Vyaire VELA, Service Manual

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Chapter 5: One-Year P.M. Procedure
5-7
33373-001 Version A
NOTE
When the batteries are disconnected, the system will automatically re-set the Battery Charge
Controller and will initiate a 28-hour recharge cycle upon re-connection. During this period, the DC
status light will remain red for approximately 2 hours and amber for 16
–18 hours, then it will go to
green and continue its trickle charge until complete.
If the charge cycle does not follow this sequence, please contact Vyaire tech support for further
assistance.
Follow the directions in Chapter 3: Disassembly and Reassembly and remove the right panel with
the power supply. There are four screws securing the panel from the upper right back of the
ventilator; one in the front top and three on the bottom edge of the panel.
Pull the panel out from the rear first, then ease it towards the back & tilt out. Lay the assembly flat.
The Mufflers are now accessible.
5.4.8 Replacing the muffler/filter assemblies.
To remove & replace the muffler/filter Assemblies P/N 10365, first pull out the two silicone elbows
from the muffler assembly end cap P/N 20714. Leave the elbows installed in the base manifold of
the ventilator, this prevents the screws from inadvertently dropping inside the manifold.
Figure 5-9. Turbine Muffler with Elbows
Remove the six screws on the end cap. Discard the screws. Remove the end cap and discard the
end cap.
Figure 5-10. Muffler with End Cap Removed
Remove the silicone elbows from the base manifold and set aside. Using needle nose pliers, firmly
grasp the metal grid inside the Right side muffler housing assembly. Pull the muffler straight out of
the housing assembly using a clockwise twisting motion while pulling out the filter will help break a
seal that has been created.