Deliming; Coupling - Nilfisk Food Yeti Mode D'emploi

This procedure should be
followed both on the detergent
and the disinfectant side (if this is
installed).

9.3. Deliming

• The interval of the Deliming procedure is depens
the water hardness.
• Make sure the water to the unit is disconnected.
• Remove the Cover from the unit.
• Dismount the injector block. Dismount the air
valve and the non-return valve for air, inclusive of
the air fittings.
• Put the injector block in a deliming bath.
• Wait for 60 minutes.
• Rinse the block in clean water.
• Mount the air valve and the non-return valve on
the injector block and mount the injector block in
the unit.
• Connect water to the unit.
• Test the unit make sure the vacuum is sufficient, it
is recommended to be between 14,8 - 20,7 in Hg /
-0.05 - 0.07 MPa.
• Test that the unit can start and stop in both foam
and rinse position
• Reinstall the cover on the unit
The following deliming interwals must be observed to
prevent lime building up in the unit, that can discon-
tinue operation of the unit
°dH ppm Time between Deliming
0-5 18-90 12 months
5-10 90-180 6 to 12 months
10-15 180-270 3 to 6 months
15-20 270-360 3 to 6 months
>20 >360 1 to 3 months

9.4. Coupling

It is recommended to lubricate all coupling parts
regularly (approx. once a month) with waterproof
grease to prevent leaks and damage of packings. If
the unit is equipped with a spray gun the piston of the
gun should also be lubricated.
In leaking quick couplings the packings should be
replaced.
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