Jackson MSC JP-24F, Service Manual

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SERVICE PROCEDURES continued
3. To replace the pump motor assembly, pump seal, capacitor or impeller
Capacitor Start, Built-in Overload Protection. Marathon Jet Pump Assembly, 3450 RPM, 3/4 HP, 60 HZ, 1 PH,
115V/230V, FLA 8.8/4.4 AMPS, SPA 10.6/5.3 AMPS, ROTATION - CLOCKWISE. Mechanical Shaft Seal -
Standard Self-adjusting Shaft Seal (EPT Mechanical Seal) White Ceramic Seat and Carbon Seal Face.
Permanently Lubricated Ball Bearings. Direction o rotation should match the molded arrow on the pump
housing.
Motor has a capacitor start circuit controlled by a centrifugal switch. Once the start windings in the motor
have rotated the rotor to the proper running speed/rpm, the centrifugal switch opens and drops out the
capacitor. The main windings will then keep the motor running at run rpm.
Most problems can be found in either the capacitor or centrifugal switch.
A. To check the capacitor with an ohmmeter or substitute with good capacitor. WARNING:
Discharge capacitor before testing with ohmmeter.
Steps:
(1) Disconnect power to dishwasher and unplug wire leads from capacitor. Use appropriate range
on ohmmeter.
(2) If the capacitor is good, the meter should go to the right and then decrease slowly.
(3) If the capacitor is shorted, the meter should go to the right and stay there.
(4) If the capacitor is open, the meter should not read anything.
B. To replace the pump motor assembly.