Adjustment Of Detergent; Adjustment Of Air; Maintenance, Trouble Shooting And Service - Nilfisk ECOLAB Hybrid Compact SD21 Mode D'emploi

Due to the following it is very important
to close water, air and chemical suplly
when the unit not in use.
• If the air supply is open when the unit
is not in use - air might seep into the
water pipe - which means that the
system has to be bled again.
7.1.3.

Adjustment of detergent

Remove cover from the unit.
Adjustment of detergent can be done either by means
of a limiting nozzle or by means of a dosing valve
(layout drawing).
The limiting nozzle is placed in the suction nipple of
the non-retur valve (110003808) and can be re-
placed with a smaller or larger nozzle depending on
the concentration needed, please also see table for
guidelines.
All tests have been made with Topax 12
Nozzle size in mm Concentration by 20 Bar in %
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,5
7.1.4.

Adjustment of air

Remove the cover from the unit.
Adjust the air pressure on the reduction valve until an
appropriate foam quality is reached.
16

7.2. Maintenance, trouble shooting and Service

Maintenance Instructions
1. Quick couplings; it is recommended to lubricate
all couplings parts regularly, approx. once a
month) by water proof grease to prevent leaks
and damage of o-rings.
2. If the quick couplings leak, o-rings should be
replaced.
3. Depending on usage, maintenance should be
undertaken by an authorised service engineer at
least once a year in order to prevent defects and
failure of operation. Authorised engineers are
persons who due to their skills and experience
have sufficient knowledge of Hygiene Systems
and are confident with the state work safety regu-
lations, accident preventing regulations, lines and
generally acknowledged technical regulations
such as DIN-norms and VDE-provisions. For
your safety, this cleaning unit has been manufac-
tured according to all relevant regulations valid
in the EU and therefore it has been supplied with
the CE-marking. For further information, please
refer to the service department.
4. When the cleaning process has been completed
or chemicals have been changed, it is important
to rinse the suction and injector systems in the
following way:
5. Replace the can with a can containing clean
water.
6. Put the suction hose into the water can.
• Connect the foam nozzle.
110003808 • Open the spray gun/outlet valve and keep it open
until the injector has been rinsed through (approx.
30 seconds).
0,75
• Remove the suction hose from the water can.
1,15
7. It is recommended to descale the unit according
1,65
to pharagraph 9.3
2,20 8. It is recommended to clean the surface inside the
unit at least once a month in order to maintain
2,90
parts and avoid corrosion of parts.
3,60
4,40
5,3
9,4
When setting the regulator, carefully
pull up the knob and turn it clockwise
for pressure increase and counter clock
wise for pressure decrease.