Section VIII. MAINTENANCE OF WIRING SYSTEM

Figure 4-13. Camera components, copyboard end. - TM-5-3610-220-140126

Figure 4-15. Testing for open circuit at main junction box

TM-5-3610-220-14 Camera Copying Mobille Process 208-Volt 3 Phase 60 Hertz Consolidated International Model 1969 NSN 3610-00-400-7588 Manual
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Support bracket

Locknut

Connector nipple

Screw, pan hd, /4-18 x /2

Figure 4-14. Transformer with cover removed.

Section VIII. MAINTENANCE OF WIRING SYSTEM

across terminal No. 4 (4, fig. 4-15 and G, fig. 1-11 ). If the

4-32. Description

needle of the volt-ohmmeter does not deflect, the circuit is

The four-wire electrical supply from the portable! generator is

open. Repeat test for terminals No. 2 and No. 3 (2 and 3, fig.

designed to deliver a 208 volt, 60 cycle, 3 phase source from

4-15 and L2 and L3, fig. 111) maintaining second test lead

which a 120 volt supply can be obtained between any phase

across terminal No. 4 (4, fig. 4-15 and G, fig. 1-11).

line and the fourth ground wire. Accordingly, some of the

equipment such as the carriage drive motors, operates from the

b. Test for Open Circuit in Arc Lamp Network (fig. 4-16

3 phase 208 volt supply, whereas others, such as the arc lamps

and fig. 4-7). Disconnect power source from arc lamp at the

and the turbo-compressor motors, are balanced on the 120 volt

connector cable socket (7, fig. 4-16 and fig. 4-7). Remove the

supply legs. All wires are numbered to facilitate tracing lines

rear cover plate (8, fig. 4-11) from the arc lamp to expose the

and servicing the electrical equipment.

transducer assembly (3 fig. 4-16 and fig. 4-7). Set the volt-

ohmmeter in the XI mode. Apply one test lead to transducer

4-33. Wire Testing and Repair

terminal No. 2 or No. 3 (2 or 9, fig. 416 and fig. 4-7) and the

a. Test for Open Circuit in Camera Network (fig. 4-15 and

other test lead across socket contact No. 2 and No. 3 (4, fig.

fig. 1-11). Disconnect power source at the main junction box

4-16 and A, fig. 47). If the needle of the volt-ohmmeter does

(fig. 4-15 and fig. 1-11). Set all switches of the end item in the

not deflect the circuit is open. Similarly, test transducer

"OFF" position. Remove cover from the main junction box to

terminal No. 1 (1, fig. 4-16 and fig. 4-7) with socket contact No.

expose terminal connections. Set the volt-ohmmeter in the XI

1 (5, fig. 4-16 and C, fig. 4-7) and transducer terminal No. 4 (8,

mode. Apply test lead across terminal No. I in the main

fig. 4-16 and fig. 4-7) with socket contact No. 4 (6, fig. 4-16

junction box (1, fig. 415 and LI, fig. 1-11) and place the other

and D, fig. 4-7).

test lead

4-18

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