TRACING AGENT FLUORESCENT, PRODUCTION
The tracing agent is impregnated in a free standing "Dry-Water" cylindrical filter in the drying agent in the receiver.
The tracing agent dissolves and mixes with the A/C compressor oil in the climate control system. The tracing agent is light green in color. It is used to identify any leakage in the climate control system. If an UV lamp is used, it is easier to, see where the fluorescent tracing agent is leaking out.
To fill with refrigerant, see REFRIGERANT, FILLING .
To trace leaks, see LEAK DETECTION, TRACER AGENT or LEAK TRACING, ELECTRONIC LEAK TRACER .
TRACING AGENT FLUORESCENT, AFTERMARKET
Facts about the receiver
The receiver is supplied with tracing agent (see above) for aftermarket orders.
Facts about the tracing agent
- Volvo has introduced a fluorescent tracing agent for aftermarket use
- The tracing agent is in liquid form. It is mixed with the A/C compressor oil in the climate control system
- The tracing agent is light green in color. It is used to identify any leakage in the climate control system
- If an UV lamp is used, it is easier to, see where the fluorescent tracing agent is leaking out.
To fill with tracing agent, see FILLING WITH FLUORESCENT TRACING AGENT WITH THE REFRIGERANT .
FILLING WITH FLUORESCENT TRACING AGENT WITH THE REFRIGERANT
REGULATIONS
Filling and leak tracing the climate control system with tracing agent and an UV lamp from Bright Solutions Inc.
Note. The coloring agent may discolor the car paintwork. Therefore extreme caution must be taken when handling the tracing agent.
Note. Carefully follow the manufacturers instructions when handling the UV lamp and the tracing agent.
Note. After filling with the tracing agent, the decal supplied by the manufacturer/supplier must be applied at the point indicated.
FILLING WITH FLUORESCENT TRACING AGENT
When replacing components in the climate control system, the component (for example the drier) can be filled with tracing agent.
Filling an empty climate control system with tracing agent when a leak cannot be localized
- Fill with 225g of refrigerant with fluorescent tracing agent according to the manufacturers instructions for leak tracing.
Scheme 225
If the climate control system is filled
- Drain off 225 g of refrigerant, see «REFRIGERANT, DRAINING»(ref-479163-S24953484612012061200000)
- Fill the climate control system with refrigerant with tracing agent according to the manufacturers instructions
- Leak trace according to «LEAK TRACING, FLUORESCENT TRACING AGENT/UV LAMP»(ref-479182-S15088888032012061200000) .
If the amount of refrigerant in the climate control unit cannot be determined
- Drain the climate control system according to «REFRIGERANT, DRAINING»(ref-479163-S24953484612012061200000)
- Fill the climate control system with refrigerant with tracing agent according to the manufacturers instructions
- Leak trace according to «LEAK TRACING, FLUORESCENT TRACING AGENT/UV LAMP»(ref-479182-S15088888032012061200000) .
AIM
To offer the customer a passenger compartment which is free of bad odors and pollutants.
General
By placing an air quality sensor (AQS) in the air intake it is possible to measure the amounts of polluted air, primarily from motor vehicles. The signal from the air quality sensor is used to exclude the pollutants by using the recirculation (REC) mode. There is also a passenger compartment filter using activated carbon. This filter takes care of the pollutants in the couple of seconds before the recirculation shutter closes and on those occasions when recirculation cannot be used because of misting. The filter and the sensor are interdependent to provide the customer with as clean a passenger compartment as possible. The climate control system is equipped with a button to activate the system.
The filter
By supplying a particle filter with activated carbon, gases entering the passenger compartment can be absorbed. The focus of exclusion is on the following substances: NO, NO2, HC (benzene, toluene, xylene), CO, ozone.
What can activated carbon absorb?
Cold start: Good absorption of gasoline components is usually achieved.
Manure: Ammonia is badly absorbed, however some neutralization can be expected.
Exhausts: Good separation of uncombusted hydrocarbons and "diesel odor" is achieved.
Oil odor: Good.
Water treatment plants: Odor from water treatment plants is absorbed poorly.
Solvents Good.
Pulp mills: Many odorous substances. Some can be absorbed.
Odors are complicated and are difficult to explain in terms of concentrations and percentages. A filter will reduce odors and minimize strong odor changes and will therefore improve comfort. The car can never be completely odorless. In some cases the odor compounds may seem unexpected because the constituent substance compounds are modified.
Sensor
The sensor registers NOxCO and HC. These are the most prominent compounds produced by motor vehicles. The sensor registers increases in concentrations, for example when the vehicle enters a tunnel or when driving behind a truck. The sensor learns the environment it is in and only reacts to the relevant increase in concentration. One point is that the sensor reacts to CO, a compound which activated charcoal filters cannot handle.
THE AIR CONDITIONING (A/C) SYSTEM
Any leakage must be repaired immediately in order to prevent moisture entering the system.
Ensure the work area is kept dry and clean. Moisture and dirt will reduce the efficiency of the air conditioning (A/C) system.
Store compressor oil in a sealed container (compressor oil absorbs water).
When working on A/C systems, for example when replacing components, open ends must always be plugged immediately after undoing pipe or hose connections. When installing new components, leave the protective plugs in the holes until the component is actually needed. If dirt may have entered any component it must be inspected and cleaned.
If the car has been damaged in a collision it is important that every component in the system is inspected. Special attention must be paid to brazed joints. Cracked or deformed components must not be repaired.
DESICCANT IN THE RECEIVER
The receiver must be replaced when repairing a major leak or replacing a component, or if moisture is suspected to have entered the system. The receiver does not be replaced more often than on every third occasion if only minor work is carried out under favorable conditions. Favorable conditions are defined, for example, as a slow leak (over 24 hours) which is repaired immediately. When installing new components in a one year old car the receiver need not be replaced.
| CAUTION | To avoid corrosion problems the system must be filled immediately after installation. |
If the vehicle is left standing for more than 24 hours without refrigerant in the system, the system must be flushed twice with approximately 200 grams of refrigerant. Between the two flushing operations, pump the system completely dry for at least 10 minutes.
Note. Return used refrigerant to the supplier who will take care of it in an environmentally safe manner.