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Engine JAC HFC4DA1-2C. Manual - part 93

AT Air

Air

Air Conditioner

Conditioner

- 161 -

Instruction and Operation

Precautions

Generally, dust covers are adopted for A/C
components, in order to avoid access of sewage,
dust and moisture. Dust covers should be removed
before operation and sealed after operation.

10.

During the reinstallation of A/C system after
removal, please apply refrigerant oil onto the
O-ring. As for screwed joints, install them by hand
and then use two wrenches for tightening. As for
the flanged joints, install nuts and bolts when
pushing the pipeline gently.

11.

During A/C

installation,

over

tightening

clamping of O-ring may cause refrigerant leakage,
so please operate as per specified torque.

12.

Hoses shall be free from distortion.

Moisture

Dust

First by hand and then with tools

Tighten to the specified torque

Don’t distort hose.

AT Air

Air

Air Conditioner

Conditioner

- 162 -

Instruction

Instruction and

and

and Operation

Operation

Functional

Functional operation

operation

“TO-FACE” mode

Air is adjusted when passing through system and
vented out through upper air vent. This mode is
applied to most of places using A/C.

“TO-FACE/FEET” mode

Air is adjusted and vented out through upper air
vent and floor air vent. The air from floor air vent
is hotter than that from upper air vent. However,
when

the

temperature

knob

rotated

counterclockwise to the end (hottest) or clockwise
to the end (coldest), air temperature from two
different positions are the same.

“TO-FEET” mode
Air is vented out through the bottom air vent.

“TO-FEET” plus “DEFROST” mode

Air is vented out through the bottom air vent and a
little air is vented out through defroster air vent and
air vent of side window defroster.

AT Air

Air

Air Conditioner

Conditioner

- 163 -

Instruction

Instruction and

and

and Operation

Operation

Functional

Functional operation

operation

Defroster

Air is adjusted and vented out through defroster air
vent and a little air is vented out through side
window defroster. It is recommended to use this
mode only in foggy or icy weather.

Internal/external circulation select button
Press this button and the indicator shall lighten,
indicating the internal circulation mode is applied;
press this button again and the external circulation
mode is selected.

Front control panel air volume knob
Rotate the air volume knob shown in the right
figure to achieve perfect control of the air volume
of blower. Rotate leftwards, the air volume shall
decrease, and rightwards, the air volume shall
increase.

A/C switch

Press this switch with the indicator on, indicating
the A/C system is in operation. Press this switch
again, and the A/C system is turned off.
If the fan knob is located at off position instead of
at certain position within speed setting range, the
A/C system cannot operate.

AT Air

Air

Air Conditioner

Conditioner

- 164 -

Instruction

Instruction and

and

and Operation

Operation

Functional

Functional operation

operation

Front control panel temperature control knob

Rotate the knob within the range shown in the
right figure, and the interior temperature can be
controlled within the indicated range.

10. Rear control panel cold/warm select knob

Rotate the knob within the red zone, the vented air
is warm air; rotate the knob within the blue zone,
the vented air is cold air.

11. Rear control panel air volume knob

Rotate the air volume knob shown in the right
figure to achieve perfect control of the air volume
of blower. Rotate leftwards, the air volume shall
decrease, and rightwards, the air volume shall
increase.

Content .. 91 92 93 94 ..