Extraordinary Maintenance; Operating Problems; Table - Pentair Sta-Rite DHI Series Instruction Manual

B- If check-ups reveal the presence of abnormal conditions, perform the operations described here below:
• Refer to table "Problems/Causes" under

"Operating problems"

• If the problem and cause is listed in

table

5.4 EXTRAORDINARY MAINTENANCE

Extraordinary maintenance operations performed after problems, failures, breakage or technical updates should be performed only by
authorised or specialised technicians.
NOTE
PENTAIR INTERNATIONAL S.a.r.l. declines any liability and cancels all warranty contracts in presence of:
• Operations not documented in this manual and performed on the machine.
• Extraordinary maintenance carried out by others than authorised or specialised technicians.
CHAPTER 6
OPERATING PROBLEMS
PROBLEM
THE MOTOR FAILS TO RUN WHEN STARTED
THE STARTER THERMAL SWITCH TRIPS WHEN VOLTAGE
IS APPLIED
THE THERMAL RELAY TRIPS OCCASIONALLY
WITHOUT APPARENT REASON
THE THERMAL RELAY HAS NOT TRIPPED,
BUT THE MACHINE IS UNABLE TO RUN
• "Problems/Causes" under "Operating
problems", contact an authorised
technician or a specialised technician
and report the abnormal condition
found
CAUSES
1) The line voltage has been interrupted.
2) Burnt fuse.
3) Tripped thermal relay.
4) No conduction in the starter contacts or faulty coil.
5) Burnt fuses in the auxiliary circuit.
6) Faulty motor.
1) Burnt fuse.
2) Faulty starter contacts.
3) Faulty electric connections.
4) Faulty motor windings.
5) The machine is mechanically blocked.
6) The thermal relay calibration is too low.
1) The thermal relay calibration is too low.
2) The line voltage is periodically missing.
3) The line voltage in peak periods is too low.
1) The line voltage has been interrupted.
2) Burnt fuse.
3) No conduction in the starter contacts or faulty coil.
4) Burnt fuses in the auxiliary circuit.
• If the problem and the cause is not
listed in table "Problems/Causes" under
"Operating problems", contact an
authorised technician or a specialised
technician.
EN
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