AmeriWater SCALA2 Посібник з експлуатації та обслуговування - Сторінка 12
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FAULT FINDING
System
overpressure.
You can reset the
pump, but it runs
only for a few
seconds.
You can reset the
pump, but it starts
repeatedly,
immediately after
stopping.
5.2 Alarms and Events
If the pump does not start when the fault has been corrected, or if the fault cannot be corrected, contact
AmeriWater or Grundfos for further information.
10
5. There is air in the inlet pipe or the
pump.
6. The required outlet pressure is
too low for the installation.
The maximum temperature has
Yes
been exceeded and the pump is
running at reduced performance.
1. The setpoint is set too high. The
difference between the outlet
pressure and the inlet pressure must
not exceed 51 psi.
2. The maximum pressure has been
exceeded, the inlet pressure is
Yes
higher than 87 psi.
3. The maximum pressure has been
exceeded. Equipment elsewhere in
the system causes a high pressure
at the pump, for example water
heater or defective safety
equipment.
1. Dry running or water shortage.
2. The inlet pipe is blocked by
impurities.
3. The foot or non-return valve is
Yes
blocked in closed position.
4. There is a leakage in the inlet
pipe.
5. Air in the inlet pipe or the pump.
1. The internal non-return valve is
defective or blocked in completely or
No
partly open position.
2. The tank precharge pressure is
not correct.
SCALA2 BOOSTER PUMP
Check the cooling conditions. Protect the
pump against direct sunlight or any
nearby heat sources.
1. Reduce the pressure to a new setpoint
(maximum 51 psi + positive
inlet pressure).
2. Check the inlet conditions.
3. Check the installation.
1. Check the water source, and prime the
pump.
2. Clean the inlet pipe.
3. Clean, repair or replace the foot or
non-return valve.
4. Repair the inlet pipe.
5. Prime the inlet pipe and the pump.
Check the inlet conditions of the pump.
1. Clean, repair or replace the non-return
valve.
2. Adjust the tank precharge pressure to
70% of the required outlet pressure.
98-2039 Rev A