TM 11-6625-680-14-2
as listed on the packing slip. If a packing slip is
b. Removing Contents.
not available, check the equipment against the
(1) Cut and remove the metal straps.
list in paragraph 1-9. Report all discrepancies in
(2) Remove the nails that secure the sides of
accordance with TM 38-570. The equipment
the wooden case to the mounting base.
should be placed in service even though a minor
(3) Lift the wooden packing case off the
assembly or part that does not affect proper
base.
functioning is missing.
(4) Remove the packing material and lift the
c. Check to see whether the equipment has
tester off the base.
b e e n modified. If the equipment has been
(5) Stow all loose material in the wooden
modified, the MWO number will appear on the
packing case.
front panel, near the nomenclature plate. Check
also to see whether all MWO's current at the time
a. Inspect the equipment for damage that may
the equipment is placed in use have been applied.
have occurred during shipment. If the equipment
NOTE
has been damaged, fill out and forward DD Form
Current MWO's applicable to the
6 (para 1-3 b).
equipment are listed in DA Pam 310-7.
b. Check to see that the equipment is complete
Section II. OPERATOR'S CONTROLS AND INDICATORS
and Indicators
Haphazard operation or improper settings of the
The following chart lists the controls, meters,
c o n t r o l s can damage the tester; t h e r e f o r e ,
selectors, connectors and indicators of the tester
knowledge of the function of the controls, meters,
and indicates their functions. Refer to figure 1-3
selectors and connections before operating the
for the control or indicators location on the tester.
t e s t e r important (para 2-4).
Numbers in parentheses represent item number
on figure.
Functions
Control or Indicator
D. C. POWER ON-OFF switch (16) . . . . . . . . . . . . . . . . . . . . . . . . When set to ON, connects 28-volt dc input power to tester.
LIVE CIRCUIT switch (14) . . . . . . . . . . . . . . . . . . . . . . . Completes circuit between input of tester and regulators of
inverter.
+28V. and D. C. input connections (20) . . . . . . . . . . . . . . . . Input power terminals.
Cable set assembly connector (J101) (17) . . . . . . . . . . . . . . . . . . . . . Receptacle for input and output connections to inverter under
test.
28V. ON indicator (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . With 28-volt dc source connected to tester, indicator glows
green when the D.C. POWER ON-OFF switch is set ON.
0.5 AMP fuse (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protects A. C. VOLTS meter from overload.
0.15 AMP fuse (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protects D. C. VOLTS meter from overload.
5 AMP fuse (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Two fuses. One protects A. C. AMPS meter from overload.
The other fuse protects live circuit from overload.
FUSE BLOWN indicator (15) . . . . . . . . . . . . . . . . . Pilot light glows red when 5-ampere fuse in the live circuit
opens.
LOAD CONTROL autotransformer (18) . . . . . . . . . . . . . . . . . . . Adjusts load applied to inverter under test.
A. C. AMPS meter (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indicates ac output current of inverter under test. A. C.
AMPS meter scale reads either from 0 to 50 amperes, 0 to 10
amperes, 0 to 5 amperes, or 0 to 1 ampere when A. C.
AMMETER RANGE selector is on either the 50, 10, 5, or 1
position, respectively.
A. C. AMMETER RANGE selector (10) (4 position switch)
Selects 1, 5, 10, 50 D.C. AMPS meter scale as appropriate for
inverter under test. The 50, 10, 5, and 1 positions connect
the respective A. C. AMPS meter scale to read a maximum
of amperes indicated by the setting.
D. C. AMMETER RANGE selector (19) (5 position switch)
Selects 10, 20, 100, 200 D. C. AMPS meter scale as ap-
propriate for inverter under test. When in START position,
bypass D. C. AMPS meter is bypassed to protect it from
starting current surges. The 200, 100, 20, and 10 positions
