De Nora 200 Series, Instruction Manual

Page: 13 / 14

- 13 - 100.6015.10
5 TROUBLESHOOTING CHART
Since the operating performance of the remote meter panel can be effected by the vacuum regulator and
ejector, also refer to the Troubleshooting Chart in bulletin 100.6005, 122.6006, 122.6010, or 122.6015.
TROUBLE PROBABLE CAUSE CORRECTIVE ACTION
1. The required gas feed rate is
not achieved at start-up.
a. Insufficient ejector vacuum due
to insufficient water supply pres
sure for existing back pressure
conditions.
b. Leakage at vacuum line
connections, vacuum regulator
and/or inlet to ejector.
c. Vacuum line(s) crimped.
d. Length of vacuum line(s)
exceeds maximum allowable
transport distance.
a. Refer to Trouble 2.
b. Inspect each connection and
remake as necessary.
c. Replace vacuum tubing and
arrange line(s) to eliminate
2. Flowmeter ball bounces and/or
maximum gas feed rate cannot
be achieved during normal
operation.
a. Vacuum regulator inlet filter
screen dirty.
b. Rate valve dirty.
c. Flowmeter dirty.
d. Ejector water supply pressure
fluctuating causing insufficient
ejector vacuum. (Ball bouncing
only)
a. Replace gas inlet filter.
b. Clean the rate valve. See
Service section.
c. Clean the flowmeter. See
Service section.
d. Check water supply pressure.
Correct as necessary
3. Flooded metering tube. a. Dirt on the ejector check valve
seat, or worn seat
a. Clean or replace ejector check
valve seat. Refer to Ejector
instruction manual 122.6006,
122.6010, or 122.6015.
4. Vacuum leaks a. Rate valve o-rings worn.
b. Tubing connector loose.
c. Cracks in tubing
a. Replace o-ring.
b. Tighten tubing connector.
c. Replace tubing.