Remove/install the air conditioning's high-pressure switch (roof equipment)

AR83.50-A-5070B

Remove/install the air conditioning's high-pressure switch (roof equipment)

06.06.2019

Model

690.34/63/64, 903.66/67

with code HH6 (Air conditioning, roof equipment)

*

Model

904.66

with code HK1 (Regulated air conditioning, roof equipment)

*

1

Electrical plug contact

2

High pressure switch

 

Remove/install

 Danger

Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area.

Model 690.34/63/64, 903.66 (except 903.662), 903.67
with code HH6 (Air conditioning, roof equipment)
*Model 904.66
with code HK1 (Regulated air conditioning, roof equipment)*

AS65.00-Z-0002-01A

 Danger

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained.

AS83.00-Z-0001-01A

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

Model 690.34/63/64, 903.66 (except 903.662), 903.67
with code HH6 (Air conditioning, roof equipment)
*Model 904.66
with code HK1 (Regulated air conditioning, roof equipment)*

AH83.30-N-0005-01A

1

Drain air conditioning system

AR83.30-A-1780B

2

Detach trim of condenser unit on roof

AR83.50-A-5000B

3

Disconnect electrical plug contacts (1) from high-pressure switch (2)

4

Remove high-pressure switch (2)

 Installation: Wrap teflon tape around thread of high-pressure switch.

 Pressure switch

*BA83.30-N-1001-03A

5

Install in the reverse order

6

Replace air conditioning system filter drier

AR83.50-A-5090B

 Fluid reservoir

Number

Designation

Model 690.34
with code H06 (Air-conditioning system)
Model 690.34
with code HH6 (Air conditioning, roof equipment)

Model 690.6, 901.6, 902.6, 903.6, 904.6, 905.6
with code HH9 (Air conditioner, automatic heater control)
Model 690.6
with code HH6 (Air conditioning, roof equipment)
Model 901.0/3/4, 902.0/3/4, 903.0/3/4, 904.0/3/4
with code H06 (Air-conditioning system)

BA83.30-N-1001-03A

Pressure switch

Nm

12

12

 Fluid reservoir

Number

Designation

Model 903
with code HH6 (Air conditioning, roof equipment)

Model 904
with code HK1 (Regulated air conditioning, roof equipment)

BA83.30-N-1001-03A

Pressure switch

Nm

12

12