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15.
CONDITION PROMPTS and SYSTEM FAILURE CODES
To assure proper performance, your Computrac
®
VAPOR PRO
®
Rx
uses an intelligent self-
diagnostic system to detect any problems in the hardware, software, sensors or flow system.
Operating abnormalities and fault conditions will result in
condition prompts
or
system failure
codes
. They will be recorded in the Exception Reports table.
Condition Prompts
Condition prompts indicate operating conditions that prevent starting or completing a moisture
test. Following each condition prompt are possible causes and recommended solutions.
•
“INPUT CARRIER GAS FLOW LESS THAN 40 mL/min”
This prompt appears when the carrier gas flow into the instrument falls below the specified rate.
Possible Cause
Recommended Solution
Source of carrier gas not connected
Connect source
Source pressure too low
Increase source pressure to 20 psi
Flow system filter plugged
Remove and replace filter
Source connected to ‘flow out’ barb
Connect to ‘flow in’ barb
Flow sensor failure
Call Arizona Instrument
Blocked needle
Check that bottle septum is not
blocking needle port
•
“THE RH SENSOR WAS NOT READY”
This is a normal condition between tests, indicating the drying or ‘zeroing’ of the sensor. If the
condition persists for more than a few minutes then:
Possible Cause
Recommended Solution
Flow system contaminated
Locate and eliminate contamination
System unusually wet
Wait for system to dry
Wet source gas
Install/change external desiccant chamber
•
“BALANCE COMM FAILURE”
This prompt indicates that the selected memory start specifies the weight input from a digital
balance but the instrument is not communicating with a balance. Check the cable, and assure
that the balance is powered on, is on line, and stable.
