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UNITED EQUIPMENT
SALES CONSULTING CORPORATION
TESTING FOR AUTOMATIC CHANGE OVER (CAN BE PERFORMED FOR EITHER GAS)
1. Make sure the pressure is stable and the line pressures reads 50 psi (pushing the Bleed Valves on all
cylinders will make certain the lines are stable). Once this has been confirmed, close the cylinder valve
that is represented by the green LED.
2. Push the Bleed Valve on the same side as the closed cylinder, allowing the cylinder pressure to drop.
Once the pressure gets below the low set-point, the system will change over to the reserve tank
previously represented by the yellow LED. The closed cylinder will show a red Empty LED and the In Use
cylinder will show a green LED.
3. An alarm will sound on both the manifold as well as the RAC. You can mute the alarm using the Mute
button.
4. Return the system to normal by S-L-O-W-L-Y opening the closed cylinder. Pressure will return to normal
and the Empty cylinder will then be represented by a yellow Reserve LED.
Bleed Valves
Line Bleed Valves
TESTING
