MTZ 1220.1, Руководство оператора

Страница: 187 / 244

MTZ 1220.1/1220.3 K. Scheduled technical maintenance
K7
Operation 2. Coolant level in engine
Caution! The engine cooling system
operates under pressure which is main-
tained by a valve in the heat exchanger
cap. It is dangerous to remove the cap
on a hot engine. Let the engine cool
down, put a thick cloth on the cap and,
slowly opening the cap, remove the
pressure from the system before you
completely remove the cap. Avoid expo-
sure of open parts of the body to hot
coolant.
To get access to radiator plug (2), it is ne-
cessary to open hood as described at
page
Н 5. Remove the cap, taking the
above precautions, and check the coolant
level that must be up to the upper end of
the filler neck (1).
IMPORTANT! Do not let the level drop
lower than 40 mm from the upper end of
the filler neck.
Operation 2
а
. Air-conditioner maintenance
(when installed as an option instead of fan heater)
During shift-time maintenance of air
conditioner it is necessary to perform the
following operations:
Check air conditioner hose fixtures
Air conditioner hoses shall be prop-
erly fixed with coupling bands. The hoses
shall not be in contact with moving parts of
the.
Inspect/clean air conditioner con-
denser
Check cleanness air conditioner
condenser. If it is clogged, it is necessary
to clean the condenser with a compressed
air. Open the hood and direct an air flow
perpendicular to the condenser plane from
top downward. Jammed finning must be
planished by means of special comb or
plastic (wooden) plate. In case of severe
condenser clogging rinse it with hot water
under pressure not more than 0,15-0.2
MPa and blow it off by a compressed air.
Inspect/clean air conditioner drainage
pipes from the condensate water
Light-blue drain pipes are placed to the
right and to the left of the heating and
cooling device under the under ceiling
panel. To avoid clogging the drain pipes
shall be checked and cleared when ne-
cessary. Cleanness of a drain pipe is indi-
cated by water dripping when the work air
conditioner is used in hot weather.