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Page Title:
Removal and Replacement of V-Belt |
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 replace the stuffing box gland bolts and
(5) Tighten the unions; then tighten the
nuts (11). Tighten the nuts to seat the
centrifugal pump mounting bolts (19).
packing, and then loosen until the shaft
Caution
can be turned easily by hand. Force
If pulleys do Dot align with each other
Lubricating Oil, General Purpose (LO) into
or If the V-belt Is too loose, make the
the stuffing box by rotating the cap of the
adjustments with the ac motor
grease cup (13) several turns.
mounting bolts (17) (para 7b (2) ).
(8) With the collar setscrews (17) loose in the
(6) Insert the ac power cable plug (26) into the
ball bearing with collar (16), move the
power source receptacle.
shaft until the impeller (2) touches the
support head (12). Move the shaft until
9.
Removal
and
Replacement
of
Electrical
the impeller (2) just turns freely without
Switch Timer
rubbing on the support head (12). Position
the collar setscrews (17) over the flats on
With the exception of replacing the control knob (4,
the shaft and tighten the setscrews. Turn
the shaft by hand several times to be
required. To replace an electrical switch timer, use the
certain that it turns freely without the
procedures in a and b below.
impeller rubbing. Readjust if necessary.
(9) Coat the casing gasket (6) with oil (LO),
a. Removal. Remove the screws that hold the
and install it between the casing (1) and
electrical switch timer to the case. Remove the electrical
the support head (12). Position the casing
wires from the electrical switch timer terminals and
(1) and secure it with the casing
remove the electrical switch timer.
capscrews (4).
b. Replacement. To replace the electrical switch
(10) Check to see that the shaft (3) moves
timer, reverse the procedures given in a above.
freely. If it does not, reset the position of
the shaft with the collar setscrews ((8)
10.
Removal and Replacement of V-Belt
above).
a. Removal.
(1) Mount the centrifugal pump pulley (28) on
the centrifugal pump shaft and tighten the
(1) Pull the ac power cable plug (26, fig. 2)
pulley setscrew (29).
from the power source.
(2) Mount the centrifugal pump in position (18)
(2) Loosen the ac motor mounting bolts (17).
and stretch the V-belt (25) between the ac
(3) Slip the V-belt (25) off the ac motor pulley
motor pulley (27) and centrifugal pump
(27) and the centrifugal pump pulley (28).
pulley (28).
Temporarily tighten the
centrifugal pump mounting bolts (19).
b. Replacement.
(3) Install the intake nipple (32) and outlet
nipple (33) in the centrifugal pump.
(1) Install the V-belt (25) on both pulleys.
Caution:
(2) Align the ac motor pulley (27) with the
Be careful not to crack the centrifugal
centrifugal pump pulley (28) and tighten
pump by overtightening the nipples.
the V -belt by sliding the ac motor (16)
away from the centrifugal pump. Tighten
(4) Loosen the centrifugal pump mounting
the ac motor mounting bolts (17).
bolts (19) and align the mating parts of the
Caution:
intake union (20) and outlet union (21).
Do not adjust the V-belt tension by
attempting
to
reposition
the
centrifugal pump.
(3) Insert the ac power cable plug (26) into the
ac power source.
7
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