Symptoms Possible
Reasons
Solutions
Y-Strainer clogged with debris.
De-pressurize the system and clean the
screen.
Fluid Solenoid clogged CLOSED with
debris.
De-pressurize the system and clean the
screen.
Ready Light and Fluid Solenoid wired in
Series Circuit.
Rewire in Parallel Circuit.
Impulse meter inlet screen clogged.
De-pressurize the system and clean the
screen.
Control Handle inlet screen clogged
De-pressurize the system and clean the
screen.
Check air supply to pump.
Bleed air from product piping.
Check function and wiring of Air
Solenoid, if used.
Pump not operating properly.
Diagnose pump using the proper
troubleshooting manual.
DFC Ready Light ON.
Ready Light at Station ON.
No Product flow at Dispense Point.
No product in bulk tank or drum.
Fill bulk tank or replace drum.
Pre-Set
amount
too
high.
Re-Authorize a dispense using the
Operation section of this manual.
Wiring from DFC to Impulse Meter.
Trace and Repair.
Wire connections at Impulse Meter
Check for tightness, continuity and that
the correct terminals on the Impulse
meter are used.
Impulse Meter incorrectly plumbed.
IN the bottom, OUT the side.
Impulse Meter micro-switch out of
adjustment.
Readjust and test.
Impulse Meter micro-switch defective.
Test and replace.
Impulse Meter rotary cam set screw
loose – cam not turning.
Tighten the setscrew.
Impulse Meter defective.
Replace.
Fluid Solenoid incorrectly plumbed.
IN the side, OUT the bottom.
Fluid Solenoid clogged OPEN with
debris.
De-pressurize the system and clean the
valve parts and screen.
DFC Ready Light ON.
Ready Light at Station ON.
Product flow at Dispense Point will not
stop.
Fluid Solenoid defective.
Replace.
Operator Error.
Check Pre-Set function - test delivery
and re-train operator.
System Accuracy limitations.
See the Special Diagnostic Procedures
on accuracy below.
Wiring to Impulse Meter.
Check for tightness and continuity.
Impulse Meter micro-switch out of
adjustment.
Readjust and test.
Impulse Meter micro-switch defective.
Replace.
Impulse Meter rotary cam set screw
loose – cam turning intermittently.
Tighten the setscrew.
Impulse Meter defective.
Not likely – see the special diagnostic
procedures below. If defective replace.
All Stations always deliver too much
product before shutting off.
DFC Console defective.
Not likely – see the special diagnostic
procedures below. If defective replace.
Operator Error.
Check Pre-Set function - test delivery
and re-train operator.
System Accuracy limitations.
See the Special Diagnostic Procedures
on accuracy below.
Impulse Meter rotary cam set screw
loose – cam turning intermittently.
Tighten the setscrew.
One or Some of the Stations always
delivers too much product.
Fluid Solenoid action impaired by
debris.
De-pressurize the system and clean the
valve parts and screen.
Operator Error.
Check Pre-Set function - test delivery
and re-train operator.
Wiring to Impulse Meter.
Check for tightness and continuity.
Impulse Meter micro-switch out of
adjustment – double clicking.
Readjust and test.
Air leaks in Pump suction.
Reseal Pump suction tube.
All Stations always do not deliver
enough product before shutting off.
Foot valve on Pump missing, not sealed
or defective.
Replace, Reseal, or Repair.
1060
6
Troubleshooting Continued
Samson Corporation-Swannanoa, NC 28778-
800.311.1047 www.samsoncorporation.com
