Laser 1 & 2: Clean Blower Reserve each laser one at a time to ensure they're not both down at the same time.  Remove the blower from the system and loosen any large debris on the slots on the blower cage with a flathead screwdriver, then brush clean with a bristle brush. Be careful not to bend the fins. Check the water level in the chiller using the sight class on the back. If not between the min/max level, drain/refill using deionized distilled water. If the sight glass is clouded or moldy, file a tool report. Clean and lubricate the rails with machine oil. For additional details, please see Exhaust System Maintenance .