negative (-) end of the batteries in first.
3. Replace the battery cover by sliding the door
into the slots provided in the handle and allow it
to snap into place.
4. For best performance use quality alkaline
batteries.
Operation Check
To verify the operation of the 720b simply turn
the unit on and allow it to warm up for approxi-
mately 1 minute. Expose the sensor to a known
gas source such as an unlit butane lighter. The
tick should increase when the gas in applied.
The tick will decrease when the gas is removed.
If the unit fails to respond, the sensor may need
replacing or the unit may need to be sent in for
repair:
CAUTION: This unit must be sent to a factory
authorized repair center for all repairs.
Sensor Replacement
1. Turn the 720b off.
2. Pull off the sensor cap.
3. Unplug the old sensor and discard.
4. Replace sensor and sensor cap.
5. Turn on unit and perform “Operation Check”
Warranty and repair/exchange policy
Your TPI 720b is warranted to be free from
defects in materials and workmanship for a peri-
od of one year after purchase (excluding sensor,
calibration and batteries). If within the warranty
period your instrument should become inopera-
tive from such defects, the unit will be repaired
or replaced at our option. This warranty covers
normal use and does not cover damage which
results from alteration, tampering, accident,
misuse, abuse, neglect or improper
maintenance. A purchase receipt or other proof
of original date of purchase will be required
before warranty performance will be rendered.
Instruments out of warranty will be repaired for a
service charge. Return the unit postpaid and
insured to:
Test Products International, Inc.
9615 SW Allen Blvd.
Beaverton OR 97005
(503) 520 9197
This warranty gives you specific legal rights and
you may also have other right which vary from
state to state.
