Permalert PAL-AT AT30C User Manual

PAL-AT Operating Manual
47
5.6 Troubleshooting Guide
The following guide lists the most common encountered problems. Also, refer to the PAL-AT Installation
Manual for detailed installation information. If you are unable to resolve a problem, contact PermAlert
Field Technical Assistance at techsupport@permalert.com or 847-966-2190. It is helpful to have the serial
number of the system board and the firmware version as shown in message LCD1.2-01 of this manual. It
also can save time if you are at the panel during the phone call.
SYMPTOM POSSIBLE PROBLEM ACTION
LCD
 No LCD backlight and
green LED on label off
 No LCD backlight and
green LED on label on
 No text in LCD
 No power to PAL-AT.
 Ribbon cable disconnected to LCD
 Contrast is adjusted incorrectly.
 LCD is defective
(Refer to figures 1-1, 1-2 or 4-1)
 Check PAL-AT internal power switch
settings for AC/DC operation.
 Measure input voltage at input
terminals.
 Check 24 V DC fuse if DC source
used.
 Make sure the cable is not twisted
between the LCD and system board
connector.
 Adjust the contrast on system board.
See section 1.2.3.
 Replace the LCD.
NO END FOUND
Or
FAULT IN 1
st
50 FEET

Jumper cable is disconnected/loose at
the cable plug in the PAL-AT panel.
 Impedance Selection Jumper is incorrect
 If a Zener Barrier Assembly is installed,
internal fuse failed.
 If a Zener Barrier Panel is installed,
external surge suppressor fuse failed or
fuse holder is not closed.
 The gain on the cable card is set too low
and there is a large section of cable wet.
 Connector in the first 50 ft of the system
is faulty.

Tighten the terminal screws on the
cable plug. Make sure the plug is
pushed tight into the receptacle on
the system board.
 Make sure the center conductor of
the cable is connected to the center
pin of the 3-pin connector.
 See figure 1-1 or 1-2
 Perform test in 5.4.1
 Perform tests in 5.4.2
 The gain is typically set to high for
hydrocarbon liquids and medium for
water-based liquids (see section
2.1.6.5).
 Perform insulation and continuity
tests (see section 5.5).
BASELINE = 0 or not 25 to
35

Hardware failure.

Contact PermAlert.
DATE and TIME
PROBLEMS

Battery jumper not installed
 Battery lost charge during power failure

Install jumper on 2 pins on processor
card (see section 4.4).
 Replace battery (see section 4.4).
NO CABLES SET FOR
CONTINUOUS
MONITORING

No cables have been setup
 Cables have been turned off-line
 Intermittent connector

Use Setup function (3) to setup
cables
 Use Verify function (4) to put cables
on-line.
 Check History for sequence of
leaks/breaks/drying in a localized
area. Perform “Cable Connector
Tests” shown above on connectors
nearby to locate intermittent fault.

Permalert PAL-AT AT30C Specifications

General

Brand	Permalert
Model	PAL-AT AT30C
Category	Measuring Instruments
Language	English