Fig. No.
07
-a
nut cap screw
cover cap screw
adjusting nut
drive coupling
top cover
hold down bolts
gib key
top shaft
rotating ratchet
ratchet ball
stationary ratchet
ball retaining ring
Fig. No.
07
-b
nut cap screw
cover cap screw
adjusting nut
clutch
top cover
hold down bolts
gib key
top shaft
ratchet plate
ratchet pin
Hollow Shaft Motor Mounting Components Assembly
Hollow Shaft Gear Mounting Components Assembly
8 of 10
Subject to change without prior notice
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
VERTICAL TURBINE PUMP - NVT SERIES
Ref. No. NVT-IOM/2020/V.01
Disconnect the temporary electrical conncetions before proceeding further. Install the top drive coupling or clutch over
the top shaft. Insert the ratchet pins. In case of ball type ratchet place the ratchet balls and install the rotating half of
the ratchet on top of that and place the ball retaining ring. Match the coupling lugs with corresponding holes in the
motor. Tighten the hold down bolts evenly, ensuring that the driver coupling is properly seated in the register fit.
Insert the gib key into the keyway. Key must fit snugly but with a sliding fit and should have a slight clearance with the
ratchet pin or balls (with rotating half of the ratchet) check the motor rotation. Motor must rotate counter-clockwise
when viewed from the top end. Refer Fig. No.
07
-a and
07
-b for the details of general arrangement of the driving
mechanism for hollow shaft driver.
