To further improve the preventive service kits, the A, B, and B1 service kits have been revised, and the service procedure has been updated with new instructions.
Several changes have been made to our service kits in order to:
- Suit both XO 4 and XO FLEX units
- Maintain high uptime on existing units
- Introduce the latest upgrades to the installed base
Since the launch of the XO4 unit in 2004, XO CARE has included parts for mechanically updating units in the A and B service kits, along with the parts needed for general maintenance.
Every second year the update parts are removed from the service kits, and new update parts are included in the service kits for the following 2 years, and so on.
Below, you can find a detailed description of the changes in Service Kit A and B:
We kindly encourage you to follow the new service procedures step by step to ensure their optimal implementation.
A-kit (AP-655)
Removed parts:
- KT-072 Kit, upgrade suction disinfection
- UH-044 Kit, water regulator service
- SG-233 Gasket, seat, main water valve
- UG-654 Quick coupling, Ø6 – R1/8” plastic
- UG-799 Nut R1/8” stainless steel
Added parts:

B-kit (AP-656):
Removed parts:
- KT-072 Kit, upgrade suction disinfection
- UH-044 Kit, water regulator service
- SG-233 Gasket, seat, main water valve
- UG-654 Quick coupling, Ø6 – R1/8” plastic
- UG-799 Nut R1/8” stainless steel
- AO-982 Water filter w/tubing
Added Parts:

B1 kit (AP-657):
Consisting of a B kit and a retro-fit kit of XO Water Softener.
New version numbers on the labels on the service kits:
A-Kit: 3.00
B-Kit: 3.00
B1-Kit: 3.00
The new service kits are available from 2021-07-01.
If you have comments regarding the new service kits, please contact XO Technical Service.
Any feedback is highly appreciated.

