Replacing The Water Form Roller And Metering Roller - Ryobi 3302H Operation Manual

Chapter 4 Replacing the Supplies
3. Replacing the Water Form Roller and Metering Roller
Metering roller
1) Mounting the water form roller
Generally the rubber roller shrinks over time and the diameter becomes
smaller.
Especially, if using isopropyl alcohol, the shrinking will be intensified
and the hardness will be increased 20 to 30 % a year. As the hardness
increases, the characteristics of the roller are lost and the dampening
solution supply balance will become unstable. This will result in stains
being caused and excessive emulsification occurring.
The life of the rubber roller is usually from 6 months to one year after
starting initial printing on the press. After this period has passed, replace
the roller. For more details, please ask your service technician.
(Note) 1. The replacement period of the roller will differ depending on
the press using condition.
2. When doing printing with large solids or when requiring high
printing quality, the replacement period of the roller will be
quicker.
(Reference) When keeping an extra roller for replacement, if the roller is
not properly stored, the roller may be damaged. So please
store it following the points below.
1. Do not put the roller surface directly on the floor. It should
be held by the shaft section as shown in the illustration
on the left.
2.
Store the roller in a cool [below
2o·c
(68.F)] dark (no
light) place.
(Note) Remove the water rider oscillating roller before mounting or removing the water form roller.
Mount the water form roller after setting the water form roller release
lever (1) at the
It]
position. After mounting it, set the lever at
the
IE]
position.
«NOTICE»
The side of the shaft with the gear is the operation side. If reversing the
water form roller mounting direction, the press may be damaged.
Align the water form roller shaft notch with the stopper and push the
roller in fully and then tum it slowly until there is a response until the
roller cannot be turned anymore.
Maintenance Edition - 41