Note. For engine troubleshooting beyond this
65. Insufficient Airflow
point refer to manual TM 62806206-14. para 22 to
Probable cause
Possible remedy
28 inclusive. The engine manual is part of the ABC-
Particulate filter clogged.
Replace particulate filter
M6A1 filter unit and is with the engine.
on recommendation of
proper authority.
63. Electric Motor Falls to Start
Obstruction in air Inlet
Remove obstruction.
Probable cause
Possible remedy
hose, canister air inlet,
Fuses blown ......................... Replace fuses
or blower air inlet.
Defective electrical cable
Replace.
Obstruction in air outlet
Remove obstruction.
Defective electrical male
Replace.
hose, canister air outlet,
plug connector.
or blower air outlet.
Mechanical failure of mo-
Report to general support
Canister inlet damper not
Adjust canister inlet
tor or blower.
maintenance.
correctly adjusted.
Damper or engine
speed (para. 69).
64. Excessive Airflow
Gasoline engine running
Adjust engine speed.
Probable cause
Possible remedy
too slow
Reference TM 5-2805-
Filters loose or damaged
Tighten
canister
206-14.
turnbuckles or replace
66. Improper Filtering
filters.
Probable cause
Possible remedy
Gasoline engine running at
Reference TM 5-28 -
Filters loose or damaged
Tighten canister
excessive speed
206-14, paras. 55
turnbuckles or replace
through 59 inclusive.
filters.
Canister inlet damper not
Adjust canister Inlet
Gas filter not functioning
Replace gas filter on
correctly adjusted.
Damper or engine
properly
recommendation of
speed (para. 60).
proper authority (para.
Moisture in filters
Replace filters.
Section VI. CANISTER GROUP
be worn during this operation. He should also
67. Description and Function
The description and function of the canister
prescribe the necessary safety measures that must
assembly is given in paragraph 5.
be followed, including the decontamination
68. Tests
operation that must be performed before the new
The effectiveness of the canister decreases with
gas filters are installed in the canister (TM 3-220).
use. It should be tested every 6 months for satisfactory
69. Airflow Adjustment
filtering. The particulate filters become dirty or clogged
a. Check the canister for proper airflow when the
and reduce the airflow to an unsafe level. Gas filters
inlet damper (para 70) requires adjustment and when
become
ineffective
after
neutralizing
large
particulate filters have been replaced.
Check the
concentrations of gas or after prolonged use in gas-
canister also when the speed of the gasoline engine has
contaminated areas. Install and operate the ABC-M6A1
to be regulated (reference TM 5-2805-206-14). Prior to
filter unit to perform the following tests.
checking the canister and operating the filter unit, the
a. Particulate Filters. Check filter unit for proper
following general inspections should be performed.
airflow (para. 69).
b. Visually check the air inlet and outlet hose and
b. Radiological Agents. The canister should be
connections of the filter unit for improper hookup,
checked by a monitor from the unit CBR team after
damage, and deterioration.
being used during an attach with radiological agents.
c. Since the filter unit is used primarily to provide
The filters will be replaced when the gamma dose Irate
filtered air to improvised CBB protective shelters (TM 3-
exceeds safe limits (TM MED) 254).
350), the shelter should be inspected visually for
c.
Gas Filters.
Organizational maintenance
possible source of air leakage before operating the filter
personnel will be notified by the operator when
unit.
contaminated gas filters are to be replaced (para. 13).
d. Check the shelter air locks, entrances, exits,
Warning. The unit commander or senior officer
and antibackdraft valves for proper fit, damage, and
in charge of the maintenance personnel assigned to
improper operation.
remove and dispose of the contaminated gas filters
must prescribe the necessary protective clothing to
32