Basic Operation Instructions for all Overhead Projectors

• Place the projector on a flat, steady surface.

• The farther the projector is from the screen, the larger the image.
  Overheads with a standard 14" lens should be about 8 - 10 ft from the screen for a 6' wide image.

• Connect the power cord to an electrical outlet. If the projector is on a cart with an electrical extension, check the plugs for both the projector and the cart.

NOTE: Most projectors use a 3-pronged, grounded plug. The use of adapters is not recommended. However, if no grounded outlet is available, have a trained electrician install the adapter and check the wiring to be certain there is no shock hazard. CAUTION: Improper use of grounded plugs (including removing the third pin) may cause damage to the unit and personal injury to the operator.

• Turn on the main power switch.

• Place transparency material on the platen (the glass plate on the top of the projector housing).

• Adjust the focus and the screen alignment.

Adjust Focus with the focusing knob. Most focusing knobs are attached either to the lens head or the arm. The lens head moves up or down the support post as the focusing knob is turned.
Adjust the image vertically on the screen by tilting either the head at the top of the arm or the mirror on the head. Adjust the image horizontally by moving the projector right or left.

• If the lamp burns out, the projector has a Quick Change Lamp lever. Some are easy to see, the one in this picture is well hidden. Look for an instruction sign on the projector, too.

Turn off the lamp. Find the lever. Move it to the opposite position. Turn on the lamp. See individual projector information for specifics. Call CIS at 956-8075 for assistance or replacement lamp.

Bell and Howell or Eiki Quick Change

Elmo Model 3550 Quick Change

Elmo Model 355 Quick Change

• Acetate Rolls

  Overhead projectors in selected auditoriums are equipped with a roll of clear transparent material that can be written on using the CIS supplied grease pencils. Water soluble markers may also be used to write or draw on the acetate.
  
  *** DO NOT use permanent markers because the acetate rolls are cleaned and recycled. ***

  Most acetate rolls are installed so hand-written material rolls off the top of the projector and clean acetate rolls on from the bottom. Material can be returned to the platen by rolling the acetate back to that section.

Special Instructions for Elmo HP-L3550 Deluxe Projectors

• Tilt Adjustment

The front legs of this projector also serve as tilting adjustments for a clearer image if the screen is not adjustable for keystoning. These legs adjust independently.

• Quick Change Lamp

Turn power off. Slide the quick change lever located on the front of the projector to the left or the right. Call CIS when the Quick Lamp Change has been used so a new spare lamp can be installed.

Special Instructions for Elmo HP-L355 Deluxe Projectors

• Tilt Adjustment

The front legs of this projector also serve as tilting adjustments for a clearer image if the screen is not adjustable for keystoning. The legs adjust independently.

• Quick Change Lamp

Push the quick lamp-change lever on the bottom front of the projector slightly backward and slide it sideways. Don't use the Lamp Brightness Control. The knobs are removed.

• Call CIS when the Quick Lamp Change has been used so a new spare lamp can be installed.

Special Instructions for Bell & Howell and Eiki Projectors

 

• Quick Change Lamp

Turn the power off. Lift the Lamp Change Interlock Handle on the front of the projector case. (Some models do not have an Interlock Handle.) Move the Quick Change Lever to the opposite position. Release the Interlock Handle. Turn the power on.

• Call CIS (956-8075) to report changing lamp so a new lamp can be installed.

rev. 8/3/06