GDS GASMAX - Troubleshooting Guide; Sensor Faults and Overrange; Sensor Zeroing Issues; Unusual Behavior and Cold Boot

GASMAX/TX Operation & Maintenance Manual, Revision 1.0
Page 45
12 TROUBLESHOOTING GUIDE
SENSOR INDICATES FAULT OR OVERRANGE
• Certain toxic sensors indicate fault or over-range at power up and quickly drift towards zero. This
is normal behavior.
• Examine the sensor for moisture or discoloration. Replace sensor if wet or discolored.
• Inspect sensor cable and junction box for moisture or standing water. Replace cable or junction
box interface boards if wet or damaged.
• If no moisture, discoloration or damage is found, sensor may be at the end of its useful life.
Replace sensor.
• Toxic sensors left unpowered for more than 3 months are subject to accelerated degradation and
may demonstrate a permanent loss of sensitivity.
SENSOR WILL NOT ZERO
• Background gas is present. Use ‘zero air’, a mixture of oxygen and nitrogen to zero the sensor.
• Sensor output drifted above calibration maximum limit or drifted below fault limit. Sensor is
defective and should be replaced.
GASMAX/TX EXHIBITS UNUSUAL OR UNEXPECTED BEHAVIOR
• Reload sensor defaults (see )
• Perform a “Cold Boot” to re-initialize the entire system. To perform a Cold Boot, hold the magnet
over the UP/ON key until the display reads “Release Key”, then slide the magnet over the EDIT
key.
NOTE: COLD BOOT CLEARS ALL DEVICE SETTINGS, INCLUDING NETWORK IDENTIFIER AND DEVICE
ID. BE SURE TO RECORD THESE VALUES BEFORE PERFORMING THE COLD BOOT PROCEDURE.
GASMAX/TX DISPLAY BLANK
• Turn the GASMAX/TX on by holding a magnetic wand over the UP/ON key
• Open enclosure and inspect battery for proper installation.
• Replace battery – NOTE: BE SURE TO OBSERVE PROPERLY POLARITY
GASMAX/TX AND C2/TX WIRELESS SITE MANAGER DISPLAYED VALUES
DON’T MATCH
• Verify viewing proper channel
• Verify C2/TX “device ID” and GASMAX/TX “device ID” match