GRS and GRE grinder sewage pumps

Product Code : SEW-7

Pump application:          
This range of heavy duty cast iron submersible grinder pumps are suitable for both commercial  and industrial use.    These pumps can be used for pumping polluted water containing, fibrous bodies and raw sewage.      Fitted with an effective hardened corrosion resistant grinding device and anti clogging grinder system that reduces pump blockages, maintaining pump efficiencies.          Easy to install with the special coupling device.  Mechanical seal made of wear-proof silicon carbide complete with a sealing ring.  It includes heavy duty ball bearing motor with inbuilt overloads.          
Performance data:          
Performance curves are based on a kinematic viscosity value of 1mm2/s and a density of 1000 Kg/m3 at 20ºC.          
  - Flow rates up to 24m3/h.          
  - Heads up to 24m.          
  - Maximum fluid temperature: +40ºC.          
  - PH of fluid: 6 to 10.          
  - Rotational speed: 2900rpm.          
  - Maximum immersion depth: 20m          
The driving motor is an asynchronous, closed squirrel cage type, designed for continuous duty.          
  - With in-built thermo-amperometric protection.           
  - Class of insulation: F.          
  - Degree of protection: IP68.          
  - Maximum number of start-ups: 20 per hour.          
  - Cable length: 10m.          
The pump is to be installed in an upright position for both fixed and portable plants.  Do not run your pump dry.    To prevent damage, use a rope or chain to position and retrieve your pump - never use the electric cable for this purpose.  For a typical installation see page 4 of 4 of this document.          
Caution 1:           
Don't use this pump for recirculating or filtering pools, spas, etc.   While these pumps are built to a high safety standard, they are not approved for installations where people will be in the water while they are operating. 

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