Pentair Hydromatic SPD50H Manuel D'utilisation page 6

MAINTENANCE & REPAIR
SPD50H
SPD100H
6
7. Ground check on stator should be performed using
ohmmeter with scale set at R x 100 and checking 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. Always make this test with the meter when scale
pointer is set to a new scale before making any checks on
the motor. Now connect one meter lead to one terminal of
stator and touch and other meter lead to motor stator shell.
If needle on ohmmeter goes completely to zero, the motor
probably has a wire touching the stator at some point and
the motor assembly will have to be replaced.
8. Winding resistance test should be performed if the ground
test is satisfactory. 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 test before making a reading
of the winding. Connect one motor lead to the white wire
terminal and the other meter lead to the black wire terminal.
This reading is for the main winding. If the readings
obtained do not agree with those given below, the stator
is defective and the motor assembly must be replaced.
Reconnect the wires as they were removed.
SPD50H
1Ø
1Ø MAIN
START
115V 6 .53 1 .90
230V 6 .53 3 .80
460V -- --
9. For three phase pumps, remove the power cord assembly
(#22) by cutting the butt connection and wire nuts (#32) and
remove the power cord from the pump.
10. Twist the three leads of one end of the power cord together.
Then at the other end, with an ohmmeter, check any two
leads. Also check the third lead with either of the first two.
If a zero reading is indicated for any wire, the wire is broken
and a new power cord assembly must be ordered.
11. If the winding is grounded, remove the pipe plug in the top
of the pump and drain the oil into a clear container. A milky
appearance to the oil will indicate that water has entered
through worn or damaged seals or O-rings. If this is the
case, the mechanical seals and all O-rings will have to be
replaced.
RESISTANCE
SPD100H
3Ø 1Ø 1Ø
BAL. START MAIN BAL.
-- -- --
-- 5 .06 3 .06
-- -- --
W-03-193 (10-15-22)
3Ø
--
9 .7
9 .7