Mattress and Seat Systems Service Manual
Repair
Page 46
15
Replacing the Base Cover
All mattress replacements have a foam base between the loop base sheet assembly and the base cover.
15.1
Remove the top cover (Refer to Page 36, Section 3).
15.2
Pull the ends of the manifold tubes which connect to the pump into the mattress through the hole
in the base cover assembly.
15.3
Lift the loop base sheet assembly, complete with cells, manifold assembly and CPR end plug
assembly out of the mattress.
15.4
Replace the base cover.
15.5
Install the loop base sheet assembly, complete with cells, manifold assembly and CPR end plug
assembly into the mattress.
15.6
Feed the “pump” ends of the manifold tubes out of the mattress through the hole in the base
cover assembly.
15.7
Install the top cover (Refer to Page 37, Section 4).
16
Replacing the Pump Connectors on the end of the Manifold Tubes
Some of the mattress replacement, overlay and seat systems have connectors on the end of the
manifold tubes which clip onto the pump connectors. The remaining systems have open manifold tubes
which simply push onto the pump connectors.
All mattresses and seats with manifold connectors have one male and one female connector, except the
Alpha Active mattresses (MR and OL) which both have two female connectors.
To replace the pump connectors on the end of the manifold tubes, carry out the following procedure:
16.1
Do not disassemble the mattress or seat.
16.2
Remove the connectors from the ends of the manifold tubes.
16.3
Install the new connectors onto the ends of the manifold tubes. Make sure the correct
connectors are fitted to the manifold tubes.
Note:
On all mattresses and seats with one male and one female manifold connector, either
connector type can be installed on either tube, except on the Aura Seat where the female
connector
must
be installed on the shorter of the two manifold tubes.
17
Replacing the Turn Valves on the AlphaXcell Double Mattress Overlay
The AlphaXcell Double Mattress is a double inflatable mattress overlay, which provides static pressure
to one side and alternating pressure relief to the other side. The static and alternating sides of the
mattress can be set up on either side of the bed depending on customer requirements.
There are three 90° turn valves on the AlphaXcell double mattress overlay:
•
Two valves at the feet end of the mattress retain the air in the static side of the mattress.
•
One valve at the head end of the mattress is used to release air from the static side of the mattress
until the desired comfort is achieved.
To replace the turn valves, carry out the following procedure (Refer to Figure 13):
17.1
Remove the top cover (Refer to Page 36, Section 3).
17.2
To replace the two valves at the feet end of the mattress:
17.2.1
At the feet end of the mattress, move the base cover assembly and loop base sheet
assembly (including cells) out of the way to reveal the two turn valves in the section of
manifold between the sides of the mattress.
