Engström Carestation
9-4
08/07 1505-1018-000
9.2 How to bleed gas pressure from the machine
Before disconnecting pneumatic fittings, bleed all gas pressure from the ventilator.
1. Disconnect all gas supplies from the source.
2. Set the system switch to On.
3. Ensure that all pressures read zero.
4. Establish a flow for the affected gas to bleed down the pressure.
5. Set the system switch to Standby.
9.3 Accessing chassis components
Most of the EC components are mounted to a two-tier chassis that slides out of the
housing for access to the internal components.
The pneumatic (and related Vent Engine) components are mounted on a manifold that
occupies the lower tier of the chassis. To access the pneumatic components, the entire
manifold assembly can be removed from the chassis.
The electrical (and related circuit board) components occupy the upper tier.
Electrical components on the Vent Engine connect to the Ventilator Control Board (VCB)
and the Ventilator Monitor Board (VMB) through a single, two-connector harness.
To diagnose the operation of the EC while still disassembled, the components (Vent
Engine, circuit boards, Display Unit) can be arranged and reconnected with existing
harnesses. A separate Display Unit Cable can be used as a service tool to make the
connection between the Chassis and the Display Unit less restricted.
Vent Engine
Chassis
Housing
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