2-9. NIGHTSIDE TEST BENCH 2A3 CONTROLS AND INDICATORS (cont)
PNEUMATIC CONTROL PANEL
Control or Indicator
Filter Water Drain
Air Supply Valve Lever
Indicates air pressure at each isolator.
Indicates air pressure at output side of pressure
Adjusts air pressure to isolators. Turn clockwise to
Pull down red ring to allow control
knob to turn.
After completing air
pressure adjustment, lock control
knob by pushing up red ring.
Bleeds down system pressure and drains water from filter
Blocks air supply from control panel. Lever in
horizontal position turns air off.