System Control - Kubota B1830 Workshop Manual

B1830,B2230,B2530,B3030, WSM

3. SYSTEM CONTROL

(1) Air Mode Lever
(2) Blow Switch
(3) Air Conditioner Switch
(4) Temperature Control Lever
(5) Fresh Air
(6) Air Intake Door D1
1) Selection of recirculated air (7) or fresh air (5) is done with door D1.
RECIRC
By setting the air selection lever (16) in rear control panel to RECIRC position, door D1 (6) shuts the fresh air inlet
port. Air inside the cabin is then recirculated.
FRESH
By moving the air selection lever (16) to FRESH position, door D1 opens the fresh air inlet port. Outside air comes
into cabin.
2) Temperature control of outlet air is done with door D2.
COOL
By setting the temperature control lever (4) in control panel to COOL position, door D2 (10) is moved to close
water valve. The air flows to door D3 (12) side without passing the heater core.
WARM
By moving the temperature lever to WARM position door D2 is moved to open the water valve. The air flows to
door D3 (12) side passing through the heater core.
3) Outlet air flow is controlled by door D3.
Moving the air mode lever (1) opens and shuts door D3 and establishes the air passage according to the lever
position.
DEF + FACE
By moving the mode lever to DEF + FACE position, the door D3 is moved to establish the air passages to outlets
O1, O2 and O3. Air comes out from both outlets.
DEF
Moving the mode lever to DEF position, door D3 is moved to set up the air passage to outlet O1. Air comes out
from outlet O1.
(7) Recirculated Air
(8) Blower
(9) Evaporator
(10) Temperature Door D2
(Air Mixed Door)
(11) Heater
10-M20
(12) Air Outlet Door D3
(Mode Door)
(13) DEFOGGER
(14) FACE
(15) DEF and FACE
(16) Air Selection Lever
CABIN
(A) Control Plate
(B) Air Selection Lever
(C) Block Diagram of Air Flow
Passage
O1: Front air outlet
O2: Side air outlet
O3: Door air outlet
9Y1210003CAM0026US0
KiSC issued 05, 2012 A