Vaillant aroTHERM Series, Operating Instructions Manual

Page: 73 / 212

Inspection and maintenance 11
0020257297_02 aroTHERM Installation and maintenance instructions
71
▶
Do not use abrasive cleaners. Do not use solvents. Do
not use any cleaning agents that contain chlorine or am-
monia.
11.6 Checking/cleaning the evaporator
1. Visually check the evaporator from the rear by looking
through the air inlet grille.
2. Check whether there is dirt between the fins or whether
depositions have adhered to the fins.
Condition : Cleaning required
▶
Remove the top casing. (
→
Page 62)
▶
Remove the left-hand side casing. (
→
Page 62)
▶
Clean the gaps between the fins using a soft brush. In
doing so, avoid fins being bent.
▶
If required, straighten out any bent fins using a fin comb.
11.7 Checking the fan
1. Remove the top casing. (
→
Page 62)
2. Remove the air outlet grille. (
→
Page 62)
3. Turn the fan by hand.
4. Check that the fan runs freely.
11.8 Checking/cleaning the condensate
discharge
1. Remove the top casing. (
→
Page 62)
2. Visually check the condensate tray and the condensate
discharge pipe from above.
3. Check whether dirt has accumulated on the condensate
tray or in the condensate discharge pipe.
Condition : Cleaning required
▶
Remove the left-hand side casing. (
→
Page 62)
▶
Clean the condensate tray and the condensate dis-
charge pipe.
▶
Check that the water can drain freely. Poor approx. 1 l
water into the condensate tray.
11.9 Checking the refrigerant circuit
1. Remove the top casing. (
→
Page 62)
2. Remove the cover from the service valves. (
→
Page 64)
3. Remove the right-hand side casing. (
→
Page 62)
4. Remove the front casing. (
→
Page 62)
2
1
5. Check whether the components and pipelines are free
from dirt and corrosion.
6. Check that the covering caps (1) on the internal main-
tenance connection are positioned securely.
7. Check that the covering cap (2) on the external main-
tenance connection is positioned securely.
8. Check whether the thermal insulation for the refrigerant
pipes is undamaged.
9. Check whether the refrigerant pipes have been routed
without any kinks.
11.10 Checking the refrigerant circuit for tightness
Applicability: Products with a refrigerant volume of
≥
2.4 kg, Except Den-
mark
OR Products with a refrigerant volume of
≥
1.0 kg, Denmark
1. Ensure that this annual leak-tightness test in the refri-
gerant circuit is carried out in accordance with the ordin-
ance (EU) Nr. 517/2014.
2. Remove the top casing. (
→
Page 62)
3. Remove the cover from the service valves. (
→
Page 64)
4. Remove the right-hand side casing. (
→
Page 62)
5. Remove the front casing. (
→
Page 62)
6. Check whether the components in the refrigerant circuit
and the refrigerant pipes are free from damage, corro-
sion and oil leaks.
7. Check the components in the refrigerant circuit and the
refrigerant pipes for tightness. Use a refrigerant leak
detector that is suitable for detailed checking.
8. Document the result of the leak-tightness test in the
service book.