Operator's Weekly Preventive Maintenance Checks and Service Chart

Completeness --------------------

Check to see that equipment is com-

Appx B.

plete.

Exterior surfaces ----------------

Clean exterior surfaces, including panel

Para 3-7.

and meter glasses. Check both meter

g l a s s e s for cracks.

O p e r a t i o n - - - - - - - - - - - - - - - - - - - - - - - - Operate equipment. Output voltage and

Para 2-6 and 2-7.

output current meters should indi-

c a t e output voltage and output cur-

r e n t , respectively.

3-6. Operator's Weekly Preventive Maintenance Checks and Service Chart

Warnings:

1. Be careful when working on the 115-or 230-volt ac line connections Serious injury or DEATH

may result from contact with these terminals.

2. Low-voltage high-amperage current is prestmt at output connections and at connections in-

side equipment. Do not touch connections or remove cabinet cover until equipment is removed from

power eourah Reenergize power supply before performing any maintenance.

Cable

---------------------------

Inspect cable for frayed, chafed, or

Refer to higher category

o f maintenance.

cracked insulation. Replace any con-

nector that is broken, arced, or worn

excessively.

Inspect exposed metal surface for rust

Refer to higher category

Metal

surfaces

-------------------

or corrosion. Clean and touchup paint

o f maintenance.

required.

from the case; use a cloth dampened (not wet)

3-7. Cleaning

with the cleaning compound.

The exterior surfaces of the power supply

c. Remove dust or dirt from the plug and

should be free of dust, dirt, grease, and fungus.

jack with a cotton swab stick lightly dampened

a. Remove dust and loose dirt with a clean,

with the cleaning compound.

soft cloth.

Caution: Do not press on the meter face

Warning: Prolonged breathing of cleaning

(glass) when cleaning; the meter may become

compound is dangerous; make sure adequate

damaged.

ventilation is provided. Cleaning compound is

flammable; do not use near a flame. Avoid

d. Clean the front panel, meters, and knob;

contact with the skin; wash off any that spills

use a soft, clean cloth. If dirt is difficult to re-

on the hands.

move, dampen the cloth with water; mild soap

may be used for more effective cleaning.

b. Remove grease, fungus, and ground-in dirt

3-2