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Location and mounting of the HTC heater assembly
models 180 and 270. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Connecting the HTC heater assembly to the dryer or blower
and hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Installing the isolation valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Connecting the power on models HTC 180 and 270 . . . . . . . . . . . . 3-8
Connecting the control wires on models HTC 180 and 270. . . . . . 3-10
Connecting the RTD sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Testing the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
4-1 Operation
The HTC process air heater: control panel DC . . . . . . . . . . . . . . . . . 4-2
HTC DC control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Control function flow charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Control function descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
HTC DC control alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Initial operation (for HAD only). . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Initial operation (for Carousel Plus dryer HTC) . . . . . . . . . . . . . . . . 4-21
Autotuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Normal operation to start heating . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Normal operation to stop heating . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
5-1 Maintenance
Preventative maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6-1 Troubleshooting
Before beginning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
A few words of caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
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