Xylem AquaBoost CS and VS Pumping Packages - Manual (Page 41)

Troubleshooting
Pump station troubleshooting
DANGER:
• Personal injury hazard. Troubleshooting a live control panel exposes personnel to
hazardous voltages. Electrical troubleshooting must be done by a qualified electrician.
Failure to follow these instructions will result in serious personal injury, death, and/or
property damage.
• Electrical hazard sufficient to kill. Always disconnect and lock out the power before you
service the unit.
WARNING:
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
Note that some troubleshooting procedures apply to only constant speed systems or only
variable speed systems.
The pump station does not power up
Cause Remedy
The site voltage does not match the pump station
voltage.
Make sure that the site voltage matches the pump station
design voltage.
Line-to-line voltage is not balanced. Check incoming voltage and amperage. Line-to-line
voltage should be balanced. Line-to-ground voltage
should also be balanced.
The power fuses are blown or breakers are tripped. Check power fuses and breakers. Breakers are shipped in
the OFF position. Replace blown fuses.
The pump station is not properly grounded (earthed). Check that proper grounding (earthing) techniques have
been used for the pump station.
There is a fault. Check for fault codes or fault lights on the PLC. Correct
the fault.
The station powers up, but the pumps do not run
Cause Remedy
Pumps are not enabled. Check the PLC to make sure that the pumps are enabled.
Check for faults. Correct any faults.
The desired pressure is satisfied. Check to see if the desired pressure is satisfied. If the
actual pressure is greater than the set point pressure,
then the pumps are automatically stopped.
There is a fault. Check for fault codes or fault lights on the PLC. Correct
the fault.
The motor is tripped. Check for a tripped motor thermal protector. Allow motor
to cool, and then reset the thermal protector.
The fuses are blown or breakers are tripped. Check circuit breaker and fuses.
Transducer isolation valves are closed. Make sure that the transducer isolation valves are in the
open position.
Automatic mode is faulty. Check to see if the pump can be run in Manual mode on
the PLC.
Troubleshooting
AquaBoost CS and VS Pumping Packages Installation, Operation, and Maintenance Manual 39