GRANUDOS 45/100-S5

For single pools

Dosing station for calcium hypochlorite granulate and acid for the disinfection and the pH-regulation of swimming pool water.

Chlorine dosing directly from the delivery drum. Acid is dosed into the system directly from the canister to correct the pH and to avoid scaling. Chlorine and acid are dosed separately at intervals to the dissolving system and dissolved completely. Then the chlorine solution is conveyed by a venturi nozzle to the pool water. Dosing manually or linked to an external control system. All functions are permanently monitored. 

GRANUDOS 45/100-S5

Technical Data

Electrical supply 230 V/AC, 50 Hz 
Power supply 0,39 kW 
Water supply DN20 
Water outlet to injection point DN20 
Measures W 60 cm x D 80 cm x H 140 cm 
Weight app. 50 kg 
Dosing performance chlorine GR45: 0,1 - 2 kg/h // GR100: 0,2 - 4 kg/h 
Dosing performance acid 3 l/h 
Pre-pressure min. 0,2 bar  
Back-pressure max. 1,2 bar (otional 1,8 bar) 

Scope of delivery

Vertical support: Rotating drum carrier, steel, zinc and blue powder coated, drum fixing device with clamp bands and safety belt. 

Chlorine dosing: Dosing hopper to be screwed on the chemical drum. Dosing motor, dosing screw, knocker to support the dosing. Capacitive switch for empty monitoring of the drum. 

Acid dosing: Peristaltic dosing pump, suction lance with empty report of the canister, dosing valve 3/8“ in the dissolving system. 

Dissolving system: Pre-filter d 75, flushing tank, booster pump app. 1000 l/h at 1,2 bar, venturi, mixing cyclone. Monitoring of the pump by pressure switch. Monitoring of the suction performance of the venturi. Level monitoring in the flushing tank. 

Control techniques S5: Operation and visualisation via 5-line LC display and three buttons. Fault indications are displayed in plain text. Adjustment of dosing performances chlorine and acid stepless. External dosing control with autocontrollers for free chlorine and pHvaluewith non-volt contact or 230 V/AC impulse length or frequency controlled. Relay system to assure dosing of only chlorine or acid or none. Switch-off of the dosing at malfunction.


The GRANUDOS is generally available for nearly all chemical buckets and drums in trade. Please mention the demanded drum if you will place an order for GRANUDOS 45 or GRANUDOS 100.

To be provided by the builder

  • Power supply
  • Supply tubing and tubing to the injection point
  • Tubing of the overflow to the drain 
  • Autocontrol system to control the dosing of the chemicals

Accessories/ Options

  • Drum lifter for chlorine drums
  • Container GR 150 for very high chlorine demand
  • Optional for the dosing of Dichlor
  • Autocontrol System
  • Dust extraction for the dusty chlorine granulate material
  • Dosing nozzle closure