CRD-XP
Product information
Page 2 of 4
Subject to technical changes
CRD-XP_V3.9.8_PI_2020-02_EN
Writing conventions
CAUTION
Avoid the described hazard: Otherwise
minor
or
medium
bodily injury or
property damage will result.
WARNING
Avoid the described hazard: Otherwise there is danger from
electric voltage
that can lead to death or
serious
bodily injury.
For your safety
For safe operation and to avoid personal injury and equipment damage through operator error, always
read these instructions, become familiar with the device, and follow all safety instructions on the
product and in this document, as well as the safety guidelines of Wurm GmbH & Co. KG Elektronische
Systeme. Keep these instructions ready to hand for quick reference and pass them on with the device
if the product is sold.
Wurm GmbH & Co. KG Elektronische Systeme accepts no liability in case of improper use or use for
other than the intended purpose.
Target group
These instructions are intended for "service technicians".
Intended use
The device is installed for and serves the purpose of controlling the
temperature of a cold location to an adjustable setpoint.