Section 4 - Troubleshooting Table - FMC Technologies Smith Meter I-75 Service Manual

Problem
Over-registration (register-
ing more volume than pass-
ing through meter).
Under-registration (register-
ing less volume than pass-
ing through meter).
Product being eliminated
through vent line.
System fails to shut off
properly after delivering
preset quantity.
Restricted product flow
through meter.
System leaks after shutdown.
Large numeral counter or
ticket printer not operating
satisfactorily.
Page 18 • MN01029
Section 4 – Troubleshooting Table
Cause
Air passing through meter.
Calibrator out of adjustment.
Leaky valve in prover system (during
test run).
Mechanical friction in meter.
Binding or misalignment in driven
accessories.
Loose gear train or slipping drives.
Calibrator out of adjustment.
Oversize clearances in meter.
Product being eliminated through
vent line.
Air eliminator cylinder seal damaged.
Air eliminator float ruptured.
Foreign particles on cylinder sealing
surfaces.
Linkage out of adjustment between
set-stop counter and valve.
Improper setting of "Minimum Setting"
in set-stop counter.
Mechanical obstruction in valve.
Defective pushbutton set-stop
counter.
Plugged orifice.
Strainer clogged.
Butterfly valve in air eliminator
restricting flow.
Back pressure or manual valves do
not open.
Mechanical obstruction in meter.
Pump not operating (pressure
system).
No product.
Air being eliminated from product.
Pump undersized.
Pump not operating properly.
Linkage out of adjustment.
Defective main seat seal in valve.
Foreign matter holding main valve
seat open.
Drive coupling defective.
Internal problems.
Remedy
Check air eliminator.
Readjust calibrator. See MN01028, Pg. 4.
Repair prover valve and rerun test.
Check all meter clearances. See Pgs. 12
through 13. Check bearings for tightness.
Inspect accessories. Repair or replace.
Repair or replace.
Readjust calibrator. See MN01028, Pg. 4.
Check meter clearances. See Pg. 12.
See below.
Replace cylinder seal.
Replace float.
Clean sealing surfaces.
Adjust linkage correctly.
See Pushbutton Set-Stop Counter
Service Manual.
Disassemble and remove obstruction.
Inspect valve internals for damage.
See Troubleshooting Section in Push-
button Set-Stop Counter Service Manual.
Check orifice in upper piston of P-2 or
PG-2 Valve (pressure system only).
Clean strainer. Replace if necessary.
Repair or replace.
Disassemble and inspect for foreign
particles and/or defects. Repair.
Disassemble and remove obstruction.
Inspect meter internals for damage.
Inspect pump for mechanical or elec-
trical defects. Replace if necessary.
Supply product.
Normal - product flow automatically is
restricted during air elimination.
Replace with pump of sufficient capacity.
Check pump.
Adjust linkage correctly.
Replace seal.
Disassemble valve and remove foreign
matter. Check seal for damage.
Replace.
See Veeder Root Service Manual.
Issue/Rev. 0.5 (6/11)