TM 5-4220-227-14
Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont).
W - Weekly
M- Monthly
Y - Yearly
Interval
Item
Item to be Inspected.
Procedures
No.
W
M
Y
4
*
Medical Lock Outer Door
Inspect preformed packing seal for nicks, cuts and
lubrication.
*
Remove preformed packing, clean seat in door,
relubricate and install.
5
*
Chamber Lights
Check lights for proper operation. If lights are
inoperative, refer to para. 4-41.
6
*
Communication
Check inner and outer lock headsets for proper operation.
If headset is inoperative, refer to para. 4-46.
7
*
Sound Powered Phones
Push button and check phone for proper operation.
If phones are inoperative, refer to para. 4-47.
8
*
Oxygen Analyzer
Place RANGE switch to BAT TEST and observe
meter. If needle is not in battery limit area,
recharge or replace.
9
*
Heater/Chiller Unit and Scrubber
Check that all power indicator lights function and
Assembly Blowers
both units are circulating air.
10
*
Recompression Chamber
Inspect inside and outside of chamber after
extended operation and clean per para. 4-56.
Conduct pressure test on chamber per FM 20-11-1.
11
*
Valves, Air Supply and Exhaust,
Pressurize inner and outer locks to 20 feet of sea
Inner and Outer Locks
water and operate inner and outer lock valves.
Inspect valves for leaks and that valves turn easily.
Lubricate if necessary.
12
*
Deck Plates
Inspect deck plates for corrosion. Clean, refer to para. 4-27.
13
*
Oxygen Mask
Inspect and service mask. Refer to para. 4-50.
14
*
Dual Hoses
Inspect for cuts, nicks and cracks and replace if damaged.
4-9
