LEYBOLD E 250 User Manual

E and DK - Pumps
Rotary Piston Pumps
E 250, DK 200
Cat. No.
105 36
111 16
895 08
895 09
895 10
166 17
166 37
Operating Instructions
GA 02.200/8.02
Vacuum Solutions
Application Support
Service
LEYBOLD VACUUM

LEYBOLD E 250 Specifications

General

Type	Centrifugal Pump
Model	E 250
Voltage	230 V
Pumping speed	250 l/min
Max Flow Rate	250 l/min
Frequency	50 Hz

Summary

Product Description

1.1 Design and Principle of Operation

Details the design and functional principle of E and DK series rotary piston pumps.

1.3 Technical Specifications and Accessories

Pump Operation

2.1 Installation Guidelines

Guides on proper pump placement, mounting, and environmental considerations for safe operation.

2.2 Electrical Connection Procedures

Instructions for correctly connecting the pump's motor to the power supply, including safety precautions.

2.3 Vacuum System Connection

Explains how to connect the pump to the vacuum system, covering intake and exhaust sides.

2.4 Pump Start-up

2.5 Operating Modes and Procedures

Maintenance and Service

3.1 Recommended Maintenance Schedule

3.2 Checking Oil Level and Condition

3.3 Pump Oil Change

Provides step-by-step instructions for changing oil in the pumping chamber and gear.

3.6 Pump Disassembly and Reassembly

Detailed guide for taking apart and putting back together the pump components.

3.6.1 Preparations for Disassembly

3.6.3 Disassembling the Motor End

3.6.4 Disassembling the Front End

3.6.5 Removing Shaft and Intermediate Plates

3.6.6 Cleaning and Checking Parts for Wear

3.6.7 Reassembling the Pump

3.7 Leybold Service and Returns

Troubleshooting Guide

4 Troubleshooting

Provides a list of common faults, their possible causes, and recommended remedies.