Hartridge CRi-PC Operating And Servicing Manual page 97

HARTRIDGE LIMITED
Audit 1 - Mass Overcheck
This audit is for the use of Hartridge personnel only and should not be accessed by the
operator.
Audit 2 – Leak check
The Leak test detects leaks in the metering unit and the fluid path between the injector nozzle
& the metering unit. The test must be carried out with the machine at ambient temperature to
help eliminate fluid cooling and contraction as a cause of errors.
To perform a Leak Test it is necessary to first have an injector running.
1. Start an injector test and apply a step that causes the injector to fire.
2. Select F12 from the Main Screen to change to the Alternate Menu and then select
3. The metering piston position is displayed in mm. Pressing the 'Start Audit 2' function
4. When the Leak Test has started the dialogue displays 'Waiting Stability'. The system
5. During measurement the dialogue will display 'Leak Test'. The leak rate is measured
6. Pressing the 'Start' function again at this point will result in the Stability and Leak Test
7. To end the Leak Test press click the 'Stop Test' function button.
Causes of leakage which can be rectified by the maintainer include:
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If the problem is not resolved by these actions contact Hartridge™ or your national distributor.
Audit 3 -
Audit 3 is only valid for a 4 line Cri-PC test bench and should not be attempted on the single
line Cri-PC test bench.
Audit 4 – Flush Test
This test measures restrictions in the metering unit particularly of the sintered filter.
With the injector working as for Audit test 2, click the 'Start Audit 4' Key to begin the test. The
software will automatically control the injector and the metering unit. When prompted by the
software, press the fixture unclamp button.
The filter is OK if the result is greater than 35 (-35 on the screen) mm/sec.
Causes of restriction which can be rectified by the maintainer include:
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HL037 (EN), Issue 13, AT714, 05/14
THIS IS AN UNCONTROLLED DOCUMENT downloaded by Lukas Matuska on 16 Feb 2016
Any technical intervention requires certified Hartridge training. Contact Hartridge Ltd for details.
F11 from the Alternate Menu to bring up the Metering Audit dialogue box.
key will stop the injections and perform a Leak Test at certain positions within the
range of the piston displacement. If the position is out of range injections will continue
(the dialogue displays 'Finding Position') until in range and then the Leak Test will
begin automatically.
will wait for 30 seconds after stopping the injections before measuring the leak rate.
over a 30 second period and then the resulting Leak Rate (mm per minute) is
displayed.
The leak rate must be less than 0.2mm/min.
being performed again from the current piston position (injector not fired again).
The injector and the bonded seal washer in the nozzle adaptor
Metering Unit Drain Solenoid
Metering Unit Filter Plug
Piezo Transducer O-ring (on the injector clamping fixture).
Injector adaptors
The braided pipe between the Injector and the metering unit
Metering Unit Filter blocked; see section 5.2.7 for instructions on replacing the filter
CRi-PC Operating and Servicing Manual
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