The owner's manual/operating instructions that I purchased was the original factory document and it was in at least three and maybe more languages. I no longer have it because I sold the tape recorder and included the owner's manual/operating instructions and a service/repair manual that I bought on ebay for the new owner.
Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Great price, Quick delivery, the document was very usefull A+++++++++++++++
Text excerpt from page 14 (click to view)
Venting
The hood is more effective when used in the extraction setting (ducted to the outside). The ducting used must be manufactured from fire retardant material.
Ducting
The ducting must be fire retardant 125mm (5ins) in diameter and the length should be no more than: � 3 metres with one 90° bend � 2 metres with two 90° bend Bends of more than 90° will reduce the efficiency of the hood and reduce the airflow. 1. Remove the two screws on top of the canopy and secure the spigot, fit the spigot (A) on the rectangular air outlet on the top of the canopy using the two screws. Connect the ducting to the ducting spigot (A) using suitable clamps (not supplied). The charcoal filter is not required when installed for extraction. (To remove see maintenance and cleaning section).
2.
3.
Recirculation
The charcoal filter must be fitted for recirculation. When the hood is installed in the recirculation mode, the air is recirculated into the kitchen through the two venting grilles located on either side of the lower Ushaped section.
To fit the recirculation mode
1. Fit the recirculation spigot (F) to the rectangular outlet on top of the canopy and push it down ensuring that the 4 lugs are fitted into the holes. Fit the charcoal filter inside the canopy.
