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Symptoms
One or Some Stations always do not
deliver enough product before shutting
off.
One or Some Stations intermittently
delivers too much product.
One or Some Stations intermittently do
not deliver enough product.
The Fluid Solenoid is hot.
Pump runs when all dispense points
(Stations) are closed.
System Accuracy:
The Impulse Meter and the DFC Console are not adjustable for accuracy; the maximum
System error is –10% on a single unit dispense. The
significantly with each increase in dispense units, at five units the maximum
error is –2%. The real world System accuracy is usually much better than the
factor indicates. Repeatability and accuracy is best when a completed dispense is followed by
another completed dispense.
Advertised meter accuracy is ±0.65%.
Samson Corporation-Swannanoa, NC 28778-
Troubleshooting Continued
Possible Reasons
Operator Error.
Fluid
Solenoid
action
impaired
debris.
Ready Light and Fluid Solenoid wired in
Series Circuit.
Control Handle inlet screen clogged
Pump not operating properly.
Operator Error.
Pre-Set amount too high.
Wiring to Impulse Meter.
Wire connections at Impulse Meter
Impulse Meter incorrectly plumbed.
Impulse Meter micro-switch out of
adjustment.
Impulse Meter micro-switch defective.
Impulse Meter rotary cam set screw
loose – cam not turning.
Impulse Meter defective.
Fluid Solenoid incorrectly plumbed.
Fluid Solenoid clogged OPEN with
debris.
Fluid Solenoid defective.
Operator Error.
System Accuracy limitations.
Wiring to Impulse Meter.
Impulse Meter micro-switch out of
adjustment.
Impulse Meter micro-switch defective.
Impulse Meter rotary cam set screw
loose – cam turning intermittently.
Impulse Meter defective.
DFC Console defective.
Normal Condition.
Thermal
Relief
Valve
Pressure Relief Valve)
Special Diagnostic Procedures
possible
800.311.1047 www.samsoncorporation.com
Solutions
Check Pre-Set function - test delivery
and re-train operator.
by
De-pressurize the system and clean the
screen.
Rewire in Parallel Circuit.
De-pressurize the system and clean the
screen.
Check air supply to pump.
Bleed air from piping.
Check function and wiring of Air
Solenoid, if used.
Diagnose
pump
troubleshooting manual.
Check Pre-Set function - test delivery
and re-train operator.
Re-Authorize a dispense using the
Operation section of this manual.
Trace and Repair.
Check for tightness, continuity and that
the correct terminals on the Impulse
meter are used.
IN the bottom, OUT the side.
Readjust and test.
Test and replace.
Tighten the setscrew.
Replace.
IN the side, OUT the bottom.
De-pressurize the system and clean the
valve parts and screen.
Replace.
Check Pre-Set function - test delivery
and re-train operator.
See the Special Diagnostic Procedures
on accuracy below.
Check for tightness and continuity.
Readjust and test.
Replace.
Tighten the setscrew.
Not likely – see the special diagnostic
procedures below. If defective replace.
Not likely – see the special diagnostic
procedures below. If defective replace.
Samson Fluid Solenoids are rated for a
110% duty cycle – this means that they
can
remain
without damage
They do get very hot to the touch after
a couple of minutes ON.
(Adjustable
Adjust or replace if defective.
System error factor decreases
possible
possible
using
the
proper
energized
indefinitely
at the rated voltage
.
possible
System
error
1060
7
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