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Operating Manual access/eco/peak/power/silent Page
18
3 M
AINTENANCE
3.5. Pressure regulation nucleator:
The pressure regulator for the water supply is pre-set from the factory.
In case the pressure regulation does not function, that means that nucleation water
comes with a too high pressure and the security valve of the compressor is
activated, the mobility of the valve must be checked.
For Power/Eco/Super Silent 7,0 bar
For Peak/Access/Super Access 4,5 bar
Proceed as follows:
• The pressure regulating valve for the nucleation water is mounted directly on the
valve block. After taking off the back cover of the machine you can reach the
valve block.
• Now you can reach the regulating screw of the pressure regulating valve.
Turning it clockwise increases the pressure, counter-clockwise the nucleation
pressure falls.
• Check the pressure change at the pressure gauge in the air duct. For adjusting
the valve, let the snowmaker run with row 1 and 2 (nucleation row and one
water row) with approx. 20 bar water pressure at the input of the snowmaker.
• Regulate the pressure of the nucleation water to 4,5 / 7.0 bar by turning the
regulating screw. Then fix the screw after the adjustment with the counternut.
If the pressure doesn’t change please proceed as follows:
• Mark the regulating screw for the regulation of the spring resistance of the
regulating valve, then unscrew the screw until the spring is completely free.
• Open the cap of the valve and take out the spring plate and the pressure spring.
• Take off the piston for regulation and adjustment by turning and pulling with a
flat wrench SW10. Check to make sure the piston holds well. Also check if both
o-rings are possibly damaged and clean possible contaminations.
• Grease the track of the o-rings with waterproof grease and assemble the pieces
again in reverse order.
• Regulate the pressure of the nucleation water at 4,5 / 7,0 bar as described
above.
The piston is sealed by 2 o-rings to avoid having the spring chamber filled with
water.
Disassemble the valve as described above, change both o-rings and remount the
valve again. Before assembling, check that the border of the boring along the
piston track contains no burr.
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