DESMI PUMPING TECHNOLOGY A/S P a g e | - 72 -Tagholm 19400 Nørresundby - DenmarkPhone.: +45 96 32 81 11Fax : +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.comNon-installed/installed pump:Type ED, CC (with set screws):1. Loosen set screws pos. NM2. Tighten adjusting screws pos. E until the front cover is positioned against the rotor/idler.3. Check that the pump shaft cannot be turned4. (If the pump shaft can turn, this is because the front cover and/or rotor/idler are worn, andthe play can thus not be set correctly. Worn items must then be replaced before resettingthe axial clearance)5. Loosen adjusting screw pos. E according to the number of degrees obtained in the formulain Figure 446. Tighten set screws pos. NM.7. In non-installed pumps, once adjusted the play must be checked with an air gap gauge in atleast 3 different points, to ensure that the front cover is parallel with the rotor.Finally, make sure that the pump shaft can turn easily and regularly and that no jarring soundcan be heard. Finally, make sure that the pump shaft can turn easily and regularly and that nojarring sound can be heard.Type GP:1. Loosen set screw pos. DC on sleeve coupling pos. DB2. Loosen the short set screws pos. KY3. Tighten the long set screws pos. KX until the rotor is positioned against the front cover4. Loosen the long set screws pos. KX according to the no. of degrees obtained in the formulain Figure 445. Tighten the short set screws pos. KY6. Tighten set screw pos. DC7. When adjustment is complete, make sure that the pump shaft turns easily and regularly, andthat no jarring noises can be heard.(The flange motor in GP pumps must have a locked bearing at the end of the shaft end, toensure that the pump’s axial clearance falls within permitted parameters)Figure 47:The procedure for setting the axial clearance in the various pumps for installed and non-installedpumps respectively.
