Table of Contents
Advertisement
Maintenance
If a leak detector is available, the model can be leak checked with
the power off. Use helium and pressurize the lines to 1-5 psig and sniff
all fittings and lines.
If a leak detector is not available, admit air at 1-5 psig through the
instrument lines. Liberally apply a commercial soap bubble solution to
all fittings and lines. Most leaks occur at the gas inlet fitting.
CAUTION:
DO NOT USE THIS INSTRUMENT UNTIL IT
SUCCESSFULLY PASSES A LEAK CHECK TEST.
5.2 Troubleshooting
Table 5-1 describes common problems and corrective action to be
taken.
Table 4-1: Troubleshooting
Symptom
Unit does not turn ON when
actuating Power
Heater lamp does not illuminate
or illuminates continuously
Display reads negative (with
zero gas flowing through
Teledyne Analytical Instruments
Corrective Action
(a) Check DC adapter is mated in
securely to the port connector.
or
(b) Check DC Adapter is plugged
into 90-264VAC 47-63 Hz
power.
or
(c) Power adapter is defective—
replace adapter.
(a) No power to the unit—see above.
or
(b) Unit cannot attain proper
temperature due to wind or
temperature too cold—move
unit out of wind/draft or to a
warmer area.
(a) ZERO control may be
misadjusted. Perform a zero
Model 2750
36
Advertisement
Table of Contents
