Ambul T5 - Inspect System Air-Tightness; Examine Patient Breathing Valve; Machine Function Inspection

H-1.601. 00137-B3.0
Page 55 of 81
7.2 Inspect System Air-Tightness
1. 1. Open the oxygen cylinder valve slowly. Check the cylinder pressure on
the meter of reducing valve. For example, a reading of 2,00PSI indicates
sufficient oxygen storage, while a reading of 1,000PSI indicates that only
there is only one half of the full capacity in it. If the pressure reading is
less than 725PSI, replace the oxygen cylinder to ensure a ventilation
duration of sufficient length.
2. Shut off the oxygen cylinder valve.
3. Observe the reading on the meter of reducing valve for about one
minute. If the pointer stays still, it indicates a good air tightness; or
otherwise, there is leakage in the cylinder.
Locate and remove leakage：
1. Prepare a dose of soap solution with perfume-free soap.
2. Soak all thread joints and hose couplers into the soap solution. The
leakage is located at the position where air bubble appears.
3. Discharge the system pressure by shutting off the oxygen cylinder. Start
T5 till the reading on cylinder is "0"; and then shut down T5.
4. In case of leakage, replace the damaged component.
5. Inspect air tightness again.
6. If the leakage cannot be removed, an overhaul is necessary.
7.3 Examine Patient Breathing Valve
1. Disassemble patient breathing valve.
2. Perform visual inspection on the surfaces of all parts and components for
any crack or mechanical damage. Any wrinkled, sticky or twisted one-way
diaphragms (in number of three) must be replaced. Replacement is
unnecessary during inspection, but any wrinkled, sticky or twisted
one-way diaphragms must be replaced to prevent potential serious
failure.
3. Re-assembly the patient breathing valve.
note：
In assembly pay attention to the one-way diaphragms are located at the
proper position.
7.4 Machine Function Inspection
In addition to the aforesaid inspections, a simple functional inspection shall
be carried on by the dedicated medical personnel on the machine in
accordance with the following procedure to prevent any malfunction before
use for patient.