ENGLISH 15 / 77 CAP. 4 - LAYOUT OF THE MANUAL
M
ULTIGAS
4.3 GLOSSARY
To facilitate the comprehension of the manual, we list below the most important technical terms
used in it.
Refrigerant: Refrigerant fluid used in advanced motor vehicle A/C systems.
The following refrigerant fluids may be used:
o R-1234yf CH2CFCF3 2,3,3,3-Tetrafluoropropene.
o R-134a C2H2F4 - 1,1,1,2-Tetrafluoroethane
A/C system: Motor vehicle air conditioning system.
Equipment: MULTIGAS 8500 PLUS service station for recovering, recycling, draining and
charging the A/C system.
External tank: Refrigerant bottle used to fill the internal tank.
Internal tank: container for the refrigerant storage.
Phase: Performance of a single function.
Cycle: Sequence of steps.
Recovery: Extraction of refrigerant from the vehicle.
Recycling: Cleaning of the refrigerant, includes: separating out oils, removal of non-condensable
gas and single/multiple pass through filters to reduce the humidity, acidity and particulate
content of the fluid.
Disposal: disposal of refrigerant for storage followed by destruction/scrapping by an authorised
waste management centre.
Vacuum cycle: Draining out of a motor vehicle A/C system and separation out of condensed
matter and humidity, using only the vacuum pump.
Oil injection: Injection of oil into an A/C system to ensure the correct charge as specified by the
vehicle's manufacturer.
Charge: filling of refrigerant into the A/C system in the amount specified by the manufacturer.
System flushing: Cleaning phase for the removal of possible polluting substances from the A/C
system or parts of it.
Non condensable gases:
Gas stored in the gaseous phase, including air and nitrogen.