Troubleshooting; Pump Station Troubleshooting; The Pump Station Does Not Power Up; The Station Powers Up, But The Pumps Do Not Run - Xylem Bell & Gossett TECHNOForce e-HV Series Mechanical Installation, Operation, And Maintenance Manual

7 Troubleshooting

7.1 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.
Use this Installation, Operation, and Maintenance manual for more information:
• e-SV pumps = IM228

7.1.1 The pump station does not power up

Cause
The site voltage does not match the pump station
voltage.
Line-to-line voltage is not balanced.
The power fuses are blown or breakers are tripped.
The pump station is not properly grounded (earthed).
There is a fault.

7.1.2 The station powers up, but the pumps do not run

Cause
Pumps are not enabled.
The desired pressure is satisfied.
There is a fault.
The motor is tripped.
The fuses are blown or breakers are tripped.
Transducer isolation valves are closed.
TECHNOForce e-HV Mechanical Installation, Operation, and Maintenance Manual
Remedy
Make sure that the site voltage matches the pump station
design voltage.
Check incoming voltage and amperage. Line-to-line
voltage should be balanced. Line-to-ground voltage
should also be balanced.
Check power fuses and breakers. Breakers are shipped in
the OFF position. Replace blown fuses.
Check that proper grounding (earthing) techniques have
been used for the pump station.
Check for fault codes or fault lights on the Hydrovars.
Correct the fault.
Remedy
Check the PLC to make sure that the pumps are enabled.
Check for faults. Correct any faults.
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.
Check for fault codes or fault lights on the Hydrovars.
Correct the fault.
Check for a tripped motor thermal protector. Allow motor
to cool, and then reset the thermal protector.
Check circuit breaker and fuses.
Make sure that the transducer isolation valves are in the
open position.
7 Troubleshooting
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