GFL 2004 - Operation and Functional Description; 5.2 Initiation

5
5.2 Initiation
After assembly of all power and water connections open the stop valves of the water supply
(7, 8) and switch on the main switch to start operation.
During non-operation of the water still, the stop valves of the water supply should always be
closed.
6. Functional description
6.1 Water stills
GFL Water Stills 2002, 2004, 2008 and 2012 are operated fully automatic.
After switching the unit on via the main switch, the green pilot lamp in the main switch and
the yellow operation pilot lamp will glow.
The built-in solenoid valve is opened. Water flows through the cooling coil in the storage tank
and a mechanical water level regulator that controls the water level in the boiler. Water that
is not used for evaporation, flows off through the cooling water outlet.
The heating elements are switched on and bring the water in the boiler to the boil. A
thermostatic low water cut-off protects the heating elements against running dry. The
produced steam is led through a steam tube to the cooling coil, condenses, and the resulting
distillate drips into the storage tank.
The water level in the storage tank (right-hand chamber) is controlled by a wire electrode.
When the tank is full, an electronic regulator switches the water still off. The solenoid valve
cuts off the inflow of cooling water, the heating elements are switched off and the yellow
operation pilot lamp is extinguished.
Distillate can be withdrawn through the black plastic tap on the front of the unit.
After withdrawal of distillate, the unit is switched back on automatically, and the storage tank
will be refilled.
Carbon dioxide is degassed through a vent on top of the unit.
6.2 Water stills with separate water supply
(Accessory that should be built into the unit in GFL's plant in Burgwedel)
The separate water supply serves to feed pretreated water to the boiler and at the same time
feeding phosphatised or normal tap water to the cooling coil.
Before initial starting, the right-hand chamber must be hand-filled with pretreated water, as
described in 5.1. To operate the unit, open both valves of the water supply (7 + 8).
The feed rate will be limited to 0.5 litres per minute by a quantity reducer. Unused water
flows off through the outlet separate water supply (3).
The inflow of pretreated water is not automatically cut-off if the storage tank is full
and/or if the unit is switched off. It must be cut off with the stop valve (7).