70
b) POSSIBLE SOLUTIONS
1b) Visually check that the fan (Blower) rotate in the direction of its arrow.
• If rotation is incorrect:
• Check rotation of the main fan blower ...
If the motor direction is wrong, swap phase 1 and phase 2 of the incoming power in the main
electrical enclosure.
• Retest
2b) Check the lint chamber air pressure switch. Check the lint chamber pressure switch with control
voltage “OFF”. Open disconnects on TB1-20 and TB1-21, and check resistance across the outputs
of these two (2) connectors. (Refer to ADG-464 Main Panel Wiring Diagram). This will verify that
the switch is open when the dryer is “OFF”. Check the lint chamber switch during a “DRYING
CYCLE” close the disconnects on TB1-20 and TB1-21, and measure 110 VAC between TB1-9 and
TB1-21 during a “DRYING CYCLE.”
• If 110 VAC is measured the switch is functioning OK.
• If 110 VAC “IS NOT” present;
• Check switch’s pressure adjustment (refer to AD-464 Ladder Diagram for reference)
• Check that switch cover is in place and screws are snug.
• Check that lint screen is clean.
• Check that wiring; refer to following wiring diagrams:
• AD-464 Base Junction Box Wiring Diagram
• AD-464 Main Panel Wiring Diagram
6. “HI-TEMP FAULT” Message
PLC (Programmable Logic Controller)
MESSAGE “HI-TEMP FAULT”
a) PROBABLE CAUSES;
1a) Air Flow
2a) Hi-Limit Temperature Controllers (channel 1, 2, 3 gas systems)
3a) RTD (Resistive Temperature Device) 1, 2 or 3 gas systems.
4a) Fuse #10
