Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 5

Safety instructions
A CO or powder extinguisher must be
■
2
to hand in the following cases:
Refrigerant is being drained.
–
Refrigerant is being topped up.
–
Soldering or welding work is being
–
carried out.
Display signs prohibiting smoking.
■
Danger
Escaping refrigerant can lead to fire
and explosions that result in very
serious injuries or death.
Do not drill or apply heat to a
■
refrigerant circuit filled with refrig-
erant.
Do not operate Schrader valves
■
unless a fill valve or extraction
equipment is attached.
Take measures to prevent electro-
■
static charge.
No smoking! Prevent naked
■
flames and sparks. Never switch
lights or electrical appliances on
or off.
Components that contain or con-
■
tained refrigerant must be label-
led, and stored and transported in
well ventilated areas in accord-
ance with the applicable regula-
tions and standards.
Danger
Direct contact with liquid and gas-
eous refrigerant can cause serious
damage to health, e.g. frostbite
and/or burns. There is a risk of
asphyxiation if it is breathed in.
Prevent direct contact with liquid
■
and gaseous refrigerant.
Wear personal protective equip-
■
ment when handling liquid and
gaseous refrigerant.
Never breathe in refrigerant
■
vapours.
(cont.)
Danger
Refrigerant is under pressure:
Mechanical loading of lines and
components can cause leaks in the
refrigerant circuit.
Do not apply loads to the lines and
components, e.g. by supporting or
placing tools.
Danger
Hot and cold metallic surfaces of
the refrigerant circuit may cause
burns or frostbite if skin contact is
made.
Wear personal protective equip-
ment to protect against burns or
frostbite.
!
Please note
When refrigerant is being removed,
hydraulic components may freeze.
Drain heating water from the heat
pump beforehand.
Danger
Damage to the refrigerant circuit
can cause refrigerant to enter the
hydraulic system.
After completion of the work, vent
the hydraulic system correctly.
When doing so, ensure the area is
sufficiently ventilated.
Safety instructions
5