6.1
GENERAL
As you proceed in reading this section, it will be easy to 
see that the Maintenance Program for the air compressor 
is quite simple. The use of the service indicators provided 
for the fluid filter, air filter and fluid separator will alert you 
when service maintenance is required. When the WS 
Controller display indicates service, maintenance for that 
specific item is required. See instructions for each item in 
Filter Maintenance, on page 62.
6.2
DAILY OPERATION
Prior to starting the compressor, it is necessary to check 
the fluid level in the receiver tank . Should the level be low, 
simply add the necessary amount. If the addition of fluid 
becomes too frequent, a simple problem has developed 
which is causing this excessive loss. See the 
Troubleshooting Guide Section under EXCESSIVE 
COMPRESSOR FLUID CONSUMPTION for a probable 
cause and remedy.
 WARNING
HIGH-PRESSURE HAZARD!
• DO NOT remove caps, plugs, and/or 
other components when 
compressor is running or 
pressurized. Stop compressor and 
relieve all internal pressure before 
doing so.
• Failure to comply could result in 
death or serious injury.
After a routine start has been made, observe the controller 
display and be sure it monitors the correct readings for 
their particular phase of operation. After the compressor 
has warmed up, it is recommended that a general check 
on the overall compressor be made to assure that the 
compressor is running properly.
6.3
MAINTENANCE AFTER INITIAL 
50 HOURS OF OPERATION
After the initial 50 hours of operation, a few maintenance 
requirements are needed to clean the system of any 
foreign materials. Perform the following maintenance 
operations to prevent unnecessary problems:
1. Clean the return line strainer. Refer to Maintenance 
Every 2000 Hours on page 62 for location.
2. Clean the return line orifice.
®SULLAIR®
Section 6
MAINTENANCE
®SULLAIR®
3000-4500 Operator’s Manual and Parts List
61