the water source, and
prime the pump.
Impurities are blocking the
inlet pipe.
Clean the inlet pipe.
The foot or non-return valve
is blocked in a closed
position.
Clean, repair or replace the
foot or non-return valve.
Leakage in the inlet pipe. Repair the inlet pipe.
Air in the inlet pipe or the
pump.
Prime the inlet pipe and the
pump. Check the inlet
conditions of the pump.
No
Maximum runtime has been
exceeded.
Check the installation for
leakage and reset the alarm.
28
English (GB)

Grundfos SCALA1 Specifications

General

Inlet/Outlet Size	1 inch
Weight	10 kg
Mains Frequency	50/60 Hz
Pumped liquid	Clean water
Housing Material	Composite
Pump Type	Self-priming, multistage centrifugal pump
Power Supply	1 x 230 V
Liquid Temperature Range	0°C to 45°C
Protection Class	IPX4D
System Pressure	Max. 10 bar
Approvals	CE, EAC
Installation Type	Horizontal