Download SERVICE PROCEDURES

SERVICE PROCEDURES
220DS 2 pipe Control Unit
The electronically controlled Control Unit provides the air supply
to the Mattress. The unit is operated by a digital touch membrane
on the front display panel which controls eight comfort pressure
settings; Alternating or Static Mode for treatment or transfers
respectively; Max Firm mode for rapid inflation to maximum
pressure to create a firm surface; and Control Unit Lockout to
prevent accidental changes to the settings. The Alarm LED
indicator and Alarm Mute completes the operator controls. The
visible and audible alarm function has a number of LED indication
sequences depending on the cause of the failure.
On the side of the unit are two air connectors (male and female)
for quick connection of dual air pipes. The connectors include a
press button release system for ease of use. The mains supply to
the unit can be easily disconnected and is designed to detach if
pulled too firmly – protecting the internal wiring from damage.
The quality of the Control Unit underpins the reliability and
pressure reduction capabilities of the System. At the centre of
the Control Unit lies the compressor, which runs at a rapid and
continuous rate whenever the unit is operational. Continuous
rapid movement places compressor materials under high stress
and heat conditions, which can make the unit susceptible to
wear and tear over a long period of time.
To minimise noise and vibration, the compressor is housed within
a strong metal cage, secured on all sides by rubber mounts.
These mounts serve to insulate the rest of the unit from the
vibration of the compressor.
Printed Circuit Board
(PCB)
Alarm Speaker
Safety Fuse
Compressor
Compressor Cage
Quick Release
Air Pipe
Connector - Female
Static Actuator
Alternation Timer Motor
Quick Release
Air Pipe
Connector - Male
Connector Plate
Rubber Feet
Power Socket
(IEC Connector)
4