R-134a liquid refrigerant is highly volatile. A drop on the
skin of your hand could result in localized frostbite. When handling the
refrigerant, be sure to wear gloves.
2.
It is standard practice to wear goggles or glasses to protect
your eyes, and gloves to protect your hands. If the refrigerant
splashes into your eyes, wash off immediately with clean water.
3.
The R-134a container is highly pressurized. Never leave it in
a hot place, and check that the storage temperature is below 52°C
(126°F).
4.
An electronic leak detector should be used to check the
system for refrigerant leakage. Bear in mind that the R-134a, upon
coming into contact with flame, produces phosgene, a highly toxic gas.
5.
Use only recommended lubricant for R-134a systems. If
lubricants other than the recommended type are used, system failure may
occur.
6.
POE lubricant absorbs moisture from the atmosphere at a rapid rate, therefore the following precautions must be observed:
•
When removing refrigerant components from a vehicle, cap the components immediately to prevent entry of moisture.
•
When installing refrigerant components to a vehicle, do not remove the cap until just before connecting the components.
•
Complete the connection of all refrigerant tubes and hoses without delay to prevent the A/C system from taking on moisture.
•
Use the recommended lubricant from a sealed container only.
7.
Do not use the same A/C recovery / charging station as conventional belt-driven compressors.
8.
Since the electric compressor uses high-voltage, you should use POE oil which have high volumetric resistivity.
•
If PAG oil mixes into the POE oil of the system, dielectric
breakdown may occur due to decreased volumetric resistivity and the A/C
compressor may not work.
9.
If an accidental discharging occurs in the system, ventilate the work area before resuming the service.
When replacing parts ON A/C system
1.
Never open or loosen a connection before the system has been discharged.
2.
Seal the open fittings of components with a cap or plug immediately to prevent intrusion of moisture or dust.
3.
Do not remove the sealing caps from a Replacement component until it is ready to be installed.
4.
Before connecting an open fitting, always install a new
sealing ring. Coat the fitting and seal with refrigerant oil before
making the connection.
When Installing Connecting Parts
Flange With Guide Pin
Check new O-ring for any damage (use only the specified) and lubricate with compressor oil. Tighten the nut to specified torque.
•
T stands for tensile intensity and is stamped on the head of each bolt in numerals.
Handling tubing and fittings
The internal parts of the refrigeration system will remain in
a state of chemical stability as long as pure moisture-free refrigerant
and refrigerant oil are used. Abnormal amounts of dirt, moisture or air
can upset the chemical stability and cause problems or serious damage.
The Following precautions must be observed
1.
When the refrigeration system needs to be opened, have
everything you will need to service the system ready so the system will
not be left open any longer than it is necessary.
2.
Cap or plug all lines and fittings as soon as they are opened to prevent the entrance of dirt and moisture.
3.
All lines and components in parts stock should be capped or sealed until they are ready to be used.
4.
Never attempt to rebind formed lines to fit. Use the correct line for the installation you are servicing.
5.
All tools, including the refrigerant dispensing manifold, the gauge set manifold and test hoses, should be kept clean and dry.
Description
Regeneration Brake System
During deceleration or braking of an electric vehicle or HEV,
the drive motor acts as an alternator and charges the battery by
converting the vehicle’s kinetic energy generated during braking into
electrical energy.
Regenerative braking amount de ...