TM 9-4120-411-14
4.6.4 Corrosion Prevention Control. If a corrosion problem is identified, it can be reported using Standard Form 368,
Production Quality Deficiency Report. The form should be submitted to the address specified in DA Pam 738-750. This
will result in more definitive actions being taken to prevent future occurrences.
Table 4-1. Unit Preventive Maintenance Checks and Services for FDECU.
NOTE
If the FDECU must be kept in operation during a scheduled PMCS interval, perform
only those procedures that will not disturb operation then perform remaining
procedures when the unit can be shut down.
Item
Interval
Item to be
Procedure
"Not Fully Mission
No.
Checked or Serviced
Capable If":
1
Quarterly
Inside Blower
Examine inside blower then clean as nec- Inside blower dam-
essary and inspect for any cracks or other aged or dirty enough
damage. Replace if damaged.
to cause reduced air
flow.
2
Quarterly
Outside Fan
Clean outside fan as necessary and in-
Outside fan is dam-
spect for any cracks or other damage. Re- aged or dirty enough
place if damaged.
to cause reduced air
flow.
3
Quarterly
Condensate Drain
a. Remove supply panel per paragraph
Condensate drain
Hose
hose obstructed.
b. Examine condensate drain hose for
any obstruction. Clean as indicated.
4
Semi-
Wires, Cables, Har-
a. Open cover a nd panels as necessary
Any wire, cable, or
annually
nesses, and Electri-
to access component connections.
harness is damaged.
cal Connections
b. Check wires, cables, and harnesses
Any electrical connec-
for breaks, cuts, or frayed insulation.
tion is loose, missing,
c. Check that all electrical connections
or damaged.
are secure. Tighten if necessary. If
terminals are missing or damaged,
repair or replace per paragraph 4.16.
5
Semi-
Electrical System
a. Open cover and panels as necessary
Electrical system com-
annually
Components
to access components.
ponent damaged or
b. Check components for damage or
overheated.
evidence of overheating. Replace
any damaged components per ap-
propriate procedure.
Change 1 4-15
