Dilo SF6 - User Manual

Questions and Answers

L
Lisa AveryJul 29, 2025
How to troubleshoot if Dilo SF6 vacuum pump does not reach the usual pressure?
- N
  Natalie BrownJul 29, 2025
  If your Dilo Security Sensors vacuum pump isn't reaching its usual pressure, the most common cause is contaminated oil, so try changing the oil. Also, check the hose or pipe connections for leaks. If there's a vacuum relief valve, make sure it's properly adjusted. Ensure there's enough oil in the reservoir and that the exhaust and oil filters aren't clogged. Clean any screens or filters on the suction connection. Clear any blockages in the suction, discharge, or pressure lines, and ensure these lines aren't too small in diameter. Inspect the inlet non-return valve and oil tubing for issues.
L
lindseymyersAug 3, 2025
What to do if Dilo SF6 vacuum pump runs very hot?
- E
  evansmarcusAug 4, 2025
  If your Dilo Security Sensors vacuum pump runs very hot, ensure sufficient air ventilation by cleaning fan cowlings, wheels, ventilation grilles, and cooling fins. Confirm that the ambient and inlet gas temperatures are within permitted limits. Replace clogged exhaust and oil filters. Ensure there's enough oil in the reservoir. If the oil is burnt, flush the pump, replace filters, and refill with new oil; consider using oil with better heat resistance or retrofitting cooling if the oil life is too short. Check that the mains frequency and voltage are within tolerance. Clear any cloggings in filters, screens, or lines, and ensure lines aren't too small in diameter.
K
Katherine LarsonAug 10, 2025
What to do if Dilo Security Sensors vacuum pump does not start?
- D
  Donna Knight MDAug 10, 2025
  If your Dilo Security Sensors vacuum pump doesn't start, first, ensure the drive motor is getting the correct voltage. Check if the drive motor starter overload protection is appropriately set, especially considering ambient temperature. Inspect the fuses and, for alternating current motors, check the drive motor capacitor. Ensure the connection cable is adequately sized to prevent voltage drop. If the pump or motor is blocked, disconnect the power, remove the fan cover, and try turning the motor by hand. If it's still stuck, separate the motor and pump to check them individually. If the motor is defective, replace it.
V
vazquezleahAug 16, 2025
Why Dilo SF6 Security Sensors vacuum pump runs very noisily?
- C
  Chad WarnerAug 17, 2025
  If your Dilo Security Sensors vacuum pump is running very noisily, it could be due to defective bearings, a worn coupling element, or stuck vanes. If the coupling element is worn, replace it. For defective bearings or stuck vanes, it is recommended to repair the vacuum pump and use only recommended oils, changing them more frequently.
H
hebertdavidAug 22, 2025
Why does the gas conveyed by Dilo SF6 vacuum pump smells displeasing?
- P
  Philip RhodesAug 22, 2025
  If the gas conveyed by the Dilo Security Sensors vacuum pump smells displeasing, it could be due to process components evaporating under vacuum or volatile components in the oil, especially after an oil change. While the oil separator retains oil droplets, it doesn't stop gaseous components. Check the process and consider using a different type of oil if applicable.

Summary

General Safety Notes

Transport and Installation

Transport Guidelines and Regulations

Installation and Electrical Connection

Details installation requirements and electrical connection procedures.

Setting into Operation

Functional Description

Starting the SF6;CF4 Mixing Unit

Describes the initial startup procedure and operating menu.

Mixing SF6 and CF4

Details the process for mixing SF6 and CF4 gases.

Evacuation Procedures

Explains how to evacuate air from the gas compartment.

Removal and Storage of SF6

Describes the process for recovering and storing SF6 gas.

Special Functions for Maintenance

Purge Compressor

Empty Device (Pressure Reduction)

Recovery and Evacuation of Filter

Pressure Test Compressor

Fault Correction

Malfunction Indications and Error Messages

Lists error messages displayed on the operating panel.

Failure List and Correction

Provides a table of error messages, causes, and corrections.

Maintenance and Functional Test

General Maintenance Procedures

Details general rules for purification, lubrication, and maintenance.

Preventive Maintenance Schedule

Functional Tests

Describes functional tests for compressor, suction pump, and vacuum pump.

General Safety Notes (Compressor)

Specific Safety Notes and Standard Symbols

Explains safety symbols and their meanings.

Basic Safety Measures

Work on Electrical Equipment and Overpressure

Setting into Operation (Compressor)

Pre-Operation Checks

Lists checks required before setting the compressor into operation.

Electrical Connection Details

Fault Correction (Compressor)

Malfunctions and Safety Precautions

Addresses malfunctions and safety during electrical work.

Compressor Fault Diagnosis

Explains how the compressor switches off and how to restart it.

Maintenance (Compressor)

Maintenance Intervals and Procedures

Lists maintenance intervals based on operating hours and procedures.

Functional Test and Disassembly

Assembly of Piston and Guide Rings

Maintenance (Vacuum Pumps)

Maintenance Schedule Overview

Oil and Oil Filter Change

Flushing and Exhaust Filter Replacement

Troubleshooting (Vacuum Pumps)

Common Problems and Causes

Lists common problems like low pressure and long evacuation times.

Troubleshooting Pump Operation

Covers issues like pump not starting, running hot, or expelling oil.

Dilo SF6 Specifications

General

Measurement Range	0 - 1000 ppm
Operating Temperature	-20°C to +50°C
Power Supply	24 VDC
Protection Class	IP65
Gas Type	SF6
Detection Principle	Infrared Absorption
Response Time	<30 seconds
Output	4-20 mA

Related product manuals

Dilo SF6-LeakPointer

12 pages