Use and Care Manual
Service Manual 29
Commercial Disposers
Problem Cause Solution
Grinding elements worn excessively. Disposer undersized for application. Replace disposer with correct size. See “Serial Num-
ber Date Code” on page 2.
Large amounts of highly abrasive
material ground regularly.
Replace rotating shredder and/or stationary shredder.
See “Replacing Stationary Shredder” on page 11 and
“Replacing Rotating Shredder” on page 12.
Do not grind abrasive material such as glass, crock-
ery, ceramic, or clam shells.
Non-biodegradable material ground. Replace rotating shredder. See “Replacing Rotating
Shredder” on page 12.
Do not grind non-biodegradable material.
Excessive water entering disposer. Adjust water to recommended gallons per minute
(GPM). See “Cold Water Flow & Drain Line Diameter”
on page 3.
Disposer does not grind food waste. Insufcient grind time. Do not turn unit off until all food waste has been
ground and ushed away. Allow water to run for 3
minutes after grinding is complete.
Grinding elements worn. Replace rotating shredder and/or stationary. See See
“Replacing Rotating Shredder” on page 12 and “Re-
placing Rotating Shredder” on page 12.
Stationary shredder teeth plugged. Disconnect power from disposer and clean stationary
shredder grinder teeth.
High drain time/too much water. Restriction to waste line downstream of disposer.
Clear clog.
Disposer runs only when bypassing
electrical controls.
Inoperable or improperly installed
controls.
Reference control wiring diagrams and rewire accord-
ingly or replace if inoperable.