Control System Pneumatic Pressure Switch - Wittke STARLIGHT Maintenance Manual

Pneumatic System 73
Take note of the following:
 All air tanks should be drained daily.
 Be sure to drain the wet tank first.
 Poorly maintained pneumatic control systems are a major cause of packer control failure.
 Your air drain cocks may differ slightly from those illustrated above.

Control System Pneumatic Pressure Switch

All W ™ products with a pneumatically-controlled hydraulic valve incorporate an air pressure
ITTKE
switch to provide confirmation that adequate air pressure is available to engage the hydraulics. This is
located inside the pneumatic valve box, on the MAC valve manifold, and is a normally open switch
that closes at 90 PSI. When this switch closes, a 12 volt (+) signal is sent to the control system.