Chapter
4
63
ML-7 Series/ML-9001A
4.7 Chiller Unit Maintenance and Inspection (ML-7064A Only)
4.7.2 Using the Heater
When the marker is used in a low ambient temperature (5
°
C to 15
°
C) and with a low LD current (8 A to
15 A), the coolant temperature may drop below 24.5
°
C. If the current coolant value is usually below
24.5
°
C, turn on the Chiller Unit heater as follows:
1
Open the maintenance window at the front of the Chiller Unit.
2
Turn on the heater switch at left. (This switch is off at the time of delivery.)
3
Close the maintenance window.
If the ambient temperature is above 20
°
C, be sure to keep the heater off.
Current coolant value
Fluid temperature setting
Maintenance window
Heater switch
OFF
ON
Summary of Contents for ML-7 Series
Page 4: ......
Page 8: ...4 ML 7 Series ML 9001A Contents...
Page 82: ...Chapter 4 78 ML 7 Series ML 9001A Chapter 4 Maintenance...
Page 83: ...Appendix...