SIGMA projetor - Manual (Page 42)

MAINTENANCE INSTRUCTIONS
4.11
Annual Maintenance for the Remote Controls
Tools required for complete maintenance of Models 692, 693, 664 remote controls:
• 11/16 in open-end wrench for the control conduit swage fittings.
• 1/2 in open-end wrench for the 5/16 in control crank handle bolt.
• Slot screwdriver for the 10-32 remote control crank screws.
• 3/8 in wrench for the 10-32 control crank stop nuts.
• 0.050 in Allen wrench for the 4-40 set screw on the odometer knob on the Model 693 and Model 664
remote control units.
• Control cable run-off prevention (stop) spring removal tool if required.
• Model 550 connector NO GO gauge for wear check of the control cable connector.
• X4 to X7 magnification glass for control cable inspection if required.
• Micrometer for measurement of control cable diameter.
Materials required for complete maintenance of Models 692, 693, 664 remote controls:
• Clean solvent: fresh mineral spirits recommended for cleaning and degreasing remote control
mechanism, control cable and cleaning the control conduits internally. (Follow manufacturer’s safety
precautions for use, handling, storage and disposal.)
• Large pan for cleaning and degreasing the control crank assembly and control cable.
• Clean lint-free rags and detergent to clean the exterior of the control conduits.
• Mil-spec grease, MIL-G-23827B (or C), MIL-PRF-23827C (or equivalent radiation resistant grease)
for lubricating the control cable and control crank mechanism.
• Stainless steel, brass or synthetic bristle brush to clean control crank parts and the control cable.
• Compressed air source and hand nozzle to blow dry the control cable internal Teflon™ liner of the
remote control conduits after cleaning.
• 3M™ yellow polyvinyl tape (or black polyvinyl electrical tape) for repair of cuts in remote control
conduits.
• Safety
glasses.
Remote Control Maintenance Requirements
1 Disconnect the remote control unit from the exposure device.
2
Straighten out the remote control housings on a work surface, then remove the control cable from the
remote control conduits (661 safety connector side) until it stops (a stop spring on the end of the
control cable). Rubber gloves are recommended for this operation. Do not use excessive force during
removal of the control cable. During removal of the control cable, it should be coiled in loops no less
than a 12 in (305 mm) diameter and secure.
3
Disconnect the remote control conduit fitting from the control crank using the 11/16 in open-end
wrench. Remove the stop spring from the end of the control cable and pass the control cable through
the crank gear to completely disengage. Label the remote control conduits for proper assembly after
the servicing.
4
Pull the remaining control cable through the 661 safety connector and secure.
5
Using the 11/16 in open-end wrench, remove both remote control conduits from the 661 safety
connector and the control crank.
6
Thoroughly clean the control cable using a brush in a degreaser bath. Use compressed air to blow off
residual solvent after the degreasing operation. Be sure to follow the solvent manufacturer's safety
recommendations.