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Page 9

6.

Remove the dolly from the actuator assembly.

7.

Readings may be stored into memory by pressing the           button (pg. 10).

All settings and test results in memory are retained during power-down.

The red            button may be pressed to stop the pull test at any time.  The
maximum pressure value will remain on the display while the pump retracts the
actuator. This value can be stored into memory and will be uniquely identified by
the optional PosiSoft software. Stopping the pull test before destruction is handy
when specifications allow the test to be stopped when required adhesion strengths
have been exceeded. Uncouple the actuator from the dolly and then remove the
dolly from the surface with a sharp, sideways hammer tap.

Troubleshooting (PosiTest AT-A)

CAUTION: To avoid injury, keep fingers away from the quick coupling and
actuator assembly until the pull test has completed and the actuator has
been fully retracted. Press            to stop the pull test at any time.

Instrument is unresponsive or will not power down

In the unlikely event that the PosiTest becomes unresponsive or will not power
down, press and hold the            button, then press the            button. The
instrument will power down.

Stage 1.

Initiation - the display shows a blinking "0".

Stage 2. 

Priming - the pump applies initial pressure to the dolly.

Stage 3.

Test - when the priming pressure has been achieved (see step 5 on

pg. 7) the instrument begins calculating and displaying the pull rate
established by the user. Pressure build-up stops when the dolly is pulled from
the surface or when the            button is pressed.

Stage 4.

Retraction - the maximum pull-off pressure value blinks on the

display while the pump retracts the actuator. The buttons are locked during
this stage.

4.

Press the            button to ready the instrument. This prepares the PosiTest

for the test by clearing the display and zeroing the instrument.

5.

Press the            button again to start the test that consists of 4 stages that

occur 

automatically

:

Содержание PosiTest AT

Страница 1: ...PosiTest Pull Off Adhesion Tester INSTRUCTION MANUAL v 3 0 Simple Durable Accurate PosiTest AT manual PosiTest AT A automatic ...

Страница 2: ...Dolly Coating Preparation The dolly and the coating are cleaned and abraded see pg 4 2 Adhesive Dolly Application The adhesive is prepared and applied to the dolly The dolly is then adhered to the coated surface and the adhesive is allowed to cure see pg 4 3 Test Area Separation Optional step The test area of the coating is separated from the area surrounding the dolly by cutting or drilling see p...

Страница 3: ...f degreaser or adhesive to a sample area and observing effects Step 2 Adhesive Dolly Application Step 2 Adhesive Dolly Application Adhesive Selection The adhesive included in the PosiTest Adhesion Tester kit has been selected due to its versatility This adhesive has minimal impact on a variety of coatings and has a tensile strength exceeding the maximum performance capabilities of the pressure sys...

Страница 4: ...s from the cutting process Cutting may induce coating surface flaws such as microcracking that may alter test results For coatings with strong lateral bonding it is recommended to cut completely through the coating down to the substrate The decision of when to cut around a dolly is dependent on the standard specification or contractual agreement to which the test is to comply The primary purpose f...

Страница 5: ...4a Pull Off Test PosiTest AT Manual Pump Handle LCD USB port Actuator Handle Quick Coupling Actuator Assembly Battery Compartment Hose The PosiTest AT powers up and displays dashes when the button is pressed To preserve battery life the instrument powers down after 5 minutes of no activity 2 Push the actuator handle completely down into the actuator assembly Place the actuator assembly over the do...

Страница 6: ...mm 100 psi 0 7 MPa 50 mm 50 psi 0 4 MPa For optimum results prior to exceeding the priming pressure return the pump handle to its full upright position and then complete a single stroke at the desired pull rate until the actuator separates the dolly from the coating 6 Open the pressure relief valve and remove the dolly from the actuator assembly 7 Readings may be stored into memory by pressing the...

Страница 7: ...holes in the actuator assembly and lifting the quick coupling Release the quick coupling when the dolly head is completely engaged 2 Press the button to power up the instrument if necessary The instrument will power down after 5 minutes of no activity or by holding the button for 2 seconds 3 Check settings Step 4b Pull Off Test Step 4b Pull Off Test PosiTest AT A Automatic LCD USB port Actuator Ha...

Страница 8: ...ompleted and the actuator has been fully retracted Press to stop the pull test at any time Instrument is unresponsive or will not power down In the unlikely event that the PosiTest becomes unresponsive or will not power down press and hold the button then press the button The instrument will power down Stage 1 Initiation the display shows a blinking 0 Stage 2 Priming the pump applies initial press...

Страница 9: ...PosiSoft software Test results are not erased from memory after downloading Press AT manual or AT A automatic to exit viewing mode To remove all stored test results from memory press and hold the or button then press the button The icon will disappear from the display All settings and test results in memory are retained during power down Test results can be considered 100 valid when the coating is...

Страница 10: ...NiMH batteries are charged using the included AC power supply charger Ensure batteries are charged prior to use The symbol will blink while the instrument is recharging and disappear when fully charged The charging process will take 2 3 hours depending on remaining battery power Alternatively the AC power supply can be used to power the instrument The USB port will not charge or power the PosiTest...

Страница 11: ...erical errors Returning for Service Returning for Service There are no user serviceable components Any service must be performed by DeFelsko Corporation If you need to return the Instrument for service describe the problem fully and include reading results if any Be sure to include contact information including your company name company contact telephone number and fax number or email address www ...

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