C.E. Niehoff & Co. N3012-N3210/N3107-N3121/N3237-N3211 Reg Test Procedures - Manual (Page 2)

Page 2
TG66B
A
B
C
D
F-
IGN
GND
B+
+
-
30VDC
ADJUSTABLE
POWER SUPPLY
+28VDC
N3012 REGULATOR
LAMP
30V 1W MIN.
E
A
B
C
D
E REG TURN OFF
SW1
(IGN)
SW2
(MOMENTARY)
*AMPHENOL MS3111E14-5S-027 OR EQUIVALENT
R1
45Ω
11W
1. SET UP AS DEMONSTRATED IN SCHEMATIC DIAGRAM. SW2 IS MOMENTARY, NORMALLY OPEN.
2. MAKE SURE IGN SWITCH (SW1) IS OFF.
3. TURN ON ADJUSTABLE DC POWER SUPPLY.
4. SET POWER SUPPLY TO 24.0 VDC.
LAMP SHOULD BE OFF. IF LAMP IS ON, REGULATOR IS DEFECTIVE.
5. TURN ON IGN SWITCH.
LAMP SHOULD NOW BE ON. IF LAMP IS NOW OFF, REGULATOR IS DEFECTIVE.
6. RAISE VOLTAGE ON ADJUSTABLE POWER SUPPLY .
LAMP SHOULD TURN OFF WHEN POWER SUPPLY VOLTAGE IS RAISED HIGHER THAN
REGULATOR SET POINT (27.0 -29.0 VDC). IF NOT, REGULATOR IS DEFECTIVE.
7. BRIEFLY PRESS SW2. LAMP SHOULD BE OFF WHILE SW2 IS PRESSED, AND TURN
BACK ON WHEN BUTTON IS RELEASED. IF NOT, REGULATOR IS DEFECTIVE.
N3012 REGULATOR TEST SETUP DIAGRAM
N3012/N3210 Regulators
General Test Procedures