User manual HONEYWELL NK300SOFT

[. . . ] Inlet pressure fluctuation does not influence the outlet pressure, thus providing inlet pressure balancing. The refilling combination can be connected in accordance to DIN EN 1717 constantly by hose line or piping. In order to prevent an uncontrolled refill of the heating system, the shut off valvemust be closed after the filling procedure. Function softening unit The softening unit, installed directly after the refilling combination, works according to the ionic exchange principle and replaces the alkaloids of soil such as calcium and magnesium with sodium ions. [. . . ] Loosen the slotted screw of the refilling combination o Do not remove slotted screw 4. Turn adjuster knob until the pressure gauge shows the desired value 7. Measuring the water hardness with support from the total hardness test-kit, included in the scope of delivery, the water hardness should be measured before the installation. Set the dilution unit with the blue adjustment handle o The suitable dilution setting (marker 0-3 on the casing of the dilution unit, remove insulation lining if necessary) is dependant on the regional water hardness and the desired residual hardness. Slowly open the ball valve on the inlet and outlet side of the refilling combination and on the outlet side of the blending unit 2. After filling up the system, close the ball valves Because of casual fluctuation of pressure dripping water at discharge valve can occur!Maintenance Maintenance of backflow preventer must be carried out by authorized personnel!Frequency: every 6 month (depending on local operating conditions) · To be carried out by an installation company · Inspection with a test control unit and maintenance-set (see accessories) 9. Check outlet pressure on pressure gauge when no flow is occurring o If the pressure is increasing slowly, the valve may be dirty or defective. Procedure according to instruction of the test control unit TKA295 resp. tK295 Quick test for the discharge valve: · Lower the inlet pressure o if the discharge valve opens (it drops), the function is o. Procedure according to instruction of the test control unit TKA295 resp. 2 Maintenance We recommend a planned maintenance contract with an installation company In accordance with DIN EN 1717 a regular maintenance must be taken. Frequency: every 1-3 years (depending on local operating conditions) To be carried out by an installation company 9. Close ball valve on the inlet side of the refilling combination and on the outlet side of the blending unit 2. decompress the outlet side by opening the sampling valve (air bleed valve of the blending unit) 3. Loosen the slotted screw of the refilling combination o Do not remove slotted screw 4. Check that sealing ring, edge of nozzle and slotted ring are in good condition, and if necessary replace the entire valve insert 9. [. . . ] Discharge valve, cartridge insert, valve insert, mechanical components of the blending unit and spring bonnet made of high-quality plastic · Cartridge made of polypropylene (dispose of with residual waste) No or too small water flow rate Refilling combination is not fitted in flow direction Ball valves up- or downstream of refilling Open ball valves entirely combination are not fully open Pressure reducing valve is not set to the desired outlet pressure integrated strainer is contaminated Discharge valve opens without Non return valve upstream or discharge reason (no fluctuation of inlet valve are contaminated pressure) Set outlet pressure clean strainer Remove cartridge insert and clean or exchange it Discharge valve does not close Discharge valve is contaminated or faulty Remove cartridge insert and clean or exchange it Water is escaping from spring Valve insert diaphragm damaged hood Exchange valve insert The outlet pressure set does not Valve insert, sealing ring or edge of nozzle Exchange valve insert remain constant is contaminated or worn Description 1 Cartridge insert complete 2 Check valve 3 Valve insert complete (not incl. Test kit Electronic pressure measuring device with digital indicator, battery-operated. with case and accessories , ideal for inspection and maintenance of backflow preventer type BA. TKA295 Test kit Analogue pressure measuring device with differential pressure display. [. . . ]