3
Safety instructions for working on the system
Working on the system
■
Isolate the system from the power sup-
ply, e.g. by removing the separate fuse
or by means of a mains isolator, and
check that it is no longer live.
Note
In addition to the control circuit there
may be several power circuits.
Danger
Contact with live components can
result in severe injuries. Some
components on PCBs remain live
even after the power supply has
been switched off.
Prior to removing covers from the
appliances, wait at least 4 minutes
until the voltage has completely
dropped out.
■
Safeguard the system against recon-
nection.
■
Wear suitable personal protective
equipment when carrying out any work.
Danger
Hot surfaces and fluids can lead to
burns or scalding.
■
Before maintenance and service
work, switch off the appliance and
let it cool down.
■
Do not touch hot surfaces on the
appliance, fittings or pipework.
!
Please note
Electronic assemblies can be dam-
aged by electrostatic discharge.
Before beginning work, touch
earthed objects, such as heating or
water pipes, to discharge any static.
Work on the refrigerant circuit
Refrigerant R1234ze is a colourless,
odourless gas that displaces air.
■
R1234ze is mildly flammable (safety
class A2L according to ISO 817).
■
R1234ze belongs to fluid group 2
(according to the Pressure Equipment
Directive 2014/68/EU).
Danger
Direct contact with liquid and gas-
eous refrigerant can cause serious
damage to health.
■
Avoid direct contact with liquid and
gaseous refrigerant.
■
Wear protective gloves/protective
clothing/eye protection/face pro-
tection (P280).
■
Wear respiratory protection
(P284).
■
If exposed or concerned: Get
medical advice/attention
(P308+P313).
■
Protect from sunlight and store in
a well ventilated place
(P410+P403).
Details in brackets pursuant to
Regulation (EC) No 1272/2008
Danger
Contains gas under pressure; may
explode if heated (H280).
Do not heat the refrigerant circuit
from the outside.
Safety instructions
Safety instructions
(cont.)
6136003
