TPI 753 User manual

753
Refrigerant Leak Detector
The Value LeaderTM
www.tpi-thevalueleader.com

Contents
• Specifications
• Product Features
• Replacement parts and accessories
• General Description
• Operating Instructions
• Battery Replacement
• Sensor Replacement
• Warranty
Specifications
Power Supply: "C" Alkaline Batteries
Sensor: Conductive Polymer
Ionization (CPI)
Sensitivity: Selectable to 0. oz/yr
134a
Warm up: Approx seconds
Response time: Instantaneous
Duty Cycle: Continuous
Battery Life: Approx. 30 hrs.
Size: 3.0" x 9.5" x . 8"
(77 x 40 x 58) mm
Weight: 1.1 lbs (500g)
Probe Length: 16"
Accessories
Standard Accessories:
Sensor: A71
Instruction Manual: 753 Instruction Manual
Soft Pouch A700
Optional Accessories:
Soft Case w/strap A755
Earphone A710
Test vial A713
General Description
The TPI 753 is a state-of-the-art refrigerant
leak detector capable of detecting all halo-
gen based gases. Selectable sensitivity
combined with audio and visual leak indica-
tors will allow any service professional to
pinpoint those tough to find leaks even in
contaminated environments.
Operating Instructions:
1. Turn the unit on in an uncontaminated
environment pressing the ON/OFF
button.

. All LED's will illuminate YELLOW
indicating automatic zeroing at start up. The
GREEN ready light will then illuminate if
there is ample battery power. If the GREEN
light flashes RED it is necessary to change
the batteries.
3. Approach suspected leak areas with the
sensor until the tick begins to increase.
When the tick increases and the LED's
illuminate showing only RED in color, do not
move the sensor from the area, press the
RESET button and wait approximately
seconds for a stable tick to begin again.
The LED's will illuminate from GREEN to
RED indicating up to 14 levels of leakage.
When all RED LED's appear the
leakage is at its maximum level. The RESET
button must be pressed again.
4. To find very small leaks use the same
procedure as listed in paragraph 4, but use
the "Sen HI" mode. When this is selected all
7 RED LED's will
illuminate momentarily and the tick will be
faster prior to the GREEN ready light being
illuminated.
5. To reduce sensitivity press the "Sen LO"
button. When this is selected 4 RED LED's
will illuminate prior to the GREEN ready light
being illuminated.
6. If the left GREEN LED flashes between
GREEN and RED, change the batteries.
7. An earphone can be plugged into the
earphone jack when using the instrument in
noisy environments.
8. If the tick is erratic, check the sensor for
tightness and cleanliness. Cleaning the
sensor with alcohol is permitted as long as
the instrument is turned off.
9. If the instrument does not perform, replace
the sensor. Sensor replacement is
recommended annually.
10.To turn off press and release the ON/OFF
button.
Battery replacement
1. Remove the battery compartment door from
the bottom of the handle by sliding the door
away from the front side of the instrument.

. Remove the batteries and replace by sliding
the negative (-) end of the batteries in first.
3. Replace the battery door by sliding the door
into the slots provided in the handle and
allow it to snap into place.
4. For best performance use a quality alkaline
battery.
Sensor Replacement
Replace the sensor when:
· The tick is erratic.
· There is reduced sensitivity.
To replace the sensor:
1. Turn the unit off.
. Remove the old sensor by unscrewing in a
counterclockwise direction.
3. Install the new sensor by screwing in a
clockwise direction until finger tight.
4. Do not change the sensor in a hazardous
environment
Warning: Turn unit off before cleaning or
replacing t e sensor. Failure to do so may
result in a mild electrical s ock.
Warranty and repair/exc ange policy
Your TPI 753 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 mainte-
nance. 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) 5 0 9197
This warranty gives you specific legal rights and
you may also have other right which vary from
state to state.

Copyright © 001, Test Products International, Inc
The Value LeaderTM
www.tpi-thevalueleader.com
Test Products International, Inc.
9615 SW Allen Blvd
Beaverton, OR 97005-4814 USA
753 Instruction Manual