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Dosapro Milton Roy G Series Instruction Manual

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INSTRUCTION MANUAL
FOR INSTALLATION,
OPERATING,
AND MAINTENANCE.
Pump
SERIES G™ MODEL B
This manual should be made available to the person responsible for installation,
operating and maintenance.
Date : 12/98
O / Ref : 160.0704.001. Rev. A
Replaces Rev. A, 04/97

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  • Page 1 INSTRUCTION MANUAL FOR INSTALLATION, OPERATING, AND MAINTENANCE. Pump SERIES G™ MODEL B This manual should be made available to the person responsible for installation, operating and maintenance. Date : 12/98 O / Ref : 160.0704.001. Rev. A Replaces Rev. A, 04/97...

  • Page 3: Table Of Contents

    CONTENTS HOW TO USE THIS MANUAL ? I - DESCRIPTION I - 1. Unpacking and storage I - 2. Description I - 3. Operating principle of the pump I - 4. Safety and health instructions II - INSTALLATION II - 1. Hydraulic installation II - 2.
  • Page 4 VI - SERVICING THE LIQUID END AND THE LIQUID END MOUNTING ASSEMBLY VI - 1. General VI - 2. Removing the liquid end and the liquid end mounting assembly VI - 3. Reinstalling the liquid end and the liquid end mounting assembly TECHNICAL CHARACTERISTICS «...
  • Page 5 HOW TO USE THIS MANUAL ? IMPORTANT: You should read the following paragraphs carefully in order to understand how to use this manual efficiently. This manual corresponds to the type of pumps mentioned on the cover page. There may be several different construction versions for each type of pump, however, and this manual takes those differences into account.

  • Page 6: I - 1. Unpacking And Storage

    PART I - DESCRIPTION I - 1. UNPACKING AND STORAGE UNPACKING The packaging must be carefully examined on receipt in order to ensure that the contents have not sustained any obvious damage. Precautions must be taken when opening the packaging in order to avoid damaging accessories which may be secured inside the packaging.
  • Page 7 Motor Leak detection port Mechanical assembly Valve assembly (suction) Liquid end Valve assembly (discharge) Stroke adjustment knob Filler plug Liquid end mounting assembly Drain plug Stroke locking device Fig. 1.2a: Model B, series G pump I - 2 G, B, L001, Rév. A, 1298...

  • Page 8: I - 3. Operating Principle Of The Pump

    I - 3. OPERATING PRINCIPLE OF THE PUMP See Figures 1.3b and 1.3c. Fig. 1.3b : Setting to zero stroke Suction phase Discharge phase Fig. 1.3c : Setting to maximum stroke Worm Diaphragm Tangential wheel Stroke = two times the distance between (A) and (B) Eccentric Position at rear neutral point Connecting rod...

  • Page 9: I - 4. Safety And Health Instructions

    The connecting rod [4], attached to this eccentric system, converts the rotary motion into a reciprocating linear motion with variable stroke. The stroke depends upon the eccentricity between the axis of rotation of the tangential wheel [A] and an axis of the connecting rod [B].

  • Page 10: Installation

    PART II - INSTALLATION II - 1. HYDRAULIC INSTALLATION All the information concerning the hydraulic installation of a metering pump is detailed in a volume, « Generalities about metering pumps installation ». You should consult that manual to determine the installation required for your application. Certain essential points are, however, also briefly covered in this document.
  • Page 11 Tank Injection nozzle Foot valve (equipped with a filter) Shutt-off valve Metering pump Filter Utilization Pulsation dampener Safety valve Fig. 2.1a : Diagrams of typical installations II - 2 G, B, L001, Rév. A...

  • Page 12: 2. Drip Collection

    II - 2. DRIP COLLECTION Provide for outlets so that any leak or drips can be easily drained off without any danger. This is especially important in the case of harmful liquids. See Figure 1.2a. Position a tray under the plain hole (detection port [9]) located at the bottom of the liquid end mounting assembly to collect leaks in the event of rupture of the diaphragm or boot.

