Pentair Hydromatic SP50, Руководство пользователя

Страница: 5 / 12

probability has a wire touching
the stator shell at some point
and the stator will have to
be replaced.
5. Winding resistance test. if
motor shows a satisfactory
ground check then the winding
resistance must be checked.
Use ohmmeter with scale
pointer set on r X 1 scale. on
this scale, meter reads directly
on ohms. always check the
meter with leads together
as described above, under
ground check, before making
a reading on the winding.
connect one meter lead to
the terminal with the brown
wire connected underneath
the terminal board. connect
the other lead to the terminal
housing with the blue wire.
meter should read 1.2 to 1.4
ohms; this is the resistance of
the main winding for a 115
volt stator. This reading for
a 230 volt stator should be 4.8
to 5.9 ohms. Now connect one
meter lead to the brown wire
terminal and the other meter
lead to the red wire beneath
the terminal board. The meter
should read 3.8 to 5.4 ohms
for a 110 volt stator. For a 230
volt stator this reading should
be 16 to 21 ohms. This is the
resistance of the start winding.
Now connect one meter lead to
the red wire and one to the blue
wire. The meter reading should
be the sum of the other two
readings or 5.0 to 6.8 ohms
for a 115 volt stator or 20.8 to
26.9 ohms for a 230 volt stator.
if the readings obtained do not
agree with those given, the stator is
defective and must be replaced.
6. replacing seal. if water is
found in motor, seal must
be replaced. remove bottom
casting (5). Place screwdriver
in shaft slot and tap impeller
(6) lightly with hammer to
unscrew. Use cloth on impeller
to prevent cutting hand. Tap on
end of shaft with a plastic or
rubber hammer. This will push
seal (8,9) from shaft. clean
case thoroughly; all sand and
dirt must be removed. remove
stationary ceramic seat of
seal from housing. Push new
ceramic seat into housing. Use
Parker o-ring lube on rubber
ring. replace rotor in housing.
Use care in putting shaft
through ceramic seat to be
sure it is not chipped. inspect
seal after shaft is in place. if
seal has been chipped it must
be replaced. do not replace
rotating part of seal until
the balance of the pump
is assembled.
7. Bearings. When the pump
rotor has been removed, check
bearings before replacing. if
bearings are rusted or rough
when turned, they must be
replaced. Pull bearings with
a bearing puller. if puller
cannot be replaced over lower
bearing, remove the outer race
by cracking in a vise. after
outer race is cracked, it can be
removed and the balls can be
removed. This will allow inner
race to be pulled.
When replacing bearings push
only on inner race. if a press is
not available, bearings can be
tapped on, using a sleeve that
bears only on the inner race.
Never pound on the outer race
or bearing will be ruined.
8. reassembly of stator and
housing. replace stator (20)
with terminal block turned
toward switch pocket as shown
by drawing. replace plate and
bolts (2). Be sure ears on plate
are in place inside of shell of
stator.
replace cord (21) with push on
terminals in place on terminal
block. Bend tabs of push on
connectors down so that they
cannot touch plate or housing.
Place wire in straight up
position so that housing (24)
can be replaced over wire.
Be sure bearing load springs
are in place in housing before
replacing housing. Hold springs
in place in housing with o-ring
lube, or other heavy grease. Be
sure rubber ring (3) is in place
on case when lowering housing
into place. Tap down on top of
housing with plastic or rubber
hammer to seat over bearing.
replace screws (10) and
tighten evenly from one side
to the other until housing is
firmly in place. at this point
turn shaft to be sure rotor
is free. if rotor binds, it
indicates screws are not
tightened evenly.
Push rubber seal ring (26)
around cord and replace cord
nut (25). Tighten cord nut
tight. Nut must be tight enough
so that cord cannot be pulled
up. Put cord into switch cap
and secure with rubber ring
and nut. replace switch as
described earlier.
Now replace rotating part of
seal (8). Use tapered installing
sleeve furnished with seal to
push over shaft threads. Screw
impeller (6) onto shaft. Hold
shaft with screwdriver in slot
to tighten on impeller. replace
bottom casting (5).
5