Pump Servicing - Pentair Pool Products HYDROMATIC SP50 Installation And Service Manual

Pump
Servicing
Read the following instructions
carefully before replacing any
parts. Reasonable care and safe
methods should be practiced.
Check local codes
requirements before installation.
Only competent
should make the installations.
Servicing should be performed
only by knowledgeable pump
service contractor or authorized
service station.
Remove from power source.
WARNING: Shock hazard.
1. Checking power cord. To be
sure wires are not burned off or
broken in cord, use ohmmeter
to check. Set ohmmeter scale
pointer to R X 1 scale and
attach one meter lead to white
cord wire and one meter lead
to black cord lead, then place
screwdriver blade across blade
terminals of plug. If cord is
OK, meter needle will go to
zero and stay there. If meter
needle does not move, this will
indicate an open wire and cord
must be replaced.
2. Checking motor operation.
When switch cap is off and
switch is removed, connect
two terminals
connected to switch together
and tape. Plug power cord in
power receptacle to check
motor operation. Motor should
start and run smoothly. If
motor does not start, pump
must be dismantled
motor checked.
4
CAUTION:
unplug cord before continuing
or reassembly
is functional.
3. Checking motor stator. If
motor does not run when tested
as described above, the stator
must be removed from the
and
housing and checked. Remove
plug (12) from top of housing,
electrician
and pour oil in container,
preferably glass, so that oil can
be observed.
If oil is clear it will indicate
motor is not burned and there
has been no water leaking into
the motor. If oil is cloudy or
black, it will indicate water in
the motor or a burned stator.
After draining oil, remove
bolts (10) and remove cord nut
(25) from motor cord (21).
Remove rubber seal ring from
around cord. Turn cord and lift
up until seal ring (26) is
removed. Pry between ears of
housing (24) to remove from
base. Disconnect motor cord
from stator and remove bolts
(2) and plate. Lift stator from
base. If stator is visibly burned,
it must be replaced. If stator is
not burned but the oil shows
that were
and
Be sure to
if pump
4. Ground check. Set ohmmeter
Performance Curve
signs of water, stator can
be checked with the ohmmeter
to see if it can be reused.
scale pointer to R X 100K
scale and check meter by
putting both meter leads
together and adjusting the
needle knob until meter reads
zero. If meter cannot be
adjusted to zero it will indicate
that batteries in meter must be
replaced.
Check meter to zero and adjust
if necessary before making
any checks on motor.
Now connect one meter lead
to one blade terminal of stator
and touch other meter lead to
motor stator shell. If needle
reads below 5 (500,000 ohms)
stator must be dried out before
rechecking. To dry out, place
motor in 220 degree oven for
four hours. Recheck after
motor cools. If motor is new
or thoroughly dry, needle of
ohmmeter will not move on
the ground check:
indicates a reading of 50
megohms or higher. One
megohm is one million ohms.
This