Chiller Unit Maintenance - Mazak STX SC L PLUS CONTROL Training Manual

Chiller Unit Maintenance

4-1 Chiller Flushing Procedure
1 >
2 >
3 >
4 >
5 >
6 >
7 > Repeat steps 4 - 6 at least 3 times to purge the system of all the flushing agent.
8 >
4-2 Heat Exchanger cleaning
1 >
2 >
4-3 Replacing the Mist Filter Element
1 >
2 >
3 >
4 >
5 >
Drain the contents of the chiller by attaching a hose to the drain port and opening
the valve.
Fill the chiller reservoir with tap water and the appropriate amount of flushing agent.
Recommended Flush Agent:
Run the chiller for 8 - 12 hours. The machine can be in operation while flushing.
Drain the contents of the chiller.
Fill the chiller reservoir with tap water only.
Run the chiller for at least one half hour.
Fill the chiller reservoir with distilled water and the appropriate amount of corrosion
inhibitor and bactericide/fungicide.
Recommended corrosion inhibitor: "ISOGUARD" ( 1/2 gal. per 50 gal. of water )
Recommended Bactericide/Fungicide: "GAX - 26" ( 5 oz. per 50 gal. of water )
The heat exchangers must be cleaned regularly. The interval for cleaning the heat
exchangers is typically every 2-3 days depending on the environment.
The exchangers can be either vacuumed or blown out with compressed air so that
there is no dirt collected on the cooling fins.
NOTE: DO NOT place filters over the heat exchanger air intake. Filters block the
volume of air flow causing the chiller to work harder and can potentially damage
the compressor.
Remove the front cover on the chiller unit.
Locate the filter housing. Remove the bottom portion of the filter unit.
Turn the filter element until it is removed.
Attach the new element.
Replace the filter housing.
"CITRANOX" ( 1 gal. per 50 gal. of water )
12