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ELECTRICAL CONNECTIONS 

1.

 

Unit is wired for “CHASSIS GROUND.”

 

2.

 

Orange/white wire

: Connect this wire to ignition switch or 

ACC terminal which supplies power through a 5 amp fuse 
for either 12V or 24V vehicles.  This wire switches on the air 
conditioner’s power circuit when the vehicle is on and 
disables the AC when the vehicle is shut off.

 

3.

 

Red/white wire

: Main power lead; connect this wire to a 

power source with min 35amp breaker (12V) or 20 amp 
breaker (24V)  We recommend a 10ga wire from source to 
the unit.

 

4.

 

Blue wire

: Connect to AUXILARY POWER CONDENSER, or if 

using a RADIATOR MOUNTED CONDENSER, connect to 
compressor clutch. 

 

CAUTION

BE SURE THERE IS HI/LOW PRESSURE SWITCH 

INLINE BETWEEN THE EVAPORATOR AND THE 
COMPRESSOR.  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

HEATER HOSE:  

 LOCATE FITTINGS (2) EA. 
 #10 O-RING STRAIGHT / 5/8 dia HEATER 
UPSET.     
 
ATTACH TO THE INLET AND OUTLET ON 
THE BOTTOM OF THE UNIT USING (1) 
 #10 O-RING FOR EACH FITTING

.  

OUTLET / HEATER 

INLET / HEATER 

#6 LIQUID HOSE / TO CONDENSER 

 
 
 
 

#10 SUCTION HOSE / COMPRESSOR 

Summary of Contents for 4030 SERIES

Page 1: ...h side The air distribution plenum is attached and pre wired 2 Use the TEMPLATE provided to choose mounting location Avoid a location that requires cutting any of the roof stiffeners or any wall stiffeners If stiffeners are cut additional reinforcements may be required Do not cut or drill ROPS FOPS components block exits or obstruct the equipment operator s view 3 Mount the unit level or with the ...

Page 2: ...to the compressor ensure that the hoses will not bind or kink in any possible cab position Secure hoses so they will not chafe or become damaged Hoses must not come in contact with hot vehicle components exhaust manifolds etc Check to insure hoses will not be subject to mechanical abrasions 2 A 12 suction hose is recommended for hoses over 10ft 3 On units that have the optional heater attach hoses...

Page 3: ... wire to a power source with min 35amp breaker 12V or 20 amp breaker 24V We recommend a 10ga wire from source to the unit 4 Blue wire Connect to AUXILARY POWER CONDENSER or if using a RADIATOR MOUNTED CONDENSER connect to compressor clutch CAUTION BE SURE THERE IS HI LOW PRESSURE SWITCH INLINE BETWEEN THE EVAPORATOR AND THE COMPRESSOR HEATER HOSE LOCATE FITTINGS 2 EA 10 O RING STRAIGHT 5 8 dia HEA...

Page 4: ...ower switch to high speed and clutch rocker switch to on position clutch switch will light up when in the correct position a The a c clutch will be engaged b The evaporator blower will be on high speed c The condenser fan will be turning 6 Turn the fan switch to medium and low positions and evaporator motor should slow down 7 Turn the switch to the off position All motors and clutch will turn off ...

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