Start Up; Troubleshooting - Vaillant VAM 3-050 W2N Manual De Instalación

MAINTENANCE
WARNING!
a
Do not proceed to the next step until a satisfactory
evacuation of the installation has been completed.
Fig. 12.4 Low pressure manometer reading with the low valve
closed: checking for leaks.
WARNING!
a
Danger of malfunction and leaks.
Ensure that the service valves on the outdoor unit are
closed.
12.3

Start up

Fig. 12.5 Filling the installation.
Legend
1 Two-way valve
2 Actuation faucet
• Open the two-way valve by twisting the allen key 90º
anticlockwise and close it after 6 seconds. The installation
will be filled with coolant.
• Check the installation again for tightness:
- If there are leaks see section 12.4.
- If there are no leaks, continue.
• Remove the service manifold.
• Open the two and three-way service valves by twisting the
allen key anticlockwise as far as it will go.
1
3
Fig. 12.6 Opening of the two and three-way valves.
- 20 -
Legend
1
2
3
• Seal the two and three-way service valves with the
Fig. 12.7
Legend
1
2
• Connect the unit and run it for a few moments checking that
12.4
1
If the event of a gas leak, proceed as follows:
2
• Recover the remaining refrigerant from the system.
- You will need the correct refrigerant recovery unit and
a
• Check the flaring joins.
• Repair the leak, replace indoor and outdoor parts which are
• Carry out the vacuum (section 12.2).
• Fill the unit with the correct weight of refrigerant using
• Proceed to check for leakage as described above.
2
Three-way service valve
Allen key (not supplied) to open valves
Two-way shut off valve
corresponding protective covers.
1
Protective covers.
Service hole lid
Two and three-way valve covers
it carries out its functions correctly (for more information see
the user manual).

Troubleshooting

refrigerant reclaim cylinder to achieve this.
WARNING!
Never release refrigerant into the environment!
Refrigerant R410A is a harmful product for the
environment.
the cause of the leak as necessary.
accurate and calibrated electronic scales.
2
VAI3-MWN-I_EN - 09/14 - Vaillant