Maintenance/Cleaning - Fetco CBS-71A User Manual

Brew & Bypass Orifices:
Removing or replacing the brew orifice is necessary if a longer or shorter brew cycle is desired, or if mineral deposits
have accumulated inside of it, reducing the flow of water.
There is only one size bypass orifice (.206"), which may also be restricted by mineral deposits.
To change either orifice:
•Remove the brew basket and brew basket drawer.
•Grasp the sides of the spray pan with both hands and turn it counter-clockwise. Being careful not to drop it,
continue turning it with both hands until it comes completely off.
•The brew orifice is located in the center of the threaded piece that held the spray pan. The bypass orifice is
located to the right and to the rear of the brew orifice. Both orifices are stainless steel. Do not remove the
brass fitting located in the same area This is the vent from the water tank.
•Removal of either orifice requires a 11/16 inch wrench.
•Replace or clean the orifices and reassemble all of the parts.
Whenever the brew orifice is changed to a different size, the bypass timer must be changed to keep the same
percentage of bypass. See the bypass timer chart to determine the correct setting.

Maintenance/Cleaning

Daily
Before brewing, always verify the cleanliness of the brew baskets and dispensers.
At the end of the day, remove the brew basket and wipe the bottom of the spray pan with a cloth to remove the coffee
oils that have collected.
Brew & Bypass Orifices
The flow of water through the brew and bypass orifices may gradually become restricted by the accumulation of
mineral deposits. The orifices should be inspected periodically and cleaned if necessary.
To remove the orifices:
•Remove the brew basket and brew basket drawer.
•Grasp the sides of the spray pan with both hands and turn it counter-clockwise. Being careful not to drop it,
continue turning it with both hands until it comes completely off.
•The brew orifice is located in the center of the threaded piece that held the spray pan. The bypass orifice is
located to the right and to the rear of the brew orifice. Both orifices are stainless steel. Do not remove the
brass fitting located in the same area This is the vent from the water tank.
•Removal of either orifice requires a 11/16 inch wrench.
•Replace or clean the orifices and reassemble all of the parts.
Transfer Systems: End of the day cleaning
•
Ensure that the dispenser, brew basket, and holding tank cover are in place, and that all old coffee has been
drained from the holding tank and dispensers.
•
Ensure that the Transfer, Automatic switch is in the "OFF" position, and that the ready light is on.
•
Unlock and turn the rinse jet valve on the front of the holding tank to the "on" position.
•
Press and hold the Rinse (or Flush) button on each brew head for approximately 1 minute.
•
Press and hold the manual transfer button on each side until the dispensers are empty.
•
Turn the rinse jet valve to the "off" position.
•
Make one full brew on each side, without coffee in the brew basket, and the Automatic Transfer in the OFF
position.
•
Manually transfer approximately ½ of the water to the holding tank. This will flush hot rinse water through
the entire system, leaving only clean, fresh water in the pump and lines. Leave the remaining water where it
stands until the system is needed again.
•
Remove the brew basket and wipe the area above the basket with a cloth to remove the coffee oils that have
collected.
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