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Installation and operating manual
EN
40 DRYPOINT
®
AC 410 – 495 | DRYPOINT
®
AC 410 – 495 MS
7.5. Maintenance of 2/2-way solenoid valve
DANGER
Incorrect performance of inspection and maintenance tasks
Incorrectly performed inspection and maintenance tasks can cause serious or even fatal
injury and/or damage to property.
Deposits and dirt on components, and seals that are worn or have been damaged by ageing
might result in plant malfunction.
• All maintenance work must be performed by trained technical personnel and with suitable
tools.
• Before carrying out any maintenance work, depressurise the piping system and
disconnect the solenoids from the power supply. It is not necessary to remove the valve
from the piping system.
• Spare parts are available in the form of wearing parts kits. For order numbers, see spare
parts lists in the appendix.
NOTE
Responsibility for the proper performance of inspection and maintenance tasks
It is the responsibility of the plant operator to devise appropriate inspection and maintenance
intervals, with reference to the actual operating conditions of the valve.
In addition to the prescribed services, we recommend servicing/cleaning based on the actual operating conditions,
and also in the event of noticeable changes to the switching times or if there are audible switching noises.
Depending on the ambient conditions, the solenoid should be inspected for cracks and deposits and proper
electrical connection. Check the seal to make sure that there is no leakage.
7.5.1. Installation
NOTE
Handling of solenoid
• Do not use the solenoid as a lever!
• The solenoid can be installed in any position.
• We recommend however installing it vertically facing upwards, as this reduces the risk of
wear and contamination.
• Inspect the solenoid valve for visible damage.
• Before installing the valve, clean the piping system. Dirt can cause malfunctions.
• Do not remove the protective caps at the connections until just before installation into the piping system.
•
To seal the fitting thread G according to DIN ISO 228-1, we recommend using PTFE sealing tape.
• Prevent stress on the valve housing that might be caused by improperly aligned pipes or the use of unsuitable
tools and sealing materials.
7.5.2. Electrical connection
DANGER
Electric power
Incorrect connection or damaged components can cause serious or even fatal injury.
• Connect the protective conductor to the terminal marked for this purpose!
• Prior to pressurising the system, we recommend performing a function test. A clicking
noise must be audible when the system switches over (magnet armature reaches stop).
• Before connecting a plug to a device socket, ensure that the socket is not powered!
• DC solenoids are destroyed when operated without magnet armature.
Connect the solenoid according to the relevant electro-technical regulations and standards.
After connection, seal the terminal chamber to achieve the necessary protection class.
Ensure that the cable opening is properly sealed and that the gasket between the solenoid and the device socket is
correctly positioned.
Protection class IP 65 can only be achieved with proper installation and sealing.
Tighten the central screw of the device sockets with max. 60 Ncm.
Avoid deformation of the housing!
For connections marked "+" and "-", ensure correct polarity! Connections that are not marked can be connected to
any of the conductors.
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