Operation; Maintenance; Using An Ohmmeter; Repair - Motor - Pentair HYDROMATIC SKHD150 Installation Et Manuel De L'opérateur

Operation • Maintenance

Operation

NOTICE: Do not allow pump to run in a dry sump.
Doing so will void the warranty and may damage
the pump.
An automatic overload protector in the motor will
protect the motor from burning out due to overheating/
overloading. When the motor cools down, the overload
protector will automatically reset.
If overload trips frequently, check for the cause. It could
be a stuck impeller, wrong/low voltage, or electrical
failure in motor. If an electrical failure in the motor is
suspected, have it serviced by a competent repairman.

Maintenance

Read the following instructions carefully before replacing
any parts. Reasonable care and safe methods should be
practiced. Check local codes and requirements before
installation. Only a competent plumber or electrician
should make the installations.
Submerge pump in a disinfectant solution (dilute chlorine
bleach) for at least one hour before disassembling pump.
Check for an obstruction in the impeller by looking
through the suction hole of the pump. The shaft should
turn freely if unobstructed. Keep fingers, clothing or any
material from suction inlet.
The steps described in this section should be performed
only by an authorized service center.
NOTICE: Read all directions before replacing any
parts. Always remove pump from power source
before servicing.
The numbers in parentheses, such as "(3)" or "(16)", refer
to item numbers used on the Repair Parts diagram.

Using an ohmmeter

To be sure wires are not burned off or broken, use an
ohmmeter to perform resistance checks. Set ohmmeter
scale to R X 1 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, the
batteries in meter must be replaced.
NOTICE: Always reset meter to zero [0] when going to a
new scale before making any measurements.
If wire is OK, meter needle will go to near zero and stay
there. If meter needle does not move, the wire has an
open and the wire must be repaired or replaced.
Repair – Motor:
Hazardous voltage - risk of electrical
shock. Be certain power to pump is off! Disconnect
pump power cord from terminals and remove pump from
sump pit.
1. If motor does not run when the pump is tested, the
capacitor and/or stator must be checked. See Step 4.
2. Remove plug (9) from top of housing (2) and pour
oil into a clean glass container. If oil is clear, it
will indicate motor is not burned and there has
been no water leak into the motor. If oil is black,
it will indicate a burned stator. If oil is cloudy, it
will indicate water in motor oil, so all seals should
be replaced.
3. After draining oil, carefully loosen the power cord
assembly from the motor housing. With power cord
loose, remove the screws (7) and carefully lift off the
motor housing (2) exposing the capacitor (3, single
phase [1ø] only) and the motor assembly (5).
4. On 1ø units, check capacitor (3) using ohmmeter.
With ohmmeter scale set at R X 1000, attach meter
leads to capacitor. The meter needle should go
to zero and come back slowly. If it does not, the
capacitor should be replaced.
5. To check motor stator, remove power cord leads
from terminal bushings on top of motor. If stator is
visibly burned, motor assembly must be replaced.
6. Ground check on stator should be performed using
ohmmeter with scale set at R X 100. Connect one
meter lead to one terminal of stator and touch other
meter lead to motor stator shell. A zero reading
indicates a direct short, and the stator will have to
be replaced.
7. A winding resistance test should be performed if the
ground test is satisfactory. Use ohmmeter with scale
set at R X 1. Connect one meter lead to the white
wire terminal and the other meter lead to the black
wire terminal. This reading is for the main winding
(1ø). If the readings obtained do not agree with those
given below, consult the factory.
Pump Voltage 1ø Start Winding
230 V 3.53 Ω
460 V -
200 V -
575 V -
Winding Resistance Chart
5
1ø Run Winding 3ø Bal.
1.78 Ω 6.65 Ω
- 6.65 Ω
- 3.4 Ω
- 27.97 Ω