Cirrus DESIGN SR22 Pilot Operating Handbook page 329

Cirrus Design
SR22 / SR22T
Metering Pump Priming - Serials before G3 Wing
If air enters the system due to the fluid tank running dry during system
operation, the metering pump may not be capable of priming itself. To
draw fluid from the tank to prime the metering pump manifold and
remove any entrapped air between the metering pump and the fluid
tank:
1. Locate de-icing fluid drain on LH side of fuselage belly just forward
of fluid tank.
2. Sample de-icing fluid until fluid stream shows no evidence of air
bubbles for at least three seconds.
3. Set ICE PROTECT Mode Switch to MAXIMUM and verify
evidence of fluid at each of the protected locations.
4. If necessary, repeat steps 2 and 3
Metering Pump Priming - Serials with G3 Wing
If air entered the system due to the fluid tank running dry during
system operation, it may require several cycles of the priming pump to
prime the metering pumps.
In the event that the metering pump cannot prime itself, the priming
pump may be activated by cycling the ICE PROTECT System Switch,
10s ON, 10s OFF, to draw fluid from the tank to prime the metering
pump manifold and remove any entrapped air between the metering
pump and the fluid tank.
System Priming
For optimal performance, the system should be primed on the ground
by performing the preflight inspection to verify all protected surfaces
wet-out fully.
P/N 13772-115
Revision 10: 09-20-12
Section 9
Supplements
19 of 20