TM 10-5410-221-24
(b) J-4 60 cycles.
(d) Connect battery leads to pins A and E of 60
Hertz receptacles J-4. 28 volt emergency light shall be
Pin C (common) to
120 V.
on, and area lights shall be off.
either pins B or D.
(e) Operate ceiling light toggle switches S1 and S2
Pin B to pin D ------------------ 240 V.
to OFF position. 28 volt emergency light shall go off.
No voltage between
(f) Turn off 28 volt power by removing battery
pins A or E and
leads and restore 60 Hertz power.
either pins B, C,
(8) Close CB8 circuit breaker.
D or shelter ground.
(9) Close CB4 and CB13. Check presence of
120 volt, 60 Hertz power at ceiling receptacles J23, J24,
(c) J-17 surgery light external power.
J25 and J26. Use 120 volt lamp connected to a standard
twist lock cap.
(10) Close CB5 and CB12. Check presence of
Pin E continuity to
120 volt, 60 Hertz power at wall receptacles J9, J11, J27
ground.
and J29 using a 120 volt lamp connected to a standard
Close CB 9 circuit
twist lock cap.
breaker.
(11) Close CB6 and CB7. Check presence of
Pin C to pin D ------------------ 120 V.
400 Hertz, 120 volt power at wall receptacles J10, J12,
J28 and J30. Use 120 volt lamp connected to a twist
(4) Remove 400 Hertz power and close circuit
lock cap for 400 Hertz receptacles.
breaker CB 15. Close switches S8, S9, and S10 toggle
(12) Close CB11 and CB14. Measure power
switches (up position) on the power distribution box and
at receptacles J5 and J6 at base of the power distribution
check for continuity between J-17. pins A and B and J-
box. Pins A, B and C on J6 are connected to the three
18, J-19, and J-20 as follows.
phase and pin D to neutral of 400 Hertz power. Read
208 volt between phases and 120 volt between any
J-17 Pin A to J-18 Pin 3
phase and neutral.
J-17 Pin B to J-18 Pin 1
J-17 Pin A to J-19 Pin 3
J5 and J6
J-17 Pin B to J-19 Pin 1
J-17 Pin A to J-20 Pin 3
Pin A to Pin B ------------------- 208 V.
J-17 Pin B to J-20 Pin 1
Pin A to Pin C ------------------- 208 V.
Pin B to Pin C ------------------- 208 V.
(5) Restore 400 Hertz power.
Pin C to Pins A, B
120 V.
(6) Plug connectors P 21 and P 22 into
or C.
receptacles J-21 and J-22. Close CB1 (28v) circuit
breaker and CB8 (400 Hertz) circuit breaker. Turn
(13) Close CB3 at 60 Hertz X-ray receptacle J-
fluorescent light switches S1 and S2 to the ON position.
7, located at base of power distribution box, measure
Area fluorescent fixtures shall light. Remove P 21 and
240 volt between pins A and C. Measure 120 volts
P22 from J-21 and J-22 and make the following voltage
between pins A and C and pin B. Pin D is ground and
checks.
should show continuity to grounding screws on base of
power distribution panel.
J-21 Pin 13 to Pin 14 ---------- 120 V.
(14) Install jumper between pins A and B of
J-22 Pin 13 to Pin 14 ---------- 120 V.
receptacle J-36. Install a jumper between pins F and G
Pin 15 common to
of receptacle J-31.
Close CB10, humidifier circuit
ground.
breaker.
(7) With fluorescent area lights turned on
perform the following tests.
(a) Remove dummy plug P8. Area lights shall go
off.
(b) Replace dummy plug P8 and trip off 400 Hertz
input power by opening CB8 circuit breaker.
(c) Connect two 12 volt batteries in series to
supply 24 VDC. Remove 60 Hertz power.
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