Labrie Pendpac WITTKE RETRO FL, Maintenance Manual

Page: 96 / 130

86
Maintenance
How the Pneumatic System Works
The Pneumatic system includes:
Š
Air Supply
Š
Filtering System
Š
Controls
Š
Valve Box and Air Valves
Š
Air Actuators
Air supply
Air is drawn from the chassis air tank, passes through an air and mist filter system and into the valve
box. The system runs at approximately 120 psi. For additional information, consult your chassis
OEM.
Figure 3-25 Chassis air tanks with 90 psi check valve highlighted
Filter system
The chassis air supply is filtered before it is used in the packer control circuit. Two filters are fitted
behind the cab. Air supply is passed through an air filter, a mist separator and then routed to the air
valve box.
N
OTE
:
Filter elements should be replaced as per the Maintenance Schedule guidelines (see
Maintenance Checklist on page 50).
The filter bowls and chassis air tanks must be manually drained daily to remove moisture.
I
MPORTANT
: Poorly maintained pneumatic control systems are a major cause of packer control failure.
In-Line Lubricator (optional)
Recommended for use in cold and dry climates, the optional lubricator is fitted in line after the mist
separator. It is filled with air tool oil which is bled into the system to ensure adequate lubrication.