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ON
OFF
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②
③
④
⑤
Ｗ
Ａ
⑥
⑦
⑧
⑨
4. DESCRIPTION OF OPERATION AND FUNCTIONS OF COMPONENTS
3. Cuspidor unit section
3-1. Operation and functions of control panel section
Increase
Decrease
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6
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Dental light select switch (optional)
Switch for changing the AL-520 / AL-820S / 900 Dental light (Type 920) lighting mode. Either sensor
mode or manual mode can be selected.
Service outlet (air) (optional)
Use this outlet to supply air to external equipment.
Service outlet (water)
Use this outlet to supply water to external equipment.
Service outlet water flow control
Use this knob to control the water flow rate supplied to outside. The flow rate decreases when the knob is
turned clockwise, and the flow rate increases when the knob is turned counterclockwise.
Water heater switch
Switch for turning on/off the cupfiller water heater.
The cupfiller water is heated to warm water when this switch is turned on.
NOTICE:
Water drips from the cupfiller nozzle when the water in the water heater
is heated. This phenomenon is not a sign of failure.
To prevent damage to the water heater caused by heating without water, ensure that the cup is
filled with water before turning on the water heater switch. The heating element will burn out if
the water heater is switched on without water.
CAUTION
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3
4
2
Cupfiller control knob
Use this knob for controlling the cupfiller water flow rate. The flow rate decreases when the knob is
turned clockwise, and the flow rate increases when the knob is turned counterclockwise.
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