Starrett Optical Projector HF750

Remove the two screws securing the cover

Remove the surface illumination lamp cover

Raise the wire handle of the lamp ejection clip on the housing to lift the lamp pins out of their connectors, and remove the used lamp

Insert the new lamp into the housing

Refit the lamp cover and secure it with the two screws

Sign off on the lamp replacement

CAUTION! Do not touch the surfaces of the lens.

Slacken the two screws securing the clamps (2)

Secure the clamps and tighten the securing screws

Sign off on the lens replacement

CAUTION! Do not finger the surface of the new lamp; handle it in its protective wrapping. Any fingermarks will be fired into the surface of the quartz envelope, reducing the output and life of the lamp. If the envelope is accidentally finger marked, remove the marks immediately with a cotton wool swab moistened with methanol.

Remove the 3 securing screws from the profile lamp cover and lift the cover clear.

Remove the used lamp by holding it carefully between finger and thumb and pulling it gently upwards until the terminal pins are clear of the connectors (4).

Remove the new replacement lamp from its box and with a sharp knife cut approximately 6 mm (1/4 in) from the bottom of the protective wrapping, allowing the terminal pins to protrude.

Holding the lamp by its protective wrapping, insert the terminal pins into the connectors (4).

Check that the lamp is vertical and securely located, and dispose of the protective wrapping.

Refit the lamp cover and secure it with the 3 screws.

Sign off on the lamp replacement

Warning: This procedure requires trained personnel with PPE!

End cap successfully withdrawn?

Engagement handle unscrewed and removed?

Allen key inserted into the socket lockscrew and screw released?

Internal nut held in position with the key?

Bearing mount/collet rotated to give the required tension?

Engagement handle and end cap refitted?

Sign off on the latch block adjustment

CAUTION! Do not use polishes, or window cleaning aerosols and liquids for cleaning lenses. Do not touch the inner surfaces, (those facing away from the workpiece), of the projection or condenser lens. The projection lens is the most critical; a finger mark on the inner surface will degrade the quality of the projected image.

• Remove any accumulated dust with a photographic lens brush.

• Remove any grease or fingermarks with a new photographic cleaning tissue, which may be moistened with methanol if necessary.

CAUTION! The mirror should be cleaned as infrequently as possible. It is recommended that cleaning is performed by an authorised service engineer. Do not finger the surface of the mirror.

• If necessary, remove loose dust with a photographic lens brush.

• If necessary, remove grease and finger marks with surgical quality cotton wool moistened with methanol. Apply the cotton wool lightly, and then polish the surface with clean dry surgical quality cotton wool.