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Author
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Topic: cleaning and basic maintenance time table
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Glen Rich
Film Handler
Posts: 55
From: Nedlands, Western Australia
Registered: Feb 2002
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posted 06-12-2006 10:36 PM
The following is the maintenance/service schedule guidelines issued by me for the Boxes that I'm responsible for...
DAILY:
Check projection head for dirt, dust and caked emulsion, and clean as required (NOTE: projector and platter systems should be scrupulously clean before any film is run).
Run projector, check oil levels and add if required.
Check lenses for dust, dirt and clean as required.
Turn on and check SPECO and Christie long play film platter systems, (especially check all lay on rollers), for dirt, dust and caked emulsion, clean as required. Check the center pay out unit of the platter system for dirt, dust and caked emulsion and clean as required.
The Xenon lamp in each projector is to be started at least 5 minutes prior to first scheduled screening to alleviate any flicker as the lamp is “warming up”.
After each screening the projection head of each projector has to be cleaned of caked emulsion and dust then threaded for the next session.
Each day all bench tops, MUT’s, lamp houses, and sound racks are to be dusted, and each day the port glass for each projector and slide machine is to be cleaned inside and out.
Any repair to film or equipment is done as required.
WEEKLY:
Check and clean Optics on each of the projectors sound heads. (NOTE: if a print is particularly “dirty” this may need to be done daily.)
Check and adjust Dolby levels for each Cinema.
Each plate of the SPECO and Christie long play film platter systems in all Bio boxes to be cleaned with cleaning fluid and cleaning clothes, (NOTE: no abrasives are to be used.) .
Dismantle and clean 35mm film tape splicer using white spirits or similar cleaning fluid, (i.e., shellite) and a stiff brush. The Splicer must be gum free to operate effectively. Clean out all ‘sprocket holes’ in the tape splicer.
MONTHLY:
Before servicing isolate equipment from mains power by switching off circuit breakers and removing fuses. Turn OFF rectifiers. Always double check.
All the lay on rollers on each of the SPECO and Christie long play film platters are to be taken off their shafts checked for wear and damage and each half cleaned of all accumulated caked emulsion and dust with cleaning fluid and a stiff brush, each shaft is also to be cleaned before the rollers are replaced. (NOTE: the rollers must be taken off their shafts to be cleaned effectively.)
Oil is to be applied to each cinemas projector:
To the sound drum shaft and the pay out and take up spindle shafts.
To the clutch felts on each of the take up spindle shafts.
To the lamp exhaust fan motor on the outside of the Strong X-60B lamp house’s. (NOTE: the oil points are at either end of the motor on top.)
Also to the internal lamp house exhaust fan motors in the Strong Super Lume-X lamp houses in both cinema 1&2. (NOTE: the oil points are at both ends at the top of the motors. Take care to clean up any excess and spills.).
QUARTERLY:
Before servicing isolate equipment from mains power by switching off circuit breakers and removing fuses. Turn OFF rectifiers. Always double check.
Each projector is given a full service entailing:
Draining each projector head of oil and replacing with clean T60 turbine oil, or equivalent projector oil. (NOTE: using another or heavier duty type of oil is not recommended as it will severely affect the projectors performance.)
From Each Projector Head Remove the Following:
All film guide rollers
All lay-on rollers
All sprockets
All drive belts
Film gate, backing plate, and aperture plate
The guide rollers, lay-on rollers and sprockets are to be cleaned with white spirits (or similar cleaning fluid, ie, Shellite) and a stiff brush, then dried with a cleaning cloth.
The shafts that they were removed from are to be cleaned of any dirt, dust and greased with Vaseline or similar lubricant. Then replace the lay-on rollers and sprockets. (NOTE: all shafts are to be greased without exception.)
The film gate is to be dismantled and the interior cleaned of accumulated emulsion dust and dirt using a stiff brush and cleaning fluid, then re-assembled and the pressure bands tension checked and adjusted if required.
The backing plate is to be cleaned with white spirits and a stiff brush to remove any accumulated caked emulsion and dirt, then dried and polished with a cloth.
The aperture plate is to be cleaned with white spirits and a stiff brush and dried with a cloth.
The drive belts are to be checked for cuts and burrs. Excess accumulated grease from the projection head is to be removed. (NOTE: if there is any doubt as to the reliability of any belt for continued long term operation they are to be replaced.)
For Each Projection Head:
Each Projector head is to be given a thorough clean with cleaning fluid and cloth, to remove accumulated caked emulsion dust and dirt from normally inaccessible areas of the head, before replacing removed parts.
Remove the outer of each sound drum and carefully clean the sound head and arm of accumulated emulsion dust and dirt. Clean the back of the sound drum.
Check the spring tension of all torque springs.
Check lens turret for ease and smoothness of operation and adjust if required.
Check dash-pot oil level and add oil if required. (NOTE: only dash-pot oil is to be used.)
The Air filter on each of the Rank/Cinemeccanica projectors is to be replaced.
For each Lamp-House (including Slide Machines):
Open and remove the Xenon lamp to a bench top. (NOTE: REMOVING AND REPLACING XENON LAMPS IS DANGEROUS DUE TO POSSIBLE EXPLOSION HAZARD. Safety glasses, gloves and jacket must be used, no exceptions. The Xenon is to be placed in a safety cover as it’s removed from its lamp-house fitting.)
Clean the interior of the lamp house removing all accumulated dust.
Clean and check the Mirror/reflector. Clean using warm soapy water, and then polish with cleaning cloth.
Check blowers and filters and clean as required.
Replace the Xenon; take care to check all connectors and fittings are correct and tight. (NOTE: in all Lamp house’s take all care to have the positive end of the Xenon pointing towards the screen.)
Completion of Quarterly Service:
Check and make sure the only spare parts are those that have been replaced.
Check the oil level in each projector head. (NOTE: take care not to over or under fill as damage can occur.)
Run each projector to check operation and;
Run Dolby and Surround test films to check operation of amplifiers for and the operation of Left, Centre, and Right speakers (main and hi-frequency) and Surround speakers in all cinemas.
Whilst running Dolby test film, check and adjust Dolby levels as required.
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