Miller Travel Master SB-10D Manual del usuario - Página 25

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SECTION 8 – MAINTENANCE & TROUBLESHOOTING

IMPORTANT: Every six months inspect the labels on

the unit for legibility. All precautionary labels must be

maintained in a clearly readable state and replaced

when necessary. See Parts List for part number of pre-

cautionary labels.

8-1.

INSPECTION AND UPKEEP

Usage and shop conditions will determine the frequency

and type of maintenance required. Inspect equipment

as follows:

WARNING:

ELECTRIC SHOCK can kill;

WELDING

WIRE

wounds; HOT SURFACES can burn skin.

Do not touch live electrical parts.

Shut down Carriage control and welding

power source, and disconnect input power

employing lockout/tagging procedures be-

fore inspecting or servicing.

Lockout/tagging procedures consist of remov-

ing input plug from receptacle, padlocking line

disconnect switch in open position, removing

fuses from fuse box, or shutting off and red-tag-

ging circuit breaker or other disconnecting de-

vice.

Do not point gun toward any part of the body,

any conductive surface, or other personnel.

Allow equipment to cool before touching.

Every six months, clean dust, dirt, and weld spat-

ter from the carriage auxiliary equipment, and es-

pecially from the carriage pinion gear and beam

gear rack.

IMPORTANT: Do not lubricate gears and gear racks.

Lubricants promote dust and dirt accumulation.

Every month inspect carriage pinion gear and

beam gear rack for alignment and wear. If gear is

not aligned in rack, adjust position of gear accord-

ing to Section 3-4.

Every three months, check carriage and auxiliary

equipment for loose or damaged components.

Repair or replace components as required.

Repair or replace, as required, all hose and cable;

give particular attention to frayed and cracked in-

sulation and areas where it enters equipment.

Remove grease and dirt from components and

moisture from electrical parts and cable.

8-2.

OVERLOAD PROTECTION (Figure 6-1)

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down Carriage control and welding

power source, and disconnect input power

employing lockout/tagging procedures be-

fore inspecting or servicing.

can

cause

puncture

Lockout/tagging procedures consist of remov-

ing input plug from receptacle, padlocking line

disconnect switch in open position, removing

fuses from fuse box, or shutting off and red-tag-

ging circuit breaker or other disconnecting de-

vice.

IMPROPER FUSE can damage unit.

Be sure replacement fuse is same size, type,

and rating (see Parts List).

A. Motor Protection Circuit Breaker CB1

WARNING: Read and follow safety informa-

tion at beginning of Section 8-2 before pro-

ceeding.

The carriage drive motor is protected from damage due

to overload by circuit breaker CB1. CB1 is an automatic-

trip type breaker. If CB1 opens, the motor will shut down,

and the Carriage Control will immediately stop operat-

ing. If CB1 opens, locate and correct the problem, and

manually reset CB1.

B. Fuse F1

WARNING: Read and follow safety informa-

tion at beginning of Section 8-2 before pro-

ceeding.

Fuse F1 protects the unit from damage due to a short or

overload. If this fuse should open, the unit would be

completely inoperative. If F1 opens repeatedly, contact

the nearest Factory Authorized Service Station. To re-

place fuse F1, proceed as follows:

Depress and rotate fuse holder cover counter-

clockwise.

Pull out fuse with cover when fuse holder cover is

free.

Insert new fuse into fuse holder cover.

Install fuse with fuse holder cover back into unit.

Depress and rotate fuse holder cover clockwise

until cover is secure.

8-3.

REINSTALLATION OF HUB ASSEMBLY (Fig-

ure 8-1)

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down Carriage control and welding

power source, and disconnect input power

employing lockout/tagging procedures be-

fore inspecting or servicing.

Lockout/tagging procedures consist of remov-

ing input plug from receptacle, padlocking line

disconnect switch in open position, removing

fuses from fuse box, or shutting off and red-tag-

ging circuit breaker or other disconnecting de-

vice.

OM-889 Page 21