GRANUDOS 45/100 PLUS V70 Touch
Index: 03
Change date: 25.04.2018
Operating instructions no.: BA SW 001-03 Granudos 45-100 PL V70T.docx
Page 42 of 92
43.
Operating water outlet ball valve
44.
Control valve for dissolving water
45.
Dirt filter d75mm
46.
Motive water pump (different versions)
47.
Floater (of the floater control valve)
The adjustment of the water flow is identical for the version with or without dust
extraction. The hole disk in the screw connection (36) downstream of the injector
(35) adapts the suction performance of the injector to the pressure conditions. A
drop of the water level in the rinsing tray (
33)
during the initial operation implies
that a diaphragm with a smaller hole must be inserted into the screw connection
(36).
A diaphragm with a larger hole is required or the diaphragm must be removed,
when the water level increases or the switch body of the flow switch (39) is not
clearly pushed upwards.
A 6mm diaphragm is installed ex factory; diaphragms with 5.5mm and 7mm are
included in the spare parts bag attached.
Setting the pressure switch (31)
The pressure switch installed (31) registers the effective pressure of the motive
water pump (46). The GRANUDOS system switches off when the switching power
is not reached after air was aspired or a pressure drop in the water supply. This
ensures, in addition to the electrical interlock, that:
Dosing is switched off when the motive water pump delivers too little water.
The motive water pump is not exposed to cavitation risk.
The GRANUDOS dosing system must operate in normal mode in order to set the
switching point. Remove the lid from the pressure switch for this purpose, turn the
adjustment button by 0.25 bar to the right and wait for 6 seconds.
In case the dosing system continues running, repeat the process until the dosing
device stops and the "Pressure min." alarm message is shown. The GRANUDOS
dosing system stops. Turn the setting button back by 0.25 bar and press the Start
button. Now the GRANUDOS dosing system starts up. The GRANUDOS dosing
system will show a fault when the pressure drops by 0.25 bar.
The switching point is set to 1.5barg ex factory.