TM 11-6130-243-12
3-4. Operator's Daily Preventive Maintenance Checks and Services Chart
References
Procedures
Item to be Inspected
Appx II.
Completeness . . . . . . . . .
See that the equipment is complete.
1
Exterior surfaces. . . . . . . . . .
Clean the exterior surfaces, including the panel and meter
2
glasses. Check both meter glasses and indicator lens for
cracks.
Connectors . . . . . . . . . . . . . . . . Check the tightness of all connectors.
3
While making the operating checks (items 5 through 8),
Controls and indicators . . . . . . .
4
observe that the mechanical action of each switch is
smooth, and free of external or internal binding, and that
there is no excessive looseness. Also, check the meters for
sticking or bent pointers.
Connections . . . . . . . . . . . . . See that the jumper leads are connected properly for input
5
power.
. . . . . . . . . . . . . Operate the equipment. The indicator lamp should glow,
Operation
6
The DIRECT CURRENT VOLTS and DIRECT CUR-
RENT AMPERES meters should indicate output voltage
and current, respectively.
VOLTAGE ADJUST switch
Set the VOLTAGE ADJUST switch as necessary. Note
7
that the voltage indication on the DIRECT CURRENT
VOLTS meter increases as the switch is set clockwise.
Set to off (down) position. Note that the indicator lamp
8
extinguishes.
35. Operator's Weekly Preventive Maintenance Checks and Services Chart
References
Item to be respected
Procedures
1
Cables
Inspect cables for chafed, cracked, or frayed insulation. Re-
....................
place connectors that are broken, arced, stripped, or worn
excessively.
Metal surfaces
2
Inspect exposed metal surfaces for rust and corrosion. Clean
..............
and touch up paint as required.
3-6. Organizational Monthly Preventive Maintenance Checks and Services Chart
Item to be inspected
Procedures
References
Inspect the terminals on the power transformer, All nuts
1
Transformer terminals
None.
.....
must be tight. There should be no evidence of dirt or
corrosion.
Resistors and capacitors . . .. . Inspect resistors and capacitors for cracks, blistering, or
2
None.
other detrimental defects.
3
G a s k e t s and insulators . . . . . . Inspect gaskets, insulators, bushings, and sleeves for cracks,
None.
chipping, and excessive wear,
Tap board . . . . . . . . . . .. . .
4
Inspect the tap board for loose terminals, cracks, and other
None.
detrimental defects.
5
Interior . . . . . . . . . . . . . . . . .
Clean the interior of the chassis and cabinet.
None.
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