EADS Socata TB 20 Pilot's Information Manual page 752

SUPPLEMENT 41
"TKS" SYSTEM
SECTION 8
SOCATA
HANDLING, SERVICING AND MAINTENANCE
PROLONGED OUT OF SERVICE CARE
During flyable storage
Ensure that the de-icing fluid tank contains at least the minimum
recommended quantity of fluid (refer to Section 7) and that all system
components are filled with fluid.
Operate airframe
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propeller pump for at least two minutes at DE-ICE speed,
intervals between operations should not exceed two months, for the first two
years from new.
At the same time exercise the windshield pumps for several periods not
exceeding 5 seconds each.
The two month interval between operation may be increased to a period not
exceeding six months, after the two year period unless any of the system
plastic tubing has been renewed (see also § "Pump priming").
Re-check tank contents.
NOTE:
Complete system priming after prolonged out of service may take
as
long
as
15 to 20 minutes. Priming prior to each flight is recommended to maintain the
system ready for immediate use and to facilitate insect removal from the
leading edges.
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9.41.18
November 15,1998
Revision 2