Grundfos ALPHA1 Series, Инструкция по установке и эксплуатации

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14
English (US)
9. Fault finding the product
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
Make sure that the power supply
cannot be accidentally switched on.
WARNING
Pressurized system
Death or serious personal injury
- Before dismantling the pump, drain
the system or close the isolating
valve on either side of the pump
before you remove the screws. The
pumped liquid may be scalding hot
and under high pressure.
Fault Control panel Remedy
1. The pump
does not
run. The light field is
off. a) The pump is not
connected to the
power supply.
Connect the pump to the power
supply.
b) The circuit breaker
has tripped.
Cut in the circuit breaker.
c) The pump is
defective.
Replace the pump.
The light field is
on. a) Supply voltage is too
high. Check that the power supply falls
within the specified range.
b) The rotor is blocked
by impurities.
Remove the impurities.
"
___ ___
" a) Supply voltage is too
low. Switch the power off and on.
Check for air, locked rotor and/or
voltage.
Correct the power supply.
2. Noise in
the system The light field is
on. a) There is air in the
system.
Install an air eliminator.
b) The flow is too high. Reduce the pump speed.
c) Thermal expansion
of system
components. Check the mounting brackets for
the pipes.
Secure loose mounting brackets.
3. Noise in
the pump The light field is
on. a) There is air in the
pump. Let the pump run, as it will vent
over time.
Install an air eliminator.
b) The inlet pressure is
too low. Increase the inlet pressure.
Check the air volume in the
expansion tank, if this is installed.
(Pressure leaks in the system can
lead to cavitation.)
c) No liquid (dry
running). Ensure the system has been filled
with liquid and vented.
Open the isolating valves.
d) The pump is
defective. Replace the pump.