4. Lift
o ff
t he
f ront
c over.
Removing
B ack
C over:
1. Place
t he
u nit
o n
i ts
f ront.
2. Locate
t he
f our
s crews
s ecuring
t he
b ack
c over.
3. Using
a
P hilips-‐head
s crewdriver,
l oosen
a nd
r emove
t he
s crews.
4. Lift
o ff
t he
b ack
c over.
Portable
O xygen
C oncentrator
Figure
1 2.1:
R emoving
F ront
C
over
MN220-‐1
A
5 4