Specifications

WARNING:
BEFORE MAINTENANCE OF DRYER ALWAYS SHUT DRYER OFF,
DISCONNECT THE ELECTRICAL SUPPLY, AND DEPRESSURIZE
THE PNEUMATIC SYSTEM TO AVOID PERSONAL INJURY
Maintenance
Prefilters and Afterfilters
VOLTAGE SEQUENCE
Solenoid Valves
Timer
Periodically clean entire solenoid valve block. If any of the normally closed solenoid valves fail to
operate, use the air flow diagram below to check operation, and then check the following:
1. Control Voltage - Check the outlet voltage sequence from the circuit board to verify that
the solenoid is receiving electric voltage.
2. Burned out solenoid cell
3. High/low voltage - Voltage should be plus or minus 10% of nameplate reading.
4. Solenoid valve leaking - Disassemble, clean and repack or replace.
Should the sequencing of towers fail, first check the red light marked “Status” located on the timer
circuit board. When blinking, the timer board is energized. If the light is not blinking, check the
voltage across the 3 Amp 3 AG fuse located on the board. Replace fuse if “blown”. If fuse is not
“blown” check voltage sequence to the appropriate solenoid valve.
13
Right N.O. Inlet Valve J5 Pin #4
Right N.C. Inlet Valve J5 Pin #3
Left N.O. Inlet Valve J5 Pin #9
Left N.C. Inlet Valve J5 Pin #8
0 Min
5 Min 10 Min
120 Voltage
0 Voltage
15 sec.
4:15 min.
5:15 min. 9:15 min.
Note: For maximum filtration efficiency service elements and
drains according to manufacturer’s recommended schedule.