Synrad 48 Series - Troubleshooting

maintenance/
troubleshooting
44
Synrad
Series 48Series 48
Series 48Series 48
Series 48 operator’s manual
Maintenance
Required cleaning materials
Table 4-1 lists the type and grade of materials required to properly clean optical surfaces.
Table 4-1 Required cleaning materials
Cleaning Material Requirements
Finger cots or rubber gloves Powder free
Air bulb Clean air bulb
Ethyl alcohol Spectroscopic or reagent grade
Acetone Spectroscopic or reagent grade
Lens tissue Optical quality
Cotton balls or cotton swabs High-quality surgical cotton/high-quality paper-bodied
Cleaning optics
1 Shut off and lock out all power to the laser. You must verify that the laser is in a zero-energy state
before continuing with the optical inspection!
2 Visually inspect all optical surfaces in the beam path, including the laser’s output coupler, for
contaminants.
3 Remove loose contaminants from the optic by holding a clean air bulb at an angle to the optic and
blow a stream of air at a glancing angle across the lens surface. Repeat as necessary.
4 Dampen a cotton ball or fluffed cotton swab with the selected cleaning agent. Ethyl alcohol (least
aggressive) is best for initial surface cleaning. Acetone (moderately aggressive) is best for oily
residue or minor baked-on vapors and debris.
Note: If acetone is used as a cleaning solvent, a second follow-up cleaning of the optical surface using
ethyl alcohol is required.
5 Gently wipe the optical surface with the damp cotton beginning in the center of the optic and
working outward in a spiral pattern. Do not rub hard or apply any pressure, especially when using
a cotton swab. Drag the cotton ball or swab without applying any downward pressure.
Note: Use a clean cotton ball or fluffed swab on each pass. The cotton will pick up and carry surface
contaminants that may scratch optical surfaces if reused.
6 Carefully examine the optic under a good light. Certain contaminants or damage such as pitting
cannot be removed. In these cases the optic must be replaced to prevent catastrophic failure.
7 Repeat Steps 4 through 6 as required, removing all traces of contaminants and deposits.