R O L L S I Z E G R A D U A T I O N
To Achieve Quality Flatwork Finish an Ironer Must Have Proper Roll Size Graduation
Roll size graduation is the mechanism which makes each succeeding padded roll on a flatwork ironer larger. The principle is based upon the fact that all padded rolls on older ironers turned at the same RPM (revolution per minute). Making the diameter of the padded rolls larger produced increasing surface speed through the ironer. This increasing surface speed pulled the linen through the ironer, keeping the linen tight against the chest, in the area between the rolls. This tightness against the chest improved quality and drying efficiency.
Below is an illustration of roll pressure mechanism as found on older flatwork ironers, and a procedure for adjusting roll size graduation.
Steps To Adjust Pressure Screws
1. Remove all Pressure Screws, clean & lubricate.
2. Replace Pressure Screws.
3. With Ironer Running, Apply Ironer Pressure until Small Pin (5) is loose. CAUTION: Care should be taken since ironer is running.
4. Tighten all Pressure Screws by hand until "hand tight." When "hand tight," you should be able to feel the springs and caps move as the roll turns.
5. Tighten Lock Nut (10) on Pressure Screw of last roll (#8).
Then, Using Wrench:
6. Apply pressure daily until Small Pins are free.
The method outlined above gives minimum graduation to the padded rolls, and allows them to operate in the chests under their own weight only, without excessive pressure being applied. This is referred to as "light" pressure, and gives long life to the covers, padding and tapes. The roll graduation is slight, but in the majority of cases it is sufficient to produce enough pull on the work to keep it flat on the chests and produce good quality ironing. Once properly adjusted, the pressure screw setting should seldom need to be changed.
Note: we have a (5) pin available with a rod welded to it, to allow checking this pin without reaching into the ironer.