Mindray A7 Operating Instructions

A7™ Operating Instructions 046-004667-00 4 - 21
Preoperative Tests Cylinder Tests
4.11 Cylinder Tests
NOTE: You do not need to perform cylinder tests if the A7 anesthesia machine
is not equipped with cylinders.
4.11.1 Check the Cylinder Pressure
1. Set the system switch to the OFF position and connect the cylinders to be checked.
2. Open each cylinder valve using the supplied wrench.
3. Ensure that each cylinder has sufficient pressure. If not, close the applicable cylinder valve
and install a full cylinder.
O
2
cylinder input range: 6.9 to15.5 MPa (1000 to 2250 psi)
N
2
O cylinder input range: 4.2 to 6 MPa (600 to 870 psi)
Air cylinder input range: 6.9 to15.5 MPa (1000 to 2250 psi)
4. Close all cylinder valves.
4.11.2 O
2
Cylinder High Pressure Leak Test
1. Set the system switch to the OFF position and disconnect the O
2
pipeline supply.
2. Set the O
2
flow to zero.
3. Open the O
2
cylinder valve.
4. Record the current cylinder pressure.
5. Close the O
2
cylinder valve.
6. Record the cylinder pressure after one minute.
If the cylinder pressure decreases more than 1.25 MPa (181 psi), install a new cylinder gasket.
Repeat steps 1 through 6. If the leak continues, do not use the cylinder supply system.
4.11.3 N
2
O Cylinder High Pressure Leak Test
1. Set the system switch to the OFF position and disconnect the N
2
O pipeline supply.
2. Set the N
2
O flow to zero.
3. Open the N
2
O cylinder valve.
4. Record the current cylinder pressure.
5. Close the N
2
O cylinder valve.
6. Record the cylinder pressure after one minute.
If the cylinder pressure decreases more than 0.5 MPa (73 psi), install a new cylinder gasket.
Repeat steps 1 through 6. If the leak continues, do not use the cylinder supply system.
4.11.4 Air Cylinder High Pressure Leak Test
1. Set the system switch to the OFF position and disconnect the Air pipeline supply.
2. Set the Air flow to zero.
3. Open the Air cylinder valve.
4. Record the current cylinder pressure.
5. Close the Air cylinder valve.
6. Record the cylinder pressure after one minute.
If the cylinder pressure decreases more than 1.25 MPa (181 psi), install a new cylinder gasket.
Repeat steps 1 through 6. If the leak continues, do not use the cylinder supply system.

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English