SECTION 4
NO FLOW CHECK PROCEDURE
NO FLOW ZONE Check for air sample tube blockage.
NO FLOW PURGE Check for blockage of purge line. Verify that the purge line does not exceed 100’ in length.
NO FLOW ZONE AND NO FLOW PURGE Check the water trap. If full of water, drain and
NOTE_ Go to the diagnostic screen and view the “PRESS”, “VAC” and “AMB” values. I “PRESS” equals “VAC”; there is a blockage in the pneumatic system. If “PRESS”, “VAC” and “AMB” are all equal at about 14.0 PSIA then there is a leak in the pneumatic system.
If “AMB” is below “PRESS”, disconnect the purge line and force a pressure check. If “AMB” is now correct the problem is in the purge line.
Note – If the unit does not see all zones check the elbow fittings on the water trap. If they are cracked or broken the monitor may see only 4 zones.
1)– Pinch off the tubing between the water trap and in line filter. Go to the diagnostic screen on the RDM800. Observe the “PRES”, “VAC” AND “AMB” readings at the bottom of the screen.
a)– If the pressure DOES NOT drop to normal vacuum levels (about 2 PSIA below pressure reading) the problem is in one of the following;
1)– Tubing from the filter to the “T” connector.
2)- Tubing from the “T” connector to pressure sensor.
3)– Tubing from “T” connector to the I/R bench.
4)– Tubing from I/R bench to the pump.
b)– If the pressure DOES drop to normal vacuum levels then go to the tubing between the solenoid manifold and the water trap and pinch it closed.
1)– If the pressure DOES NOT drop to the same level as the first reading the problem is in the water trap.
2)– If the pressure DOES drop to the same reading as the first reading the problem is most likely in either the tubing around the solenoid manifolds or the solenoids themselves.
Observe “PRES”, “VAC” and “AMB” readings during the check procedure
Rev 3/2/09 | 6 |