Mercedes-Benz Zetros 2020 Operating Instructions Manual page 150

Operating fluids
148
When renewing the coolant, ensure that it con-
tains 50% antifreeze/corrosion inhibitor by vol-
ume. This corresponds to antifreeze protection
down to Ò37 †.
Do not exceed 55% by volume (antifreeze
down to approximately Ò45 †). The heat dissi-
pation and antifreeze may otherwise be nega-
tively affected.
If there is a loss of coolant, do not top it up by
using only water, also add an approved corro-
sion inhibitor/antifreeze agent.
The water in the coolant must meet certain
requirements which are often met by drinking
water. The water must be treated if its quality
does not meet the required standards.
Do not mix the water and the antifreeze/anti-
corrosion additive in the coolant circuit. After-
wards, fill the coolant expansion tank with the
mixture.
Avoid mixing different corrosion inhibitor/anti-
freeze agents.
Observe the Mercedes-Benz Specifications for
Service Products, Sheet No. 310.1.
Further information about operational and
road safety can be obtained from any
Mercedes-Benz Service Centre.
Refrigerant
Important safety notes
Your vehicle's climate control system is filled
with R‑134a refrigerant and contains fluorina-
ted greenhouse gas.
The instruction label regarding the refrigerant
type used can be found on the driver's door.
Only the refrigerant R‑134a and the PAG
!
oil approved by Mercedes-Benz may be
used. The approved PAG oil may not be
mixed with any other PAG oil that is not
approved for R-134a refrigerant. The climate
control system may otherwise be damaged.
Maintenance work such as refilling refrigerant
or replacing component parts may only be car-
ried out at a qualified specialist workshop. All
applicable regulations as well as SAE standard
J639 must be adhered to.
Always have all work on the climate control
system carried out at a qualified specialist
workshop.
Refrigerant instruction label
Example: refrigerant instruction label
Symbols for hazard and service informa-
:
tion
Refrigerant filling capacity
;
CO equivalent of the refrigerant used
=
2
Applicable standards
?
PAG oil part number
A
GWP (global warming potential) of the
B
refrigerant used
Refrigerant type
C
Symbols : advise you about:
possible dangers
R
having service work carried out at a quali-
R
fied specialist workshop
Diesel fuels
Important safety notes
G
WARNING
Fuel is highly flammable. Improper handing
of fuel creates a risk of fire and explosion.
Avoid fire, naked flames, smoking and creat-
ing sparks under all circumstances. Switch
off the engine and, if applicable, the auxiliary
heating before refuelling.
G
WARNING
Fuels are poisonous and hazardous to
health. There is a risk of injury.
Be sure to avoid swallowing fuel or letting it
come into contact with skin, eyes or cloth-
ing.