Lull 644E-42 Operation Manual - Manual (Page 67)

Operation
65 Model 644E Origin 3/04
To heat the cab:
ï turn A/C switch (6) to
the OFF position,
ï turn temperature control knob (7) to far right position
(RED = HOT),
ï direct desired air flow by adjusting vent louvers,
ï turn fan control (5) to position м3о (8) to assure rapid warm-up.
To defrost the cab:
ï turn temperature control
knob (7) to the far right
position (RED = HOT),
ï direct desired air flow by adjusting vent louvers,
ï turn fan control (5) to position м3о (8) to assure rapid defrost.
To cool the cab:
ï turn A/C switch (6) to the
ON position,
ï turn temperature control
knob (7) to the far left position (BLUE = COOL),
ï direct desired air flow by adjusting vent louvers,
ï turn fan control (5) to position м3о (8) to assure rapid cool-down.
OS1950
OA1390
OS1960
OU0930
8
5
7 6