TM 5-3431-225-15
(3) Connect a voltrneter to the secondary
leads (numbers 31 and 32). The meter should
(1) Refer to figure 4-12 and replace the
read 30 volts.
air coupling coil.
(4) Connect a voltmeter to the secondary
(2) Install the high frequency panel (para
leads (numbers 41 and 42). The meter should
read 15 volts.
(5) If the meter reading is other than that
4-30. Control Transformer
specified above, the transformer must be replaced.
(1) Remove the top and sides from the
(1) Refer to figure 4-13 and install the con-
welding machine (para 3-26).
trol transformer.
(2) Install the top and sides on the welding
(2) Refer to figure 4-13 and remove the
machine (para 3-26).
Control transformer.
b. Testing.
4-31. Main Transformer
(1) Connect the 230 volt power source to
the input lead No. 16 and the center tap lead
a. Removal.
No. 40.
(1) Remove the top and sides from the
welding machine (para 3-26).
(2) Connect the voltmeter to the secondary
(2) Remove the range and polarity switch
leads (numbers 1 and 4). The meter reading
assembly (para 4-17).
should be 115 volts.
