Honeywell DC5, DC2, DC6, DC3, DC4 Wet End Removal, Inspection, & Reinstallation, Wet end components

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7.2Wet End Removal, Inspection, & Reinstallation

IF THE DIAPHRAGM HAS FAILED, PROCESS FLUID MAY HAVE CONTAMINATED THE PUMP ECCENTRIC HOUSING (ALTHOUGH NORMALLY, ANY PROCESS FLUID BEHIND A FAILED DIAPHRAGM WOULD PASS THROUGH THE BOTTOM DRAIN HOLE). HANDLE WITH APPROPRIATE CARE.

Figure 8, wet end components

OMNI® diaphragms do not have a specific cycle life; however, the accumulation of foreign material or debris sufficient to deform the diaphragm can eventually cause failure. Failure can also occur as a result of system over pressure or chemical attack. Periodic diaphragm inspection and replacement are recommended. Each user should perform regular inspections to determine the replacement interval that is appropriate to their system conditions.

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Contents

Installation, Operation Maintenance Instruction Models DC2, 3, 4, 5,Pulsafeeder Factory Service Policy Safety ConsiderationsTable of Contents 14.1 Introduction Principles Of OperationGear Ratio Assembly Reagent Head AssemblyControl Assembly Storage InstallationEquipment Inspection LocationPiping System Suction Pressure Requirements Discharge Pressure Requirements Fastener Inspection Output Adjustment Equipment Startup Priming the Reagent Head Process flowCalibration Sample flow calibration curveMaintenance LubricationWet End Removal, Inspection, & Reinstallation Wet end componentsDiaphragm Removal & Reinstallation Check Valves General DescriptionCheck valves, DC3 and DC Check Valve Removal & Reinstallation, Cartridge type DC5 and 6 check valves, metal construction Motor Removal & Reinstallation Gearset RemovalGearset components Gearset Replacement Ordering KOPkits or Parts Replacement PartsKOPkit Program KOPkit numbers by model Pump Model Wetted Material Connection Type KOPkit numberModel Number Identification NPTWet End Materials Reference PvdfTroubleshooting Difficulty Probable Cause Remedy Pump does not startDifficulty Probable Cause Remedy Noisy gearing Piping Accessories Pressure Relief ValvesDimensional Drawing Letters reference dimensional table on nextDC5 PP/PVDF Parts Diagrams and Parts Lists Parts diagram, DC2Bill of Materials, DC2 Description QTY Part NumberName TAG Bill of Materials, DC3 4 7 0 0 4 1 S T L This page intentionally left Blank Parts Diagram, DC4, 5, Bill of Materials, DC4 DC4/5 Gearbox Bill of Materials, DC5 Tiebar Bill of Materials, DC6 DC4/5/6 Gearbox Page Standard Pump Operations