1.9 Serial number Identification
HET H- V 05 001
Year Code
Month Code
Batch Code
Example above: 2021, May, rst unit of the month (batch). The year code advances one letter in alphabetical
order for each succeeding year.
1.10 Warranties
A. Hartzell Engine Technologies LLC (HET) oers a Limited warranty with each new, overhauled, or rebuilt regulator
assembly or component (parts) it sells through it’s distribution system. NO expressed or implied warranty exists
when repairing, overhauling, or rebuilding any assembly or component using this instruction except as it may apply
to any new HET replacement part purchased. If you suspect that any warranty applies to the regulator assembly,
it must be returned through an authorized HET distributor in a manner prescribed by that specic distributor. The
aected regulator must be received by the factory fully assembled and not altered in any way for disposition by
the HET warranty department. (Warranty shall be denied for any regulator received altered, modified, or
disassembled.)
B. The HET Limited warranty policy in aect for your voltage regulator was delivered with the unit at the time of
purchase. (As the Warranty policy is revised from time to time, you must check the policy delivered with your unit
for specic terms and conditions should a warranty condition occur. If needed for reference, obtain the most current
policy from the authorized HET distributor nearest you -or- visit our website at www.hartzell.aero.
R1224 Regulator
Installation Instruction
12-1001 24-30-01
Rev. M: 01 Dec. 2021 Page: 1-5
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