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SECTION 3—MAINTENANCE AND TROUBLESHOOTING
Part No 1148139
25
MA90 Series
Changing the Filter
NOTE:
For
this
procedure,
refer
to
FIGURE 3.1
on
page 25.
Clean
the
filter
every
5
months
or
whenever
it
is
dirty.
1. Remove
the
two
screws
securing
the
filter
cover
to
the
back
of
the
control
unit.
2. Remove
the
filter.
3. Wash
the
filter
with
water
and
a
mild
detergent.
4. Dry
the
filter
completely.
5. Install
the
filter
into
the
back
of
the
control
unit.
6. Secure
the
filter
cover
to
the
back
of
the
control
unit
using
the
two
screws.
FIGURE 3.1
Changing the Filter
Troubleshooting
PROBLEM
CAUSE
SOLUTION
Mattress not inflating
Not alternating properly
Mattress hose disconnected
Connect hose connectors and lock
them in place
Air hose kinked or split
Unkink hose or replace split hose
Major leak in the air cushions or
overlay pad
Replace leaking air cushions or
overlay pad
Kinked or split manifold
Unkink manifold or replace split
manifold
Has power and fuse is good, control
unit does not come on
Send unit back for repair
Not alternating, solenoid or valve
malfunction
Send control unit back to factory for
repair
No air, pump or blower malfunction. Send unit for repair
Filter Cover
Screws