MacDon M155 - Climate Controls

OPERATOR’S STATION
3.10.3 Climat
eControls
A – BLOWER Swit
ch controls the blower s peed.
• OFF/LOW/MEDI
UM / HIGH
B – Air Condit
ioning (A/C) Switch controls A/C system.
• OFF: A/C does
not operate.
•ON:A/Copera
tes with blower switch ON.
C–OutsideA
ir witch controls the air source.
• FRESH AIR: S
tarts booster fan and filtered outside air
is drawn int
ocab.
• RECIRCULA
TE: Stops booster fan and cab air
is recircu
lated.
D – TEMPERA
TURE ControlDial controls cab temperature.
• Turning th
e dial cloc kwise: Increas es temperature.
• Turning t
he dial counterclockwise: Decreases
temperat
ure.
Figure 3.34: Climate Controls
IMPORTAN T:
To distribute the refrigerant oil throughout the A/C
system, perform the following steps when starting the
windrower after more than one week of storage:
1. Ensure heater shut-off valve at engine is OPEN. Refer
to 3.10.1 Heater Shut-Off, page 56.
2. Turn blower switch to the first position, turn
temperature control switch to MAXIMUM heating, and
A/C control to OFF.
3. Start engine and operate at low idle until engine
is warm.
4. Click A/C switch from OFF to ON for 1 second, then
back to OFF for 5 to 10 seconds. Repeat this step
ten t imes.
147649 57 Revision A