Chapter
4
64
ML-7 Series/ML-9001A
Chapter
4
Maintenance
4.7.3 Draining Coolant
Always drain the water from the Head Unit and Chiller Unit as follows if the marker will not be used for
more than a week, or before shipping or storing the marker. If the chiller is turned off, the correct coolant
ion concentration will not be maintained, which may lead to corrosion of the internal parts of the
Oscillation Unit.
1
After normal marker shutdown, turn off the Control Unit Power keyswitch and the breaker at the
back (main power supply).
2
Remove the drain hose cap from the back of the Chiller Unit and loosen the hose clamp.
3
Using a bucket prepared in advance to catch the water, pull down the drain hose and drain it.
4
Return the drain hose to its original position. Secure it with the hose clamp and put the cap back
on.
Be sure to cut off the breaker (main power supply) on the back of the Control Unit before
draining the water.
Drain hose
Cap
Hose clamp
Drain hose
To the bucket
Summary of Contents for ML-7 Series
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Page 8: ...4 ML 7 Series ML 9001A Contents...
Page 82: ...Chapter 4 78 ML 7 Series ML 9001A Chapter 4 Maintenance...
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