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Jesco MEMDOS E - User Manual

Jesco MEMDOS E
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MEMDOS E/DX
Motor-driven Diaphragm Dosing Pump
Operation manual
Read this operation manual before start-up!
To be retained for future reference.
EN
02
Dosing
Conveying
Control
Liquids
Gases
System
s

Table of Contents

Questions and Answers

  • C
    Crystal MyersAug 5, 2025
    Why is my Jesco Water Pump not delivering enough output?
    • B
      bethhowardAug 5, 2025
      If your Jesco Water Pump's output is too low, start by checking the valves for leaks or blockages. Clean the valves and vent the pump, referring to the "Start-up" section for guidance. Also, tighten any loose screw connections. Ensure that the suction line isn't leaking or blocked, and clean or seal it as needed. If the suction lift is too high, position the pump at the inlet, install a pulsation damper on the suction side, or use a priming aid. Finally, if the viscosity of the fluid is too high, consider installing spring-loaded valves, increasing the pipe diameter, or using a special dosing head (contact the manufacturer for this). Also ensure that the valves are correctly installed with the valve balls above the valve seats.
  • C
    carlsalazarAug 20, 2025
    What to do if my Jesco MEMDOS E Water Pump has no stroke movement?
    • J
      Jennifer WhiteAug 20, 2025
      If your Jesco Water Pump has no stroke movement, first, make sure the stroke length adjusting knob is set correctly and not at zero. If that's not the issue, the diaphragm return spring may be broken and needs replacement. Lastly, verify that the power supply is on.

Summary

General and Safety Instructions

Safety Instruction Symbols

Explains symbols used for warnings and hazards in the manual.

Personnel Qualifications and Training

Details the necessary qualifications and training for personnel performing installation, operation, and maintenance.

Key Safety Guidelines

Covers critical warnings, hazards, safe working practices, and specific instructions for operators.

Chemical Handling and Practices

Provides precautions for dosing chemicals, including PPE and handling procedures.

Transportation and Delivery

Outlines guidelines for safely transporting and handling the dosing pump and its components.

General

Proper Use of the Dosing Pump

Specifies the intended purpose and permitted applications for the dosing pump.

Structure of the Dosing Pump

Identifies and labels the main components of the MEMDOS dosing pump.

Function

Principle of Operation

Explains the working mechanism of the diaphragm dosing pump and stroke adjustment.

Dimensional Drawings

Technical Data

Performance Curves

Installation

General Installation Information

Covers general rules, material selection, and specific ATE servomotor installation.

Location, Drainage, and Electrical Setup

Specifies optimal placement, drainage, and electrical connection procedures for the pump.

System Connections and Accessories

Details wiring diagrams, level control, valves, and injection nozzle installation for the system.

Installation Example

Illustrates a typical system setup with the dosing pump and its accessories.

Operation

Stroke Adjustment and Controls

Explains how to adjust stroke length and details the MEMDOS DX operating elements and switching.

Operating Modes, Alarms, and Settings

Describes manual, pulse, and analogue control modes, alarm indications, and other settings.

Connection Assignments

Details wiring and cable assignments for the MEMDOS DX control unit and motor connections.

Start-up

MEMDOS E with ATE Servomotor Start-up

Guides the start-up procedure for the MEMDOS E when equipped with an ATE servomotor.

Shutdown

Disposal of Old Equipment

Provides instructions for the proper disposal of the dosing pump and associated materials.

Maintenance

Lubrication and Bearing Care

Covers oil specifications, fill quantities, and bearing inspection for pump longevity.

ATE Servomotor Maintenance

Provides guidance on inspections for the optional ATE servomotor, especially in demanding conditions.

Component Replacement (Diaphragm & Valves)

Details procedures for replacing the diaphragm and cleaning/installing valves, including torque specifications.

Explosion-Proof Dosing Pumps (ATEX)

General ATEX Information

Introduces explosion-proof versions and their suitability for hazardous areas.

Specific Conditions and Flammable Media

Outlines requirements for zone classification and precautions for dosing flammable media.

Troubleshooting

Spare Parts

External Vent (Optional)

Warranty Claim

Jesco MEMDOS E Specifications

General IconGeneral
Pressureup to 16 bar
Stroke Lengthadjustable
Protection ClassIP 65
Frequency50/60 Hz
TypeDiaphragm dosing pump
Stroke FrequencyUp to 180 strokes/min
Materials (Pump Head)PVC, PVDF, stainless steel
ControlManual or automatic
Power Supply230 V AC, 50/60 Hz
Flow Rate0.5 - 20 l/h
Powervaries with model
Voltage230 V
Inlet Diametervaries with model
Outlet Diametervaries with model
Weightvaries with model

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