Vaillant aroTHERM plus - Checking the Protective Zone; Closing the Purging Valve; Cleaning the Product; Checking the Evaporator, Fan and Condensate Discharge

Inspection and maintenance 12
0020297937_01 aroTHERM plus Installation and maintenance instructions 129
12.4.6 Removing the air inlet grille
D
C
3×1
A
2×2
3×1
B
E
2×1
1
2
1. Disconnect the electrical connection to the temperature
sensor (1).
2. Remove the two cross-members (2) as shown in the
figure.
3. Remove the air inlet grille as shown in the figure.
12.5 Checking the protective zone
▶ Check whether the defined protective zone is being main-
tained (→ Page 115)in the area close around the product.
▶ Check that no subsequent construction-related changes
or installations that violate the protective zone are imple-
mented.
12.6 Closing the purging valve
Condition: Only during the first service
▶ Remove the top casing. (→ Page 128)
▶ Remove the right-hand side casing. (→ Page 128)
1
▶ Close the purging valve (1).
12.7 Cleaning the product
▶ Only clean the product when all of the casing sections
and covers have been installed.
▶ Do not clean the product with a high-pressure cleaner or
a direct jet of water.
▶ Clean the product using a sponge and hot water with
cleaning agent.
▶ Do not use abrasive cleaners. Do not use solvents. Do
not use any cleaning agents that contain chlorine or am-
monia.
12.8 Checking the evaporator, fan and
condensate discharge
1. Remove the top casing. (→ Page 128)
2. Remove the left-hand side casing. (→ Page 128)
3. Remove the air outlet grille. (→ Page 128)
4. On the evaporator, check whether there is dirt between
the fins or whether depositions have adhered to the
fins.
Condition: Cleaning required
▶ 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.
5. Turn the fan by hand.
6. Check that the fan runs freely.
7. Check whether dirt has accumulated on the condensate
tray or in the condensate discharge pipe.
Condition: Cleaning required
▶ 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.
8. Ensure that the heating wire is inserted into the con-
densate discharge tundish.
12.9 Checking the refrigerant circuit
1. Remove the top casing. (→ Page 128)
2. Remove the right-hand side casing. (→ Page 128)
3. Remove the front casing. (→ Page 128)