Technical data

Preventive Maintenance

Mechanical Parts

Inspection

Local

Control/Motor

Drive Controller

Clean mechanical parts by ﬁrst removing dust, dirt and other loose contaminants with a

scraper, stiff brush (bristle, or wire in the case of rust or corrosion), or cloth or compressed

air at 25 to 40 psi. Any accumulated imbedded dirt, corrosion, grease or oil deposits that

require further cleaning may be removed with a bristle or wire brush and a cleaning solvent

such as trichlorethylene or equal. After cleaning, allow cleaned parts to dry for 10 to 15

minutes before placing the equipment into operation.

The frequency of inspection is contingent upon the user’s individual standards and the

operational environment in which the earth station is located. However, a visual inspection

of the earth station components should be performed st least semi-annually. Where

there are no established wear limits, perform a visual inspection to locate worn or damaged

parts which could cause improper functioning of the earth station. It is recommended

that the mechanical and electrical inspection be performed on the assembled or partially

disassembled equipment to determine the extent of disassembly required prior to

completely disassembling a suspected malfunctioning component or module. In the

absence of any special inspection requirements, operational tests are the most effective

means in isolating parts and assemblies requiring further inspection. Any condition

noted during inspection that may preclude continued proper operation of the earth station

prior to the next scheduled inspection should be noted. The discrepant condition

should be corrected (repaired or replaced) immediately or at the conclusion of the

inspection procedure.

Inspection of the local control/motor drive controller conforms generally to standard visual

inspection procedures on electromechanical equipment. In addition to these standard

procedures, perform the following checks and visual inspections for the speciﬁc conditions

noted:

WARNING

Care must be taken to avoid electrical shock. Failure to heed warning could result in injury or

death.

• Check the main panel for illegible and indistinct panel markings.

• Connect the detachable hand controller assembly (local control) for visible signs of

damage such as cracked housing, damaged connector/bent pins, cuts or damage

to cable jacket insulation, etc. Examine selector switches for damage and proper

actuation

movement.

• Inspect all wiring and cables for discoloration and burned insulation, dirt, breaks,

security of connection and other signs of deterioration. Examine connections for dirt,

ﬂux, corrosion and mechanical defects. Check for loose or broken lacing and cut,

brittle, abraded, frayed or cracked insulation.

• Examine connectors for corrosion, broken inserts and stripped threads. Check

connector shells for distortion and dents, and contact pins for bends, misalignment

or other deformities. Check connector inserts for carbon tracking indicating arc-over.