Dampener Setup

Set-up Information for the Stealth-Aire

Ryobi 3302H & Ryobi 3304H/HA Dampening System

Running and maintaining the Stealth Dampener is amazingly simple but to make sure you start off on the right foot we will go into detail to explain how the Stealth Dampener is set up. We recommend that all roller pressure settings are made with ink on the rollers. This will give you a better visual and allow you to measure the pressure stripe width. Do not use the ink fountain when inking up the press, take an ink knife and manually lay a healthy bead of ink on the top ink distributor roller in the press. Turn on the press and engage the dampener. Tighten the metering roller until inked up. The reason for this process is that the dampener needs to be inked up evenly at initial start-up regardless of where the ink fountain is set.

Setting Dampener Pressure

It is important that the ink form rollers are set to factory recommended pressures between the internal inker oscillators and the printing plate. Note: When setting water form engage dampener transfer roller using blue button on top cover operator side, then raise rollers and check stripe. This will show you the actual stripe on the plate while running.

Referring to the Stealth Adjustment Procedure side view drawing,

With the ink forms resting on the plate and the dampener in the "ON" position, the pressure stripe between the Stealth Transfer Roller to the Stealth Oscillator Roller should be parallel and be between 3/16" min & 1/4"max. This pressure stripe is set with the Pressure Stripe Adjusting Screw. The final pressure stripe between the Stealth Metering Roller and the Stealth Transfer Roller will be whatever is required to print with the least amount of moisture. Screw the thumb screws in on each end of the metering roller clockwise to least two or three turns after first contact is made with the transfer roller. Engage the dampener, let run 8 or so revolutions, drop 1st ink/water form to plate, lower the ink form rollers to the plate. Start printing and adjust the metering screws for the best print. Clockwise less moisture / Counterclockwise for more moisture. Keep in mind that you will need less ink when running a Stealth Dampening System. While printing, screw the metering roller thumb screws in until the plate is only slightly shiny. When satisfied, stop press, screw the metering roller thumb screws in one full turn clockwise. Move the locking collars down and tighten with 3/32" Allen wrench, tighten well. Turn the metering roller thumb screws counter-clockwise one turn. This gives you adjusting leeway in and out. Now when you first , ink up the press, engage the dampener and screw the metering roller thumb screws in until the stop, then back out one full turn, this is your starting point for the metering roller pressure. When running Silver Master type plates, it is recommended to pre-moisten the plate at start-up and on re-starts. The Stealth Dampening System will carry much less moisture than other dampening systems and will require less in to print the same density, thus shorter drying time and reducing or eliminating setoff and sheet curl.

WASHING UP - LEAVE PLATES ON

Drain water out of the pan, back out the Metering Roller until separated from the Transfer Roller. Bring the ink rollers down to plate, engage the dampener and start the wash-up. Do not add wash-up solution to the transfer roller (only the inker rollers). When the rollers are mostly clean, screw the metering roller thumb screws in on one side until it just touches the transfer roller, then screw in the other side the same. Ink on metering roller will transfer into the ink train. This wash-up process will help keep wash-up solution & ink out of the water pan. After the wash-up process is finished be sure to separate the Metering Roller and Transfer Roller.

Remember this: Small presses need ink with viscosity. If you can pour the ink out of the can - you have the wrong ink. Use the right fountain solution and mix it correctly, if it is too strong it can break down the ink and emulsify. Only run enough moisture to keep the plate clean.

Eventually the rollers will shrink a little - no problem. Just re-adjust the transfer to the oscillator back to parallel and be between 3/13"min & 1/4"max. If you are having to keep opening the water up little by little chances are the transfer to oscillator stripe is getting thin and will not transfer moisture properly.

For additional information or troubleshooting call Duplicator Technologies, Inc:

(800) 331-9789

Indianapolis and surrounding areas:

(317) 545-2347

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