Test - TM-5-4120-347-140094

TM5-4120-347-14

(a) Apply 28VDC to terminals X1 and X2; X1 is positive, X2 is negative.

(b) Check continuity across terminals A1 and A2; B1 and B2, and C1 and C2. The multimeter must show

that contacts are closed.

(2) Relay K4.

(a) Apply 28VDC to terminals 2 and 9; 2 is positive, 9 is negative.

(b) Check continuity across terminals, 1 and 3; 5 and 11; and 10 and 8.

1 and 4, 5 and 11, and 10 and 8 are closed.

(d) Remove 28 VDC power. Multimeter should indicate that terminals 1 and 4,5 and 6, and 10 and 7 are

closed and that terminals 1 and 3, 5 and 11, and 10 and 8 are open.

(3) Time delay relay K1.

(a) Connect multimeter to terminals 2 and 3.

(b) Apply 28DVC to terminals 2 and 5; Terminal 1 is positive, 5 is negative. Multimeter must show

continuity across terminals 1 and 3 within 30 3 seconds of applying voltage.

(4) Phase sequence relay K5.

(a) This relay will energize only when all three phases are in proper sequence and when input voltage

and frequency are within 10%. of that specified (208 volt, 60 hertz).

(b) Check that power connections are properly connected and that input power is within 10% of that

specified.

c. Removal.

(1) Tag and disconnect the wires to the relay.

(2) See figure 4-27 and remove the attaching hardware.

(3) Pull relay from junction box.

d. Installation.

(1) Mount relay using hardware indicated on figure 4-27.

(2) See figure 4-5 wiring diagram and tags and connect leads. Remove the tags. if relay has solder

connections be sure to protect solder joints with heat shrink or equal insulation tubing.

(3) Carefully slide the junction box into place and secure with seven screws and lock washers.

(4) See paragraph 4-27c and figure 4-18 and install the control module.

(5) Install the top front cover.

(6) Connect power at power source.

4-58