26
C
C
H
H
A
A
P
P
T
T
E
E
R
R
6
6
M
M
A
A
I
I
N
N
T
T
A
A
I
I
N
N
I
I
N
N
G
G
Y
Y
O
O
U
U
R
R
F
F
I
I
L
L
T
T
E
E
R
R
E
E
D
D
P
P
C
C
R
R
E
E
N
N
C
C
L
L
O
O
S
S
U
U
R
R
E
E
Monitoring airflow and changing the filters is the primary
maintenance required. Certification and recertification is also
reviewed in Chapter 6.
Review this chapter on maintenance for the following:
1. Routine Maintenance.
2. Determination of when to replace the HEPA filters.
3. How to install a new HEPA filter.
4. HEPA filter leak test.
5. Speed control adjustment and setting the downflow velocity.
6. Operating and calibrating the airflow monitors.
7. Initial certification.
8. Re-certification.
9. Fluorescent light replacement.
10. UV light replacement, if applicable.
11. Motorized impeller replacement.
12. Speed control replacement.
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