DESMI PUMPING TECHNOLOGY A/S P a g e | - 84 -Tagholm 19400 Nørresundby - DenmarkPhone.: +45 96 32 81 11Fax : +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.com25.6 TemperaturePump type TemperatureGP Max. 150°CHD/PD/CD* Max. 250°CED Max. 130°C ( Magnetic material: Neodym-Iron-Bor )Max. 250°C ( Magnetic material: Samarium-Cobalt )CC Max. 80°CFigure 55:The pump liquid’s minimum/maximum temperature limits for the various pump types.For pumps with bypass valve the temperature is limited to 150°C on account of the valve spring.The valve mayhowever be supplied with another spring so that the temperature span of the pump can be utilised fully.As or additional temperature limits, see the section: ”Hot liquids”.* Pump types HD, CD and PD – designed with special tolerances – may in certain cases be use dup to 300°C.ED pumpElastomertypeElastomer brand TemperatureFPM Viton® Ca. –20°C / +200°CFEP Teflon® med Viton core Ca. –60°C / +205°CEPDM Ethylene-propylene Ca. –65°C / +120°CFFKM Kalrez® Ca. –50°C / +316°CFigure 56:The pump liquid’s minimum/maximum temperature limits for the various elastomers used in anED pump.26. Installation of ATEX pumps with PT100 sensorTo ensure that a ROTAN ATEX pump is safe to use in an ATEX-defined area the followinginstructions must be followed.ED pumps and pumps with soft shaft seal, must always be installed with a PT100 sensoraccording to DESMI PUMPING TECHNOLOGY A/S instructions.If the ROTAN ATEX pump is fitted with a bypass valve, a PT100 sensor has to be mounted onthe bypass valve.If a ROTAN ATEX pump is ordered with PT100 sensor, the PT100 sensor is not mounted fromthe factory, due to the risk of damaging it during transport.Before the first startup of the pump the PT100 sensor must be mounted in accordance withDESMI PUMPING TECHNOLOGY A/S instructions.
