GCC Technologies T500 User Manual page 34

II. WATER FILTER CONSUMABLE MAINTENANCE
The water filter is suggested to change when it turns yellow or brown. Change water when replacing
filter together. Use the plastic wrench from water chiller accessory to remove the bottom cap of the filter
module when replacement is needed.
III. ADD WATER AND ADDITIVES TO WATER CHILLER
Step 1. Add distilled water to the water chiller following the chiller user manual indication
Step 2. Add corrosion inhibitor to the water chiller, the proportion of corrosion inhibitor and water is
1:25. MOTOREX COOLANT-F is our standard choice as corrosion inhibitor as it can protect
most types of metal, including copper, iron, aluminum, and zinc. Furthermore, it is
dissolvable in water.
Step 3. If the water chiller is installed in a cold climatic location, -10℃/ 14°F (skip this step if the
ambient temperature is always above 0℃/ 32°F), then 5 liters (approx. 1.32 Gallon) of
Isopropanol (or Isopropyl Alcohol--- (CH3)2CHOH ) should be added as an anti-freeze.
Step 4. Fill the tank with distilled water.
CAUTION!
1. DISTILLED WATER ONLY (DO NOT USE TAP WATER!!!)
Use distilled water (pH7) with the cooling system. Tap (regular) water contains particles that
can be oxidized and forms deposits that may block the water passage either in the cooling
system or the laser cavity and thus, affecting the cooling system's heat dissipating ability.
2. DO NOT USE ANTIFREEZE FOR AUTOMOBILE
Isopropanol should be added to the water chiller in the ratio of 1:3 if the ambient temperature
may get to below 0°C in order to prevent the water from turning to ice. Ice will expand and
eventually rupture and damage the laser source and the water chiller.
3. DO NOT CONTINUE TO USE THE CHILLER IF CONDENSATION OCCURS
If the condensation occurs on the laser source, it can be due to a big difference in the interior
temperature and the ambient temperature, then we should adjust the set temperature of the water
chiller to a higher temperature (increment the temperature by 1℃ until there are no more
34 232002080G(09)