  • Page 13: 5. Electrical Installation

    II - 5. ELECTRICAL INSTALLATION CONNECTING THE MOTOR Check the specifications of the motor and compare them with the voltage available on your installation before making connections. Connect up the motor in accordance with the instructions in the terminal box (Fig. 2.5a). A delta connection is required to connect up to a 230 V 3-phase power supply (Fig.

  • Page 14: Start Up

    PART III - START UP III - 1. PROCEDURES BEFORE START UP Special care has to be taken for chemicals used in the process (acids, bases, oxiding/reducing solutions, ...). See Figure 1.2a. • Check that the pump is secured to its support (Chapter II - 4. Setting up). •...

  • Page 15: 3. Failures On Start Up

    III - 3. FAILURES ON START UP PROBLEMS WITH MOTOR The motor runs with difficulty and heats up. • The characteristics of the electrical power supply do not match the specifications of the motor. • One phase is incorrectly connected. •...
  • Page 16 III - 4. OPERATION - SCHEDULE FOR CHECKS AND MAINTENANCE OPERATIONS The programme of checks and maintenance operations depends on the conditions in which the equipment is used. For this reason, the following frequencies are given as an example only. Individual users should adapt these frequencies to their own specific operating conditions.
  • Page 17 MAINTENANCE SHEET Pump code D.M.R. internal no. : Liquid pumped Service Operation Date Hours Remarks Fig. 3.4a : Model Maintenance Sheet III - 5 G, B, L001, Rév. 0...

  • Page 18: Routine Maintenance

    PART IV - ROUTINE MAINTENANCE IV - 1. OCCURRENCE OF A LEAK FROM DETECTION PORT Determine whether the product collected at the detection port [9] (Fig. 1.2a) is lubricating oil or the pumped fluid. • If the product is pumped fluid, the diaphragm is faulty. Proceed with its replacement (see Part V).

  • Page 19: 3. Checking The Pump Capacity

    Table of equivalencies: FUCHS RENEP 220 B.P. GR XP 220 CASTROL ALPHA SP 220 REDUCTELF SP 220 FINA GIRAN 220 IGOL DYNAM SP 220 MOBIL OIL MOBILGEAR 630 SHELL OMALA 220 TOTAL CARTER EP 220 ESSO SPARTAN EP 220 • Special conditions : for example, low-temperature oil. Consult us. IV - 3.

  • Page 20: 5. Ordering Spare Parts

    PROBLEMS WITH FLOW RATE The pump produces no flow • The pump capacity is adjusted to « 0 % » : Adjust the capacity to the desired value and lock the stroke adjustment knob. • The liquid end is unprimed: release the pressure on the discharge pipe and prime the liquid end, or check the leak-tightness of the suction circuit.
  • Page 21 Type : Pump code Dmax : maximum capacity Pmax : maximun pressure Date: date of manufacture N° : Contract No Item : your reference N° série.: Dmr internal no Fig. 4.5a : Identification plate IV - 4 G, B, L001, Rév. 0...

