Dental Delivery Unit Operation Manual
REV-A
Page 36 of 45
Chapter 7 Maintenance
7.1 Daily Maintenance
Daily
Clean the instrument tray
User
Clean the surface of dental chair
User
Clean the suction syringe tubes and filter
User
Weekly
Clean the tubes with >500ml clean water
User
Check the ponding in filter reducing valve
User
Monthly
Clean the seat cushion
User
Clean the filter
User
Clear the ponding in filter reducing valve
Draw off water of air compressor for 1-4 times
User
Yearly
Lubricating the joint with oil
Qualified service personnel
Check the movement and operation
Qualified service personnel
As Required
Change the filter
User
Clean the pipes
User
Sterilize the hand pieces and 3-way syringe
User
7.2 Clean Filter
There are filter nets in water pipes, air pipes, and high/low suction pipes. Please clean them as
requested in case of being jammed.
7.3 Common Malfunction and Solution
N
o.
Malfunction
Reason for reference
Solution
1
When being used
frequently, the unit
stops moving
suddenly but control
system is normal.
The over temperature
protection of electrical
machine makes it stop
It can work normally again after
resting for half a day.