Advertisement
INSTRUCTION MANUAL
4. Electric Wiring
4.1 Power Cable Connection
WARNING
!
DISCONNECTED BEFORE WORKING ON PUMP.
The electric wiring for a submersible motor is no different from that of an ordinary
motor, except that the direction of rotation cannot be easily verified.
Wiring to wrong terminals results in a reversed motor, and to prevent this and to
achieve best results, the following wiring procedure is recommended.
Connect terminals L1, L2, and L3 (and L4, L5 and L6 in dual power cable) to the
secondary terminals L1, L2 and L3 (and L4, L5 and L6 in dual power cable) of the
electromagnetic switch or breaker respectively. Connect the remaining terminal G to
ground.
WARNING : WHEN PREPARING POWER CABLE LEADS FOR CONNECTION
!
TO CONTROL, IT IS ESSENTIAL THAT THE GROUND LEAD BE LONGER THAN
THE POWER LEADS. THE GROUND LEAD MUST HAVE AT LEAST 2 " (50 MM)
SLACK REMAINING AFTER CONNECTION, WHEN SPACE PERMITS. THIS IS
DONE FOR ELECTRICAL SAFETY. IF THE CABLES IS MISTAKENLY PULLED
OUT, THE GROUND LEAD WILL BE THE LAST WIRE BROKEN.
4.2 Grounding (Fig. 14 and Table 2)
Be sure to connect the ground line (labeled "G") to ground. Prior to grounding, ensure
that the wire is the specified one (labeled "G").
Also, verify that grounding continuity has been established inside the motor by
checking that ground wire (labeled "G") is electrically conductive with the bolt on the
top of the motor (to be stripped of paint).
Ground the motor according to local codes.
PM32U
:
CHECK THAT THE POWER IS LOCKED OFF AND
P.16
Advertisement
