Bacharach RDM800 - Manual (Page 8)

NO FLOW PROBLEMS
1) – Pinch off the tubing between the water trap and internal filter. Go to the diagnostic screen on the RDM800.
Observe the “PRES”, “VAC” AND “AMB” readings at the bottom of the screen.
b) – If the pressure does not drop to normal vacuum levels (about 2 PSIA below pressure reading) the
problem is in one of the following;
5) – Tubing from the filter to the bench.
6) - Tubing, “T” connector to pressure sensor.
7) – Tubing from “T” connector to I/R bench.
8) – Tubing from I/R bench to pump.
b) – If the pressure does drop to normal vacuum levels then go to the tubing between the solenoid assembly and
the water trap and pinch it closed.
3) – If the pressure does not drop to the same level as the first reading the problem is in the water trap.
4) – 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.
I/R Bench
Pressure
sensor
Solenoid
manifold
Step “a”
pinch
tubing
Step “b” pinch
tubing here
Water Trap NOTE –THERE ARE 2
ELBOWS ON THE
WATER TRAP. IF AN
ELBOW IS BROKEN,
THE MONITOR WILL
NOT RECOGNIZE MORE
THE 4 ZONES
Ensure that the drain
valve is tight (Turn
clockwise to tighten)
Check that
“FLOAT” is free
Exhaust
Pump
“T”
connector In line
Filter
Rev 3/2/09 8