73
Checking the refrigerant circuit for leaks
Danger
R410A is a non-poisonous gas
that displaces air. Unregulated
escape of refrigerant R410A in
enclosed spaces can result in dif-
ficulties in breathing and suffoca-
tion.
■ Ensure adequate ventilation in
enclosed rooms.
■ Observe and adhere to regula-
tions and guidelines about han-
dling refrigerant.
Danger
Direct contact with refrigerant
can harm skin.
Wear safety goggles and protec-
tive gloves when working on the
refrigerant circuit.
Check all connections for refrigerant
leaks:
■ All swaged connections of the refrig-
erant lines between the internal and
the external unit.
■ Check all solder joints and threaded
fittings of the refrigerant lines in the
internal and external units.
Note
Work on the refrigerant circuit must
only be carried out by qualified person-
nel (in accordance with Ordinances EC
842/2006 and 303/2008).
Filling and venting on the secondary side
!
Please note
To prevent equipment damage,
protect electrical components
from escaping liquids.
Note
Before filling the system, observe
VDI 2035 sheet 1.
A
1.
Open any on-site non-return valves
installed.
2.
Check the pre-charge pressure of the
expansion vessel and adjust if
required (see page 76).
3.
Fill (flush) and vent the secondary cir-
cuit via an on-site connection.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5724 152 GB
Service
Summary of Contents for AWS 104
Page 5: ...5 Certificates Declaration of conformity 119 Keyword index 120 Index Index cont 5724 152 GB...
Page 87: ...87 Opening programming unit 3 2 1 2x Troubleshooting Repairs cont 5724 152 GB Service...
Page 89: ...89 Removing separating plate 1 2 Troubleshooting Repairs cont 5724 152 GB Service...
