19
At Demco we exercise great care in building and packaging your unit. All operating units are
thoroughly bench tested before being shipped. We encourage you to contact our Help Line
any time you have questions about the installation or operation of your Demco Vacuum-
Assisted Brake.
VACUUM/AIR
Vacuum Pump will not shut off:
Check to see that the breakaway pin is secure.
1.
If the pump continues to run call the Help Line 800.543.3626.
2.
Actuator not moving brake pedal:
Check cable tension (Step 6).
1.
Remove actuator air line and check for pressure. If there is no/weak pressure check line
2.
for a pinch, kink, or puncture.
If no issue is found call the Help Line 800.543.3626.
3.
WIRING
Check the fuse and the holder at the battery and the WHITE wire connection. Also, be sure
that the 20-amp fuse is installed in the fuse holder.
Unit failed to operate when the RV brakes were applied:
Be sure the toggle switch is in the on position. Using a voltmeter or a test light, determine
1.
if there is 12v (+) between the brown wire and the black ground wire at the Operating
Unit. There should be 12v (+) between these two wires at all times, when the switch is
on.
Check the orientation of the G-Force Controller. It may need to be tipped slightly
2.
forward.
Check continuity from the white wire to the frame. If there isn’t continuity, reground the
3.
white wire to the frame of the towed vehicle.
Troubleshooting
Stay-In-Play Stay-IN-Play Duo Installation
