Fristam Pumps FP Series, Instruction And Maintenance Manual, Page: 15 / 32

Fristam FP/FPX Series Pump
15
1265000079
12/9/02
Figure 24
M
OTOR
R
EPLACEMENT
- R
EMOVAL
Loosen the motor bolts (28) with a wrench and remove the bolts and lock washers (27) that pass
through the flange support (2) and thread into the C-face of the motor. For 324 and 326 TSD frame
motors, use two wrenches to remove the bolts and lock washers that pass through the flange support
and thread into the D-face motor.
Remove the flange support (2) from the motor (1). Take care to support the weight of the motor as you
remove the flange support. Stand the motor on the fan guard if possible.
M
OTOR
R
EPLACEMENT
- A
SSEMbLY TO ThE
F
LANGE
S
UPPORT
If you have replaced the motor, clean off the motor face of the flange support (2). Place the flange sup-
port on the new motor, replace the motor bolts (28) and lock washers (27). Tighten the motor bolts to
to the appropriate torque (see page 5).
For motor frame sizes up to and including 286 TC: The four hex bolts (28) with lock washers (27) are
placed through the holes in the flange support then threaded into the tapped holes on the C-face of the
motor.
For 324 and 326 TSD motors: The four hex bolts (28) are placed through the holes on the flange sup-
port and motor then fasten with a lock washer (27) and nut (38) .
Tighten the motor bolts to the proper torque (see page 4).
A
SSEMbLING ThE
P
UMP ShAFT ONTO ThE
M
OTOR
S
hAFT
Note: when replacing the shaft, replace the shaft collar at the same time.
a) Slide the new shaft collar onto the pump shaft, do not tighten the shaft collar screw at this time.
Note: align the slot of the clamping ring directly over the slot on the shaft.
b) Slide the pump shaft and shaft collar onto the motor shaft with the hole in the pump shaft aligned
with the key in the motor shaft.
c) Do not tighten the shaft collar screw yet. You must first set the impeller gap.
S
ETTING ThE
I
MPELLER
G
AP
If you have removed the pump shaft from the motor shaft for any reason (such as replacing the shaft or
motor), you must re-set the gap.
The gap is measured between the impeller and pump housing using feeler gauges. (Note: Due to polish-
ing and balancing the impeller, the gap behind each impeller blade may vary. The gap should be checked
behind each blade and the smallest value should be used as your gap setting.) The correct gap dimensions
are listed on pages 4-5.
a) SINGLE FLANGE: Assemble the pump housing (without the sta-
tionary seal) onto the flange support. Make sure that the shoulder
of the pump housing bottoms out against the flange support.
Tighten the clamping bolt in the flange support. Note: make
sure the housing is level or in line with the piping.
DOUBLE FLANGE: place the original housing shim, if sup-
plied, with the pump and the pump housing (less the station-
ary seal) on the flange support. Bolt the housing in place.
b) Place the front seal driver and the impeller key onto the shaft ( Figure 24 ).
c) Place the impeller onto the shaft. Thread the impeller nut onto the shaft and tighten.