VHF R5 - Cleaning Cooling Liquid System and Air Regulator

8.15 Cleaning the cooling liquid sys-
tem
If the flow rate of the cooling liquid isn’t sufficient or
the corresponding interval in the maintenance table
has been exceeded, you must clean the cooling liquid
system.
The task consist of the following automated processes:
Process Duration (approx.)
Cleaning 30minutes
Rinsing 5minutes
Drying (optional) 15minutes
NOTICE
Material damage when
cleaning the cooling liquid
system incorrectly
If you clean the cooling liquid system incorrectly, the
machine, blanks and tools will be damaged.
Only use Tec Powder from vhf to clean the cooling
liquid system.
Carefully follow the instructions below.
Tec Powder is available from customer service.
1. Start DENTALCNC.
2. Open the Maintenance section window with the fol-
lowing icon in the main iconbar:
3. Select the Cleaning the cooling liquid system main-
tenance task.
4. Confirm the current message.
The on-screen guide displays.
5. Confirm the opening of the working chamber door
and multi-purpose compartment.
6. Remove the following items from the working
chamber:
n
Any blank and holder
n
The tool magazine
7. Perform a weekly cleaning of the working chamber.
 Cleaning the working chamber – on page53
8. Empty and clean the cooling liquid tank.
9. Fill 2l (2.1qt) of drinking water without cooling lub-
ricant into the tank.
10. Add 50g Tec Powder to the water. Stir the water
until the powder is completely dissolved.
11. Insert the tank into the machine.
12. Go to the next step of the on-screen guide.
The cleaning process starts. The remaining time dis-
plays in the info area of DENTALCNC‘s main applic-
ation window.
13. Wait until the process is finished.
14. Empty the cooling liquid tank. Refill it with drinking
water without cooling lubricant.
15. Insert the tank into the machine.
16. Go to the next step of the on-screen guide.
The rinsing process starts. The remaining time dis-
plays in the info area of DENTALCNC‘s main applic-
ation window.
17. Wait until the process is finished.
DENTALCNC asks you if the machine should dry the
working chamber.
18. Select the desired option.
If selected, the drying process starts. The remaining
time displays in the info area of DENTALCNC‘s main
application window.
19. Wait until the process is finished.
20. If you didn’t select the drying process, dry the work-
ing chamber with a cloth.
21. Empty the cooling liquid tank.
22. Exchange the carbon filter.  Exchanging the carbon
filter – on page61
23. Thoroughly clean the cooling liquid tank.
24. Fill in cooling liquid for processing.  Exchanging
the cooling liquid and cleaning the tank – on page33
25. Insert the tool magazine into the working chamber.
8.16 Checking the compressed air
regulator
NOTICE
Damaging of the machine
when compressed air is
contaminated
Compressed air that does not fulfill the guidelines for
purity according to ISO 8573-1 can damage the
machine.
Check the water separator of the compressed air reg-
ulator daily for contamination.
Never use the machine if there is water, oil or solid
particles in the water separator.
8.16.1 Checking the w ater separator for con-
densate
Condensate in the separator usually points to
compressed air not being dry enough.
Original Operating Instructions:R5
Version: 12/16/2021
R5 – Maintenance and do-it-yourself
EN 66