Installation instructions

GEI-M1011A
A very rapid decrease in speed can result in acceleration
forces great enough to prevent the pins from dropping.
This condition is further aggravated when the pins become
dirty and their action sluggish. If the time from shutdown
(the instant the “stop” button is pressed) to zero speed is
greater than two seconds, operation will be satisfactory.
To permit operation when stopping time is less than two
seconds, the pins are spring loaded. For those cases
involving cycling (frequent starting and stopping) and
stopping times greater than two seconds, the springs may
be removed to decrease wear on the ratchet plate.
Pins and springs are made of heat-treated stainless steel.
A complete non-reverse coupling consists of a self-release
coupling plus a non-reverse assembly, which includes pin
carrier, pins, springs, pin retaining plate, and cap screws.
On motors covered by this instruction book, the ratchet
teeth are an integral part of the end shield cover casting.
A self-release or a bolted coupling can be converted to a
non-reverse coupling on 324-5011 frame motors without
disturbing the adjustment of the pump shaft nut.
The non-reverse assembly will normally be received as a
unit. To assemble it onto the motor, unbolt and remove the
fan, thus exposing the coupling pins or bolts. Next, remove
the drive-pins or bolts from the lower half-coupling. Then
slide the non-reverse assembly down over the top half-
coupling. Next, insert the long cap screws through the
plate, pin carrier, and top coupling and into the lower
coupling. Tighten them securely so that torque will be
transmitted by friction between the coupling faces rather
than through the bolts. See Required Bolt Torques. Next,
remove the three smaller cap screws securing the pin
retaining plate to the pin-carrier. Finally, put the fan into
place on top of the pin-retaining plate and secure it with
the three cap screws just removed. On 213-286 frame
machines, the pump shaft nut must be removed and the
bolted or self-release coupling replaced with a non-reverse
coupling.
The top half of the coupling should seat solidly on the
lower half and the pins should touch the bottom of the
pockets between the teeth in the ratchet. The clearance
between the pin-carrier and the top of the ratchet teeth
should be between 1.5 mm (1/16 in.) and 3 mm (1/8 in.).
When installing a non-reverse coupling do not use
lubricant. Lubrication will lower the coefficient of friction
between pins and pin carrier, and the pins may not stay up
when motor reaches full speed. Motors shipped from stock
may have their top couplings and non-reverse assemblies
packaged separately. They can be installed as described in
previous paragraphs.
E. Power Supply and Connections
1. Wiring and Grounding
WARNING: Motor and
control wiring, overload
protection and grounding
should be in accordance
with the National Electrical Code and consistent
with sound local practices. Failure to observe
these precautions may result in damage to the
equipment, injury to personnel, or both.
Stator winding connections should be made as shown on
the connection diagram supplied in the Data pack or as
shown on the label attached to the inside of the conduit box
cover.
For motors with terminal boards, the standard connection
diagrams for three-phase motors of basic design are shown
in Figure 2. With all other versions, the respective
connection diagram is mounted on the inside of the box
cover. Before the conduit box cover is closed be sure that:
a. All terminal box connections are fixed
tightly.
b. The minimum air distances are met.
c. The interior of the terminal box is clean
and free from foreign materials.
d. Cable openings not used should be closed
and the closing screws should be fixed tightly.
e. The gasket in the terminal box cover
should be clean and tightly sealed to the cover.
f. The condition of all gaskets should be in
accordance to protective regulations.
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