USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 32
September 2004
SECTION 4:
MAINTENANCE
Advice: In order to ensure continuous and trouble-free operation, a
maintenance contract with
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4.1
SUGGESTED PREVENTIVE MAINTENANCE SCHEDULE
4.1.1
Introduction
The Series HC compressed air dryer requires a minimum of maintenance as
most components are "maintenance-free". However, a certain amount of
"preventive maintenance" is recommended to assure years of trouble-free, high-
performance service.
4.1.2
Periodic Maintenance Schedule
Whereas it is recommended that the dryer be observed and inspected as often
as it is practical, the following is a minimum requirement:
A. EVERY 2000 HOURS OR 3 MONTHS
1. Check the inlet air temperature; make adjustments, if necessary.
2. Check the air temperature at intercooler outlet; above 100
°
F means:
a. Increase the cooling water flow.
b. Lower the cooling water temperature.
c. Back flush and thoroughly clean the intercooler, to restore efficiency.
3. "Blow off" the vessel relief valves to assure their integrity.
4. Test the drain trap assembly and drain the sump at the separator drain of
sludge that may have accumulated by closing off the primary drain until
the secondary valve actuates.
All of the above can be accomplished while the dryer is operating.
B. EVERY 4000 HOURS OR 6 MONTHS
1. Perform steps 1 through 4 as outlined in "Every 2000 Hours or 3 Months".
