8
WL850 HV Technical Manual - Version 1, November 2007
9
WATER PIPE AND FITTINGS
All water connection fittings are made by the John Guest Company and are approved
to NSF standard 51. The machine is connected the water supply by a ¼” female
bulkhead fitting.
The entire internal water circuit and all the components which come in contact with
water are food grade NSF / WRAS approved.
PLASTIC PANELS
The moulded panels are made from ABS plastic. All the ABS plastic panels are UV
resistant and incorporate the heat retardant standards of CE and UL... Please note
that the machine should not be exposed to direct sunlight. Placing machines in
direct sunlight from a window, or close to a radiator, or on in a room of high ambient
temperature will effect the efficiency of the refrigeration circuit.
WATER PUMP
The pump is 24V DC and forces the pre-chilled cold still water in to carbonation tank
at high pressure. This pressure is required to overcome the internal carbonation
tank pressure of 45 PSI of CO
2
gas. By forcing cold water at pressure into a tank of
CO
2
gas the machine produces carbonated water. A level probe in the carbonation
tank controls the water pump connected to the machine PCB.
THE GAS REGULATOR
The correct flow and pressure of gas that is fed to the carbonation tank is controlled
by a CO
2
gas regulator and is factory set at 45PSI. The gas pressure can be increased
and this may see an increase in the level of carbonation, but this is also relevant
to water temperature and pressure. Over adjustment of gas pressure (50PSI) will
see no increase of carbonation levels and in fact will stop the machine functioning
correctly. Food grade CO
2
gas must be used at all times.
FILTERS
The filtration system on the WL850HV is NSF approved two –stage filter. Stage
one is a 10 micron screen; Stage two is a Granular Activated Carbon (GAC) process
which will remove a whole range of contaminates e.g. chlorine, pesticides, sediment,
and any taste or odour that may be in the water. Carbon filter also remove a whole
range of other contaminants found in water. It is important for the UV sterilization
system to be supplied with clean water in order to achieve maximum efficiency. If the
water is not cleaned of particulate matter, this will restrict the penetration of the UV
radiation into water. There are many kinds of different filter combinations available
from Waterlogic to suit local water conditions, and for the exclusion of Crypto, Cysts
and heavy metals. All filters must be changed at 6-month service interval.
HOT TANK
The hot water tank has a two litre capacity; it is manufactured from 304 stainless
steel and is heated by a 800 watt heating element. Temperature of the Hot Tank
is controlled by a mechanical thermostat and is factory set at 87ºC, this being the
ideal temperature for instant drinks. A thermal cut out is fitted to the Hot Tank to
prevent overheating. The tank can be fitted with an optional scale-inhibiting filter
to increase the tank life. Setting the hot water temperature at 87 ºC also helps stop
scale forming in the Hot Tank.
COMPRESSOR
The compressor operates at 220-240V and at 50Hz. It uses R134a non-Ozone
depleting refrigerant gas. There is also the option to use Natural refrigeration gas
WATER VALVES
Dispensing of water to the customer is achieved by means of a 24V DC electrical
solenoid valve. The valves are energized every time a customer pushes the dispense
button for a drink. DC voltage is used to give a positive and quieter action of the
solenoid valve. The WL850HV model is fitted with both inlet and outlet valves.
Содержание WL850HV
Страница 1: ...WL 850 HV Technical Manual...
