Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 5 - 53
Repair and Troubleshooting Pneumatic Circuit System Problems
FIGURE 5-46
10. Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is transferred to the
next position. Once the negative pressure ball is fully expanded within 30s, it indicates that the
seal rings are damaged. If the two tests are both past, then the vaporizer manifold assembly and
the four seal rings are OK.
5.3.4 Breathing System
The following table lists breathing system related failures.
Failure
description Possible cause Recommended action
Leak
The CO2 absorber canister is not installed
properly.
Re-install the CO2 absorber canister.
Remove the sodalime at the sealing
connection. Ensure the correct
installation of sadalime canister.
The sealing piece for the absorbent
canister assembly is damaged, including
the two sealing cushions (049-000142-00
and 049-000145-00), which are in direct
contact with the absorbent canister and
the two sealing rings (082-001504-00) on
the bypass upper cover which are in
contact with the circuit bottom housing.
Replace the sealing component of the
CO2 absorber canister assembly. It is
required to replace the seal once a year.
The seal for the bag arm is damaged.
Replace the seal for the bag arm. It is
required to replace the seal once a year.
The water collection cup gets loose.
Check and tighten the water collection
cup.
The seal for the water collection cup
assembly is damaged.
Replace the seal for the water collection
cup assembly. It is required to replace the
seal once a year.
The seal for the circuit adapter assembly is
damaged.
Replace the seal, which is required to be
replaced once a year.
The bellows housing or bellows is not
installed properly.
Re-install the bellows housing or bellows.
Ensure their correct installation.

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English