11
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Alnor Model
AXD620/A
IRFLOW PVM620. If your symptom is not listed, or if none of the
solutions solves your problem, please contact TSI.
Table 5-1: Troubleshooting the Alnor Model AXD620/A
IRFLOW
PVM620
Symptom Possible Causes Corrective Action
No Display Unit not turned on Switch unit on.
Low or dead batteries Replace batteries or plug
in AC adapter.
Dirty battery contacts Clean the battery
contacts.
Reading fluctuates
/ unstable
Fluctuating flow Reposition probe in
less-turbulent flow or use
longer time constant.
No response to
keypad
Keypad locked out Unlock keypad by
pressing
ST keys
simultaneously.
Instrument Error
message appears
Memory is full Download data if desired,
then DELETE ALL
memory.
Fault in instrument Factory service required
on instrument.
WARNING!
The pressure sensor is protected from damage up to 7 psi (48 kPa or
360 mmHg). At higher pressure it can burst!