Stop; Adjustment Of Detergent; Adjustment Of Air; Maintenance, Trouble Shooting And Service - Nilfisk FOOD Yeti TW Instrucciones De Uso

7.1.2.

Stop

1. Close the water supply (layout drawing).
2. Close the air supply (layout drawing).
3. Deactivate chemical supply by pulling up the
suction hose or removing the userpack (not pre-
diluted).
Due to the following it is very important
to close water, air and chemical supply
when the unit is 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 by means of a
limiting nozzle.
The limiting nozzle is placed in the suction nipple of the
non-retur valve (110003529) and can be replaced with
a smaller or larger nozzle depending on the concentra-
tion needed, please also see table for guidelines.
All tests have been made with Topax 12
Nozzle size in mm/ Concentration by 20 Bar in %
inch
0,4/0,016
0,5/0,019
0,6/0,023
0,7/0,027
0,8/0,031
0,9/0,035
1,0/0,039
1,1/0,043
1,5/0,059
7.1.4.

Adjustment of air

Remove the cover from the unit.
Adjust the air pressure on the reduction valve accord-
ing to technical data.

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
0,75
generally acknowledged technical regulations
such as DIN-norms and VDE-provisions. For your
1,15
safety, this cleaning unit has been manufactured
1,65
according to all relevant regulations valid in the
2,20
EU and therefore it has been supplied with the
2,90
CE-marking. For further information, please refer
3,60
to the service department.
4,40 4. When the cleaning process has been completed
or chemicals have been changed, it is important
5,3
to rinse the suction and injector systems in the
9,4
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.
• Open the spray gun/outlet valve and keep it open
until the injector has been rinsed through (approx.
30 seconds).
• Remove the suction hose from the water can.
When setting the regulator, carefully
pull up the knob and turn it clockwise
for pressure increase and counter clock
wise for pressure decrease.
17