DESMI PUMPING TECHNOLOGY A/S P a g e | - 11 -Tagholm 19400 Nørresundby - DenmarkPhone.: +45 96 32 81 11Fax : +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.com3. Safety warnings – in general The pressure in the heating jacket on the front cover and the cooling jacket on the rearcover may not exceed 10 bar. Lift the pump mechanically, if the pump’s weight is more than the permitted number ofkilos that people may lift. Do not place fingers in the pump’s ports when lifting or handling the pump. Motors fitted with lifting eyes must not be used to lift the whole pump, but only to liftingthe motor separately. Lift of the pump should be performed in stable suspension points so that the pump isbalanced and the lifting straps are not placed over sharp edges Lift of the pump shall be performed in conformity with the lifting instructions in Figure 10– Figure 16 Carefully shield the coupling between the pump and motor Bolt the pump securely to the foundation. Clean out any impurities from the pipe system before the pump is connected to it Remove the protective plugs from the pump ports before connecting the pipes. Flange couplings must always be undertaken by skilled professionals. Achieve parallelism between the flanges and observe the maximum tightening torque toprevent tension in the pump casing Threaded couplings must always be made by skilled professionals Connecting a pump with an internal thread to a pipe with a conical thread can cause thepump casing to burst if the coupling is over-tightened. Fit the pump unit with an emergency stop Connect and adjust any monitoring and safety systems – controls, manometers,flowmeters, etc. – according to the operating condition for safe operation Clean the pump for test oil before operation Use suitable safety equipment when aerating the pump such as gloves, protectivegoggles etc. – depending on the pump liquid Never bleed the pump in operation on account of the danger of squirting cold, hot,etching or poisonous liquids under pressure The pipe system must be secured against excess pressure in other ways than using theROTAN bypass valve In the event of liquid properties which may block the bypass valve in its function, othercomparable devices should be used instead of the ROTAN bypass valve. Pumps without a ROTAN bypass valve must use another equivalent safety device whichprotects pump and motor
