Ventilator & Calibration Troubleshooting
6–14 www.zoll.com 906-0731-04-01 Rev. C
Troubleshooting — Smart Pneumatic Module (SPM) Hardware
Remote Calibration System
Discrete Tests Purpose Troubleshooting
SPM Communication The test confirms communication signals (RX
& TX), bootload and toggle (set/reset) are
functional prior to calibration.
• Review active service codes refer to the Service
code troubleshooting section.
SPM Self Check The device software continuously checks to
see that the hardware has not failed. The SPM
software checks for alarms. In event an alarm
is active, and the TCE indicates a failure.
• Review active service codes refer to the Service
code troubleshooting section.
SPM Blink Confirms the SPM is able to drive the LED’s
and Buzzer in the event the EMV is not
functioning.
Operator confirmation that Red LED's and
buzzer were driven within 15 seconds (Test
Passed = Pass), otherwise Test Passed = Fail
• Failure of this test may be the SPM board faulty or
connections to the SPM
• Check the SPM to UIM cable, the PIM to CPU cable,
PIM to SPM cable.
• Change the SPM Assembly.
O2 Leak and Filter
Check
The O2 system is checked for leaks.
• Input pressure limit is +/- 1 psi at 90 psi
• Input pressure limit is +/- 10% at 70 psi
• Leak rate is less than or equal 2000 ml/
hour at 55 psi.
• Sintered bronze filter resistance measured
at 100 LPM flow is between 0.01 and 0.06
psi/LPM.
• Reported O2 supply pressure limit is <2 psi
for zero, and <7 psi for 70 psi.
• Reported O2 Leak through valve limit is
less than or equal 0.3 LPM
1. If this is a failure, verify the O2 supply pressure.
Check O2 input barb. Check internal O2 tubing.
Check for damage or debris at the input filter.
2. If this is a failure check tubing. Check O-ring on O2
inlet assembly, O2 manifold, and O2 valve. Replace
O2 manifold and O-rings
3. If this is a failure, replace the sintered bronze filter
assembly
4. Check O2 supply, If this is a failure, check for kinked
or damaged tubing. Replace the Smart Pneumatic
Module (SPM)/ Vent Assembly Kit.
5. If this test fails check for kinked or damaged tubing,
Check for audible leak. Change the O2 valve.
Manifold Leak Test The system is pressurized (within
specification) to determine if there are any
leaks in the manifold connection or tubing.
The slope of the airway pressure during
simulated expiratory phase (no flow) shall be
less than 0.5 cmH2O per second at 5 cmH2O
and 25 cmH2O.
• Check test setup for leaks, check for deformation of
the test lung
• Checks for leaks between compressor/O2 Valve
output and gas output port.
• See the manifold calibration sheet.
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