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Solution
Clean or replace the process filter.
Replace any worn or damaged hoses.
Tighten all hose clamps to eliminate
leaks.
Remove any obstructions in the process
air circuit.
Verify the process blower is running in
the correct direction. If backwards,
reverse direction by switching any 2 legs
of high voltage to the motor.
Repair or replace motor.
Other than running out of material to
complete a job, the material level inside
the hopper must be a minimum of 50%
full. If the hopper is not at least half full,
the material in the cone section will not
get adequate air flow to dry properly.
WARNING:
Any electrical
checks should be performed by
a qualified electrician.
6-32
l Tr o u b l e s h o o t i n g
Poor Material Dr ying
Troubleshooting
(continued)
Air flow
- The air flow in the process drying circuit must be adequate to carry and
distribute the heat throughout the entire bed of material inside the hopper. If the air
flow is too low, the material in the center of the hopper may get heated fully to the
drying temperature, but the material against the sidewalls will not. In most cases,
the material 2/3 to 3/4 of the way toward the top of the hopper should be heated to
the proper drying temperature.
Problem
Too much or too little air
flow.
Possible cause
Dirty process air filter.
Collapsed hoses or holes/leaks in the
hoses and hose connection.
Air flow restrictions.
Process blower running backwards or
performing poorly.
Material level in the hopper too low.
NOTE:
If there is too
much air flow, the materi-
al may fluidize inside the
hopper, resulting in incon-
sistent material flow
through the hopper, which
can negatively impact
residence time.
✐
Summary of Contents for HTC 120
Page 10: ...viii l Table of Contents ...
Page 30: ...2 14 l Description ...
Page 35: ...Installation General Installation General l 3 5 3 I n s t a l l a t i o n ...
Page 65: ...Installation Hard Piping Kits Installation Piping Hoses l 3 35 3 I n s t a l l a t i o n ...
Page 80: ...3 50 l Installation Piping Hoses ...
Page 88: ...3 58 l Installation Piping Hoses ...
Page 92: ...3 62 l Installation Conveying Lines ...
Page 93: ...Installation Water Lines 3 I n s t a l l a t i o n Installation Water Lines l 3 63 ...
Page 124: ...3 94 l Installation Gas Piping and Exhaust Flue ...
Page 125: ...Installation Testing 3 I n s t a l l a t i o n Installation Testing l 3 95 ...
Page 250: ...4 108 l Operation ...
Page 286: ...5 36 l Maintenance ...