  • Page 22: 1. Spare Parts Required For Annual Overhaul

    PART V - PREVENTIVE MAINTENANCE ANNUAL OVERHAUL V - 1. SPARE PARTS REQUIRED FOR ANNUAL OVERHAUL Annual overhaul (after one year or 5,000 hours’ operation) involves the replacement of the following wear parts: • Valve assemblies, • Diaphragm, • Secondary diaphragm, The servicing action required for the replacement of valve assemblies, diaphragm and secondary diaphragm are described in Part VI : Servicing the liquid end and the liquid end mounting assembly.
  • Page 23 REPLACING THE SECONDARY DIAPHRAGM • Preliminary operations: Part VI - Section A1 • Removing the diaphragm: Part VI - Section C1 • Removing the secondary diaphragm: Part VI - Section D1 • Reinstalling the secondary diaphragm: Part VI - Section D2 •...
  • Page 24 PART VI - SERVICING THE LIQUID END AND THE LIQUID END MOUNTING ASSEMBLY Carry out the procedures described below: • in the order of the text in the case of annual overhaul (or 5,000 hours’ operation). • in the order specified in the section dealing with the partial servicing envisaged (Chapter V - 2.
  • Page 25 Discharge Suction Liquid end body Union Liquid end body Seal Valve assembly body * on 56.. liquid end only Fig. 6.2a : Sectional drawing of valve assemblies Discharge Suction Union Valve assembly body Seal Liquid end body * on 56.. liquid end only Fig.
  • Page 26 B1. Removing the valve assemblies See figure 6.2a. For each valve assembly : 1. Unscrew the union [2]. 2. Unscrew the valve assembly body [4] and remove the valve assembly in order to replace it. 3. Clean the tapped holes in the liquid end body [10]. B1.
  • Page 27 B1. Removing the valve assemblies See figure 6.2a. 1. Unscrew the screws ([1] and [2]) and remove the flange [4]. 2. Remove the union [5]. 3. Remove the ball guide [7] (and its seal [6], ball [8] and seat [9] equipped with two seals [6].
  • Page 28 Refoulement Aspiration Valve assembly body (suction) Union Liquid end body Seal Valve assembly body (discharge) * on 56.. liquid end only Fig. 6.2a : Sectional drawing of valve assemblies. C1. Removing the diaphragm See figure 7.2b. 1. Undo the screws [12]. Remove the liquid end body [10]. 2.
  • Page 29 Liquid end body Retaining ring Screw Oil seal clamp Diaphragm assembly Screw Connecting rod Plate Diaphragm seat Secondary diaphragm Fig. 6.2b : Sectional drawing of liquid end and liquid end mounting assembly. VI - 3. REINSTALLING THE LIQUID END MOUNTING ASSEMBLY AND THE LIQUID END D2.
  • Page 30 C2. Reinstalling the diaphragm See figure 6.2b. 1. Screw the diaphragm assembly [14] fully home into the connecting rod [21]. 2. Rotate the motor by hand in order to place the diaphragm in the "back" position. La périphérie de la membrane doit reposer sur le siège de membrane [22]. 3.
  • Page 31 B2. Reinstalling the valve assemblies See Figure 6.2a. For the suction circuit : 1. Fit the union [5] on the flange [4]. 2. Fit a seal [6] on each face of the seat [9]. 3. Position a seat [9] on the union [5], taking care to comply with the direction of fitting.
  • Page 32 TECHNICAL CHARACTERISTICS (1) Code de la pompe G51.- G52.- G53.- G58.- G68.- G73.- 54..* 54..* 54..* 54..* 56..* 58..* (2) Max. flow rate in l/h, at 1,5 1135 barg (2) Max. flow rate in l/h (Q), at 1119 max. pressure Steady state accuracy (flow rate ±...
  • Page 33 GUARANTEE The vendor guarantees his products according to the The guarantee ceases : D.M.R. general conditions of sale. • if the storage of the material, outside the The vendor’s guarantee only covers the replacement or vendors factory, does not conform to his the repair, at his cost and in his factory, of all parts recommendations or to current standard acknowledged by his technical services as being...
  • Page 34 FRANCE ASSISTANCE TECHNIQUE : Tél. 33.(0.2.32.68.30.02 Fax . 33.(0)2.32.68.30.96 PIECES DE RECHANGE : Tél. 33 (0)2.32.68.30.01 Fax . 33.(0)2.32.68.30.92 ACCUEIL : Tél. 33.(0)2.32.68.30.00 Fax . 33.(0)2.32.68.30.93 10 Grande Rue 27360 Pont-Saint-Pierre ,France www.dosapro.com email: contact@dosapro.com ESPAÑA ASISTENCIA TECNICA Y PIEZAS DE REPUESTOS : Tél.

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