Field Troubleshooting Probe-Out Alarms - Veeder-Root TLS-450PLUS Troubleshooting Manual

9
Probe Troubleshooting
Alarm
Leak test invalid - temp out
of range
Temp change error - w/0.1
gph test
Temp change error - w/0.2
gph test (Mag 2 probe
N/A
only).
Temp change error - zone
change error
Temp change error - head
change error
Fuel Quality Water/phase separation
Alarm - Tank
has Ethanol-
Blended Gaso-
line floats
Density Warn- Tank product density has
ing exceeded preset limits.
NOTE 1. Refer to TLS-450PLUS Site Prep and Installation Manual (Veeder-Root No. 577014-073).

Field Troubleshooting Probe-Out Alarms

You must verify all locations utilizing shielded cable are wired correctly.
OFF
Turn off, tag, and lockout power to the console before opening display door assembly!
Verify that the drain wire of the shielded cable is connected to the console end only. If the drain wire is connected
on both ends this creates a ground loop which can produce Probe-Out Alarms. Remove power from the console
before disconnecting the probe cable from the probe.
Follow these steps in sequence to troubleshoot probe-out alarms.
All probes returned for a warranty claim must be accompanied with the documentation produced during the
following troubleshooting procedures to document the failure.
For any of the following steps that produce a printout from the console, those printouts must be provided with any
returned probe.
Table 9-1. Mag Probe Troubleshooting
Problem
Fuel temp reading is below
0°F or above 100°F.
Defective probe.
Temp of fuel changed by more
than 1/10th degree per hour
during the leak test.
Temp of fuel changed by more
than 2/10th degree per hour
during the leak test.
Temp of any covered thermis-
tor changed more than 3/10th
degree per hour during leak
test.
Temp in head of probe
changed more than 1/10th
degree per hour during leak
test.
Water/phase separation may
be present in tank.
The tank density is either
greater than the tank density
low limit plus 1.00 KG/M
(0.062 LBS/FT
than the tank density high limit
minus 1.00 KG/M
LBS/FT
Probable Cause
Retest when product temperature is
between 0 -100°F.
Replace probe.
Retest.
Retest.
Retest.
Retest.
Test fuel at bottom of tank to ensure
water/phase separation is not pres-
ent.
Verify fluid density. Retest when
product density is within the tank
density low and high limits.
3
3
) , or is less
3
(0.062
3
).
9-3
Field Troubleshooting Probe-Out Alarms
Corrective Procedure