Replacement of Vane Axial Fan 2A15B1

TM 11-5820-695-35

(3) Secure the fan to the cabinet by

in component to replacement power supply chassis

tightening the four screws still connected to the four

assembly 2A1A5.

synclamps.

(3) Repeat steps (1) and (2) for regulators

(4) Mount air exhaust filter 2A15MP2 to

2A1A2, 2A1A4, and 2A1A3.

the top of the cabinet and tighten the four thumbscrews.

(4) Position and push power supply 2A1

(5)

Reinstall power supply (para -40 (4)

into electrical equipment cabinet 2A15 until guide pins

and connectors are mated.

through (7)).

(5) Alternately tighten the two power

(6)

Restore power to R-1467/GRC-144

supply captive screws two turns at a time until power

(para 338b).

supply 2A1 is securely fastened to electrical equipment

3-42. Replacement of Capacitor 2A15C1 (fig. 3-19)

cabinet 2A15.

Removal.

(6) Release meter panel assembly

(1)

Remove power from R-1467/GRC-

2A15A2 and position downward until it rests against

144 (para 38a).

electrical equipment cabinet 2A15.

(2) Remove power supply 2A1 (para

(7) Secure

meter

panel

assembly

342a(2) through (5).

2A15A2 by tightening the two meter panel captive

screws.

(3) Remove the two nuts securing

capacitor mounting bracket to rear wall of the cabinet,

(8) Set the POWER ON/OFF switch on

and remove the capacitor mounting bracket.

meter panel assembly 2A15A2 to ON.

(4) Tag and unsolder two wires

3-41. Replacement of Vane Axial Fan 2A15B1 (fig. 3-

connected to capacitor 2A15C1 terminals, and remove

19 and 3-34)

the capacitor.

Removal.

Replacement.

(1) Remove power from R-1467/GRC-

(1) Insert the replacement capacitor into

144 (para S-38a).

the cabinet and solder the wires removed in a(4) above.

(2) Remove power supply 2A1 (para 3-

(2) Insert capacitor mounting bracket

40a (2) through (5)).

over the replacement capacitor, and then place the

(3) Loosen the four air filter thumbscrews

capacitor mounting bracket on the threaded studs on

(fig. 3-20) securing air exhaust filter 2A15MP2 to top of

rear wall of the cabinet.

electrical equipment cabinet 2A15 and remove the filter.

(3) Replace and tighten the two nuts

(4) While supporting fan 2A15B1 from

securing the capacitor mounting bracket to rear wall of

inside of the cabinet, loosen, but do not remove, the

the cabinet.

four screws securing the fan to the cabinet. Each screw

(4) Replace power supply 2A1 (para 340

has a synclamp nut which clamps the fan to the cabinet

a(4) through (7)).

frame.

(5)

Restore power to R-1467/GRC-144

(5) Tilt the fan upward to slide it past the

(para 3-38b).

synclamps and then lower the fan into the cabinet.

3-43. Replacement of Power Transformer 2A15A4T1

(6) Tag the wires connected to the fan

(fig. 3-19)

terminals. Remove the three screws that secure the

wire lugs to the fan terminals. The lugs are soldered to

Removal.

the tagged wires.

(1) Remove power from R-1467/GRC-

(7)

Remove the fan from the cabinet.

144 (para 338a).

Replacement.

(2) Loosen the two meter panel captive

screws on meter panel assembly 2A15A2 (fig. 3-17

(1) Check that AIR FLOW arrow, printed

on side of the replacement fan, is pointing upward, and

(3) Position meter panel assembly 2A15A2

insert the replacement fan into upper right section of the

upward and lock -it in the upward position by use of the

cabinet. Connect wire lugs to the fan terminals, using

panel locking latch (fig. 3-19).

the three screws removed in a(6) above.

(4) Disconnect coaxial cable 2A15W1

(2) Position the fan against the top wall of

(fig. 3-24) from the OUTPUT J2 connector on tunnel

the cabinet between the four synclamps which clamp the

fan to the frame of the cabinet.

3-67