Graymills DDP 1' Pump OMI User Manual

795–08692GM 12–00Graymills POLYPROPYLENEAir Operated1” Double Diaphragm PumpsOperations andMaintenanceInstructionsWARNING/CAUTIONSRead all these SAFET

10Air Exhaust VentilationFIRE AND EXPLOSION HAZARDBe sure to read FIRE OR EXPLOSIONHAZARD and TOXIC FLUID HAZARDon page 3, before operating this pump.

11OperationPressure Relief ProcedurePRESSURIZED EQUIPMENT HAZARDThe equipment stays pressurized until pressure is manu-ally relieved. To reduce the ri

12OperationOperation of Remote Piloted Pumps1. Follow preceding steps 1 through 7 of Starting andAdjusting Pump.2. Open air regulator (C).WARNINGThe p

13MaintenanceLubricationThe air valve is designed to operate unlubricated, howeverif lubrication is desired, every 500 hours of operation (ormonthly)

14TroubleshootingWARNINGTo reduce the risk of serious injury whenever you areinstructed to relieve pressure, always follow the Pres-sure Relief Proced

15ServiceRepairing the Air ValveTools RequiredD Torque wrenchD Torx screwdriver or 8 mm (or 5/16”) socket wrenchD Needle-nose pliersD O-ring pickD Lit

1604159Figure 917{ 161110{121512Insert narrow end first.Grease.3Install with lips facing narrow end of piston (11).4Insert wide end first.12342041601

17Ball Check Valve RepairTools RequiredD Torque wrenchD 10 mm socket wrenchD O-ring pickDisassemblyNOTE: Fluid Section Repair Kit 784–90617 for Hytrel

18Diaphragm RepairTools RequiredD Torque wrenchD 10 mm socket wrenchD 19 mm socket wrenchD Adjustable wrenchD O-ring pickD Lithium-base greaseDisassem

194. Unscrew one outer plate (105) from the diaphragmshaft (24). Remove one diaphragm (401), and the innerplate (104). See Fig. 13.NOTE: TeflonR model

2Table of ContentsSafety Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 4. . . . . . . . . . . . . . . . . .

2004236 0263704161Figure 13134224104403*401*2424 104 401*403*10519 402*Cutaway View, with Diaphragms in Place Cutaway View, with Diaphragms Removed1Li

21Bearing and Air Gasket RemovalTools RequiredD Torque wrenchD 10 mm socket wrenchD Bearing pullerD O-ring pickD Press, or block and malletDisassembly

220263904158Figure 14132252322119151216HMInsert bearings tapered end first.Press-fit bearings flush with surface of center housing (1).Apply medium-st

23Dimensional DrawingsSIDE VIEWPUMP MOUNTING HOLE PATTERNFour 0.5 in.(12.5 mm) diameter holes5.0 in.(127 mm)5.5 in.(139.5 mm)FRONT VIEW3/4 npt(f)Air E

24Technical DataMaximum fluid working pressure 120 psi . . . . . . . . . . . . . . . . . . . . (0.8 MPa, 8 bar)Air pressure operating range 20 to 120

25Performance ChartsTest Conditions: Pump tested in water with inlet submerged.0204060801001200 5 10 15 20 25 30 35 40(0.7, 7)Fluid Pressure CurvesA

26WARRANTYGraymills Corporation warrants that the equipment manufactured anddelivered, when properly installed and maintained , shall be free fromdefe

3TOXIC FLUID HAZARDHazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,inhaled, or swallowed.D Kno

4InstallationGeneral InformationD The Typical Installation shown in Fig. 2 is only a guidefor selecting and installing system components. ContactGraym

5GroundingWARNINGFIRE AND EXPLOSION HAZARDThis pump must be grounded. Beforeoperating the pump, ground the systemas explained below. Also read the sec

6Air LineWARNINGA bleed-type master air valve (B) is required in yoursystem to relieve air trapped between this valve and thepump. Trapped air can cau

7MountingsCAUTIONThe pump exhaust air may contain contaminants.Ventilate to a remote area if the contaminants couldaffect your fluid supply. See Air E

8Flange ConnectionsThe fluid inlet and outlet ports are 1” raised face flanges.Connect 1” flanged plastic pipe to the pump as follows.You will need:D

9Changing the Orientation of the Fluid Inletand Outlet PortsThe pump is shipped with the fluid inlet (R) and outlet (S)ports facing the same direction