Bell & Gossett P2002290A Series e-90 ECM Motor IOM - Manual (Page 4)

2
● Insulate all connections carefully to prevent grounding or short circuits. Reinstall
all conduit and terminal box covers. To avoid overheating and loss of
performance, voltage to the motor control unit must be within plus or minus 10%
of the nameplate voltage.
●
Code requirements differ from state to state. Install equipment in accordance
with the applicable codes and ordinances in your area and in accordance with
NEC. All electrical connections should be made and maintained by a qualified or
licensed electrician.
●
Make sure there are no unusual noises or vibrations when the motor is running.
If noise and vibration are observed, refer to the appropriate Troubleshooting
section.
●
Avoid contact with energized circuits or rotating parts.
●
Provide proper safeguards for personnel against rotating parts.
●
All aspects of the installation must conform to the applicable requirements of the
NEC, including Article 430 (Motor Circuits and Controllers), as well as all local
codes.
Always disconnect electrical power at the fuse box or circuit breaker before
handling electrical connections or performing maintenance on this unit. Allow the
motor to come to a complete stop and wait four (4) minutes. This allows the
capacitors to discharge any residual voltage for safety
.
Double-check to make sure the power is removed, and that it is locked out while
you are working on the equipment.
A poor electrical connection can overheat and cause terminal and/or terminal board
failures. Examine the wiring harness quick-­connect terminals carefully for any signs of
physical deterioration or loose fit to the terminals on the motor terminal board.
Care must be taken to assure connections are made to the proper terminals and
adequate electrical clearances are maintained.
Make sure the unit is electrically grounded and that proper electrical installation
wiring and controls are used consistent with local and national electric codes.
Refer to National Electrical Code Handbook and NFPA No. 70. Employ qualified
electricians.
●
●