Air Manifold

[dale farley]

Can someone tell me what the adjustments on the bottom of my air manifold are for. In the picture there are 12 of the adjustments with an aluminum hex nut and an adjusting screw in the center. I assume they are to adjust the pressure on the "in" and "out" sides of each switch, but I'm not sure. I thought I might be able to turn both adjustments off and prevent air going through the solenoid valve, but that's doesn't seem to be the case.

Manifold-1.jpg

[Gil_J]

Dale,

I believe those adjust the air flow rate, not the pressure.

[Joe Camper]

2 pocket doors a step slide an air seat and a bed lift. Right?

What was your thought process by wanting to completely shut them off?

[dale farley]

Joe, This manifold controls my step slide, bumper release, sun visors, slide locking pins, entry step, etc. The other things you mentioned are on another manifold. I was trying to isolate a leak, and I thought if the adjustment screws stopped all air to an item, I could turn them all off and determine where the leak was by turning them back on or off, one at a time.

[dale farley]

Gil,

There are 9 of the Solenoid Valves on this 10 station manifold. I can hear air leaking from at least one of the valves. (I took the valve off and put some gasket seal on it, but that made no difference.) I assume if I am hearing air at the valve, that means there is either a leak at the seal where the valve attaches to the manifold or there is an internal leak letting air bleed out through the line. I also assume there should be no air leave the manifold until one of the solenoids is activated? I disconnected the supply line to that manifold and reduced the leak to a fraction of what it was, so I know there is a problem related to that manifold. I also assume if there was a leak at the air piston, that would only leak when the solenoid was activated and would not cause a chronic leaking problem.

[Gil_J]

Dale,

The control valves for bidirectional devices, such as those controlled through this manifold, should have air supplied to the devices at all times. The solenoid simply controls which of the 2 hoses going to the device is being supplied air. The solenoid control valve should also open one of the two hoses to an exhaust port on that manifold.

It may be difficult to determine if a port is malfunctioning on the manifold without disconnecting the two lines feeding the device in question. The reason being is that the air ram supporting a device may have an internal leak that can result in a constant exhaust at the manifold.