USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 33
September 2004
SECTION 4:
(Continued)
2. Isolate and depressurize the dryer.
3. Disconnect power to the dryer.
4. Replace afterfilter elements (the proper number and quantity is indicated
on the filter and in the Spare Parts List in Section V of this manual).
5. Make certain all air and electrical connections are sound.
6. Repressurize the dryer and place "on stream".
7. Reconnect power to the dryer.
C. EVERY 8000 HOURS OR 12 MONTHS
1. Perform steps 1 through 4 as outlined in "Every 4000 Hours or 6 Months".
DO NOT REPRESSURIZE DRYER OR RECONNECT POWER
TO THE DRYER YET!
2. Rebuild the actuators by installing repair kits in the major switching valves.
(V1-V13 and V15)
3. Carefully disassemble and clean the solenoid valves in the control group;
rebuild with new parts only if damage or serious wear is evident.
4. Carefully disassemble and clean the 3-way solenoid valve on the
separator drain trap.
5. Rebuild the secondary drain valve by installing a valve repair kit.
(SD - P/N 38341285)
6. Disassemble and clean the primary drain. (FT)
7. It is recommended that the aftercooler be back-flushed and thoroughly
cleaned, both tubeside and shellside, at 8,000 hours; but this interval
should be adjusted shorter or longer, based on water quality and plant
experience.
