General safety references

The compressor is under pressure!
warning

The compressor is under pressure!

Serious injuries are possible.

Depressurise the compressor!

Wear safety goggles!

Surface temperatures of more than 60°C or below 0°C.
caution

Surface temperatures of more than 60°C or below 0°C.

Risk of burns or frostbite.

Close off accessible areas and mark them.

Before performing any work on the compressor: switch it off and let it cool down or warm up.

Special safety references for handling refrigerant blends

Avoid air penetration in the system!
warning

Avoid air penetration in the system!

All refrigerant blends contain at least one flammable component. A critical shift of the ignition point can occur under high pressure and evacuating when a high proportion of air is present.

Always charge the system with liquid refrigerant!
warning

Always charge the system with liquid refrigerant!

When vapour is taken from the charging cylinder shifts in concentrations may occur.

The use of refrigerant blends with a significant temperature glide is not recommended for plants with flooded evaporators.

The use of refrigerant blends with a significant temperature glide is not recommended for plants with flooded evaporators.

A large concentration shift is to be expected in this type of evaporator, and as a result also in the circulating refrigerant mass flow.