SECTION III PRELIMINARY OPERATIONS

TB 55-4920-428-35

SECTION III

PRELIMINARY OPERATIONS

6. Preliminary Instructions.

a. The instructions outlined in this section are preparatory to the calibration process. Personnel

should become familiar with the applicable sections before beginning the calibration.

b. Items of equipment used in this procedure are referenced within the text by common name

and item identification number as listed in tables 3 and 4. For the identification of equipment referenc-

ed by item numbers prefixed with A, see table 3, and for prefix B, see table 4.

HIGH VOLTAGE is used or exposed during the performance of this

calibration. DEATH ON CONTACT may result if personnel fail

to observe safety precautions.

NOTE

Unless otherwise specified, all controls and control settings refer to the

TI.

7. Equipment Setup.

a. Check TI pressure gages and Nullmeters for mechanical ZERO and adjust if required.

NOTE

Electronic unit is

P/N

145GS2783

and

Hydraulic

unit

145GS278-2.

b. Remove TI electrical instrument panel from case and remove three screws holding back of chassis

and swing out for excess.

c. Connect TI power cable J8 to TI power connector and autotransformer (A1) and connect to 115

vac, 60 Hz power source.

d. Adjust autotransformer for 115 vac output.

e. Set TI power to ON and DEPRESS TI LAMPSTEST. TI panel lights will illuminate.

f. Set TI CYCLE MOTOR to OFF and SOLENOID SHUT-OFF to CLOSED.