Pressure Audit (Refer To The Hartridge Audit Process Document For The Host Machine ); Failed Audits; End Of Test - Hartridge HM1023 Operating And Servicing Manual

HM1023 (AE72) Operating and Servicing Manual
4.3 Pressure Audit
Stop the machine drive before attempting any adjustments. Ensure the rail pressure
has dissipated before attempting to remove pressure transducers.
High Voltage!
Only qualified personnel are to attempt adjustments while power is applied to the
machine. Observe all safety precautions including, but not limited to - erecting signs
warning of the electrical hazard; placing barriers/chains around the hazardous area;
ensuring that metal items (such as jewellery) are removed before accessing the
hazardous area.
1. Switch on the AE72 Audit Test Box.
2. Set into 'CAL' mode and check the displayed value is 5000 ± 2.
3. Set into 'Overcheck' mode.
4. Follow the audit procedure as described in the machine audit document.
This generally involves –
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4.4

Failed Audits

If the results are out of tolerance, the host machine transducer may be faulty or the host machine
pressure calibration may need adjustment. Always check that the AE72 'CAL' value is within
specification before rejecting a transducer or adjusting machine calibration, if the 'CAL' value is
incorrect the pressure audit results are invalid.
4.5

End of Test

Stop the machine and switch off. Ensure the rail pressure has dissipated before
attempting to remove pressure transducers.
1. Switch OFF the AE72 Audit Test Box. Remove the AE72 pressure transducer from the machine.
2. Reconfigure the Host Machine for normal testing.
Ensure hydraulic connections are tightened to a maximum torque of 35Nm.
3. Start the Host Machine in Manual Mode.
Increase the rail pressure and check for leaks.
12
(Refer to the Hartridge audit process document for the host machine )
Checking host machine calibration with the PTD Simulator
Adjusting machine calibration if necessary
Adjusting the rail pressure on the host machine to the test pressures specified on the
audit Certificate of Compliance.
Confirming that AE72 readings at each point are within tolerance
HARTRIDGE LIMITED
HL078 (EN), Issue 1, AT3376, 04/2018