B-526-10N-E
50
15. TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
COPING ACTION
1. Totalizer will not
count.
1. Flowrate is low.
1. Open valves progressively.
2. Insufficient pump pressure or head
pressure.
2. Taking pressure loss of entire piping assembly into
consideration, correct pump pressure or head
pressure.
3. Power line voltage is out of
specification or current carrying
capacity of power source is
inadequate.
3. Provide a 14-45VDC power to the register. (12 to
24VDC for open collector or voltage pulse output.)
Current carrying capacity 30mA min. is required
for power. (With analog output equipped register,
24VDC, 60mA min. is required.)
4. Battery has run down.
4. Referring to Section 13, replace batteries.
5. OVAL rotors jammed with foreign
matter; rotors locked; metered liquid
fails to run.
5. Referring to Disassembly and Inspection
Procedure (Sec. 10), disassemble meter body and
clean the rotors thoroughly.
6. Sensor installed out of position.
6. Refer to "How to Change Flow Directions" (Sec. 7)
and reinstall the sensor.
2. Unusual noise.
1. Air is entrapped.
1. Decrease flowrate and eliminate air in the piping
assembly.
2. Vaporized metered liquid in the
piping assembly.
2. Decrease flowrate and control metered fluid
temperature and pressure to prevent vaporization.
3. OVAL rotors revolving in contact with
measuring chamber.
3. Refer to Disassembly and Inspection Procedure
(Sec. 10) and disassemble and inspect for
condition.
3. "BATT" flickers.
1. Battery voltage is low.
1. Refer to Sec. 13 and replace batteries.
4. Liquid leaks.
1. Incomplete seal of the pipeline.
1. Inspect rear cover fitting bolts for tightness or
replace gaskets.
2. Incomplete seal on rear cover of
meter body.
2. Retighten bolts at pipeline connections and
replace O-ring with new one.
5. Counts while valve
remains closed.
1. Valve and pipeline leaks.
1. Inspect valves and pipeline.
2. Air pockets between valve and OVAL
meter; rotors in rocking motion in
response to pump's pulsating
pressure.
2. Vent air.
Provide a check valve and accumulator.
3. Supply power voltage fluctuates.
3. Eliminate voltage fluctuation.
6. Analog output
unusual.
1. Load resistance too great.
1. Referring to "Load Resistance Range" on pages
22 and 23, check load resistance to power supply
voltage relationship and keep them within the
specified range.
7. Accumulated total
too high.
1. Rotors in rocking motion in response
to a pulsating flow.
1. Add a check valve and accumulator.
2. Influenced by external magnetic
fields (Meter sensor picks up
external magnetic fields created by a
motor, generator, etc.)
2. Keep out external magnetic fields.
3. Air entrapped.
3. Provide an air vent.
8. Accumulated total
too low.
1. Influenced by external magnetic
fields.
1. Keep out external magnetic fields.
Summary of Contents for ULTRA UF-II
Page 67: ...B 526 10N E 67...
