c)
Secure the motor with capscrews.
5.
On drivers with a non-reverse ratchet or pins, manually turn the driver shaft clockwise when viewed
from the top, until the non-reverse ratchet or pins fully engage.
6.
Lubricate the motor bearings according to the instructions on the lubrication plate attached to the
motor frame.
7.
Make temporary electrical connections according to the tagged leads or the diagram attached to the
motor.
The motor must rotate counterclockwise when viewed from the top. See the arrow on the pump name-
plate. If the motor does not rotate counterclockwise, change the rotation by interchanging any two leads
(for three phase only). For single-phase motors, see the instructions from the motor manufacturer.
If motor shaft-end-play adjustment is required, check it using a dial indicator before you connect the
pump coupling to the solid-shaft motor. Consult the applicable motor manufacturer instruction manual for
detailed information on motor shaft end play.
4.10.1 Install the coupling hub
1.
Apply a thin film of oil on the pump key and insert the key into the headshaft keyway seat.
2.
Gently lower the pump half of the coupling hub onto the headshaft.
3.
Thread the adjusting plate onto the headshaft until it is flush with the top of the headshaft.
4.
Apply a thin film of oil to the driver key and insert the key into the drive-shaft keyway seat.
5.
Place the driver half of the coupling hub onto the drive shaft with the key and slide it up the drive
shaft until the annular groove is exposed.
6.
Install the split ring in the groove and slide the driver half of the coupling hub down over the split
ring to capture it.
7.
If the pump is supplied with an adjustable spacer coupling, install the spacer between the headshaft
and the drive shaft hubs.
8.
Secure with capscrews and hex nuts.
4.10.2 Impeller adjustment
NOTICE:
•
When a mechanical seal is provided, make sure it is not secured to the shaft during im-
peller adjustment. The shaft must move up or down within the seal assembly.
•
For pumps that handle liquids between -45°C to 93°C | -50°F to 200°F, you can make im-
peller adjustments under ambient conditions. For liquids in excess of this range, make
any impeller adjustments after the pump reaches the temperature of the liquid. In situa-
tions where this is not feasible due to safety considerations, or impossible due to external
ice buildup in cryogenic applications, refer to the factory for specific instructions.
•
Improper impeller adjustment can cause contact between the rotating and stationary
parts. This may result in sparks and heat generation.
Example figures
Impeller adjustment is identical for all drivers. Adjust the impeller by turning the adjusting plate.
At location A in these two figures, measure the impeller adjustment before you tighten the coupling cap-
screws:
4.10 Install a solid-shaft driver
38
Model VCW Installation, Operation, and Maintenance
Summary of Contents for Goulds Pumps VCW
Page 1: ...Installation Operation and Maintenance Model VCW ...
Page 2: ......
