Chapter 8
8-38
V60 Ventilator Service Manual
1049766 Rev A
Performance Verification
8.7.1
Test 1: Electrical Safety
8.7.2
Test 2: Leak Tests
Symptom
Recommended Repair
Ground resistance
out of range
1. Verify that the AC outlet is properly grounded. Try
another AC outlet.
2. Verify that the AC power cord is completely inserted
into the AC inlet.
3. Check for secure connections of AC mains ground
wires, power supply, gas outlet, proximal pressure
port, and GDS.
4. Check for visible damage to the power cord.
5. Replace power cord.
Cooling fan not
operating
1. Check that the fan wires are properly seated in the
connector on the MC PCBA.
2. Slave in a replacement fan and replace if it is
operational.
3. Replace the MC PCBA.
Forward/reverse
leakage current out
of range
1. Check for secure connections of ground wires from
the AC inlet, power supply, and GDS.
2. Replace power cord and rerun test.
3. Check for pinched cables and harnesses or damaged
wire insulation throughout the ventilator.
4. Replace power supply and rerun test.
Symptom
Recommended Repair
Oxygen inlet
reading out of
range (45-50 psig)
1. Verify that oxygen source is adequate for this test.
2. Check for leaks at the oxygen fitting.
3. Check that the oxygen solenoid valve is fully closed
by verifying that there is zero flow across the oxygen
flow sensor. If not, replace the oxygen solenoid valve.
4. Verify that the oxygen pressure transducer is reading
correctly. If not, replace the DA PCBA.
