TM 1-1520-238-23
Change 2
12-175
12.56.
BLADE DE-ICE CONTROLLER ADJUSTMENT - continued
e. Perform main blade heater element resistance
measurements.
(1) Measure and record resistance for five blade
heater elements between adapter test points
(7). Measure values to the nearest 10 MIL-
LIOHMS. Use ohmmeter.
Measure Between Test Points
TP1 to TP5
TP2 to TP5
TP3 to TP5
TP4 to TP5
TP6 to TP5
f. Remove calibration test adapter (3) from rotor
blade (1).
(1) Detach calibration test adapter (3) connector
P1 (6) from blade heater receptacle J1 (5).
(2) Attach de-ice power connector (4) to blade
heater receptacle J1 (5).
(3) Lockwire connector (4) and receptacle (5) to-
gether. Use wire (item 222, App F).
g. Repeat steps c. thru f. for each remaining
blade (1).
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