Air Filter Cleaning; Water Draining Occasions; Replacing The Ion Exchange Resin Cartridge And The Deionized Or Steam-Distilled Water - Unitek Miyachi LW250 Operation, Maintenance And Service Manual

Air Filter Cleaning (continued)
1. Remove the filter holder panel by removing the screws with a Phillips screwdriver.
2. Remove the filter and rinse it with tap water. If it is extremely dirty, wash it with a mild
detergent.
3. Air dry the filter thoroughly. Replace it and secure it with the filter holder panel and
screws.
Water Draining Occasions. Both the D.I. water and cooling (city) water should be
drained on certain occasions, as specified in Table 7-1.
Replacement of ion exchange resin
cartridge and water filter
Moving or transportation
Storage or long periods of non-use
When ambient temperature drops
below 0°C (32°F)
Replacing the Ion Exchange Resin Cartridge and the Deionized or Steam-
Distilled Water. The ion exchange resin cartridge and the deionized or steam-distilled water
should be replaced approximately every 6 months. The tools and materials you will need are:

Plastic (vinyl) gloves

Ball-head Allen wrench screw driver, 3 mm

Special tool for removal/replacement of the ion exchange resin cartridge
Draining the Deionized or Steam-Distilled Water. To drain the deionized or
steam-distilled water, proceed as follows:
Note: The heat exchange coolant water is to be partly/completely drained under
the following conditions:

When moving or transporting the laser.
990-605 REV B: May, 1997
Table 7-1. Water Draining Occasions
Occasion
LW250 PULSED Nd: YAG LASER
CHAPTER 7: USER MAINTENANCE
Water to Change
Deionized
X
X
X
X
Cooling (City)
X
7-2