F-Gas English Low GWP
Minden kérdés
HFC | Flammable | CO₂ | NH₃
Könnyű kérdések |
Közepes nehézségű kérdések |
Nehéz kérdések
1
Könnyű
What is the basic requirement when charging a system with R717 (NH₃)?
| Charging must only take place at temperatures below 0°C |
| Charging can be carried out without personal protective equipment |
| Charging should take place in a well-ventilated area using appropriate personal protective equipment |
| NH₃ can be charged together with air |
2
Könnyű
What is the correct procedure for recovering R717 from a system?
| Recovery is not required |
| The gas can be released into the atmosphere |
| The refrigerant must be recovered into suitable, leak-proof tanks designed for NH₃ |
| The refrigerant can be drained into the sewer system |
3
Könnyű
How should R717 (NH₃) be stored?
| Near heat sources |
| In any open containers |
| In sealed, labelled containers, in a cool and well-ventilated place |
| In unmarked plastic containers |
4
Könnyű
What is the main hazard associated with an R717 leak during maintenance work?
| Toxic to humans and may cause chemical burns |
| Damage to electrical equipment only |
| Increased cooling efficiency |
| No risk whatsoever |
5
Könnyű
What personal protective equipment is required when working with NH₃?
| No requirements |
| Safety goggles, gloves and respiratory protective equipment |
| Only a safety helmet |
| Workwear only |