Shown on model 405.100 |
1 | Low pressure pipe |
2 | High pressure pipe |
G83.30-3108-01
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. | |
Warning | Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | |
Topical note | Procedure for a damaged or leaky air conditioning system | ||
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Notes on handling refrigerant R134a | |||
Draining | |||
1.1 | Open engine hood and position upright. | Model 405.1/2 | |
1.2 | Remove center cover from front panel. | Model 405.0 | |
2 | Remove cover caps from connections of low-pressure line (1) and high-pressure line (2). | ||
3 | Connect air conditioning service unit. | ||
| 000 588 04 82 00 Air conditioning service unit R134a | ||
Note operating instructions for respective air conditioning service unit. | |||
4 | Discharge air conditioning system. | ||
5 | Allow compressor oil to drain from receiver drier into a measuring container and note down quantity. | Only when replacing receiver drier. | |
6 | Drain separated compressor oil from air conditioning service unit and determine exact quantity. | Use new compressor oil when refilling the drained off quantity. | |
Evacuate | |||
7 | Clean and evacuate air conditioning system. | ||
Filling | |||
8 | Add compressor oil. | Replace separated compressor oil with new compressor oil. | |
If parts of refrigerant circuit were replaced, | |||
| |||
Observe additional filling capacities of compressor oil. | |||
New refrigerant compressors are already filled with compressor oil on delivery. | |||
Total compressor oil capacity for new A/C system (in refrigerant compressor, filled in as-delivered condition) | |||
Compressor oil refill quantity when replacing condenser | |||
Compressor oil refill quantity when replacing receiver drier + released residual quantity (variable) from receiver drier | |||
Compressor oil refill quantity when replacing evaporator | |||
Compressor oil refill quantity when replacing refrigerant line | |||
Compressor oil filling capacity when air conditioning system suddenly drained (line break), after flushing the refrigerant circuit | |||
Compressor oil in A/C compressor (filled in as-delivered condition) | |||
9 | Fill air conditioning. | Filling capacity for refrigerant | |
10 | Remove air conditioning service unit. | ||
| Check | ||
11 | Check air conditioning system using leak detector for leak tightness. | ||
12 | Start engine and run at idle speed for approx. 5 min. | ||
13 | With engine running, check air conditioning system for proper operation. | Operation of the air conditioning, see operator's manual. | |
14 | Attach cover caps to connections of low-pressure line (1) and high-pressure line (2). | ||
15 | Switch off engine. | ||
16.1 | Close hood. | Model 405.1/2 | |
16.2 | Install center cover to front panel. | Model 405.0 |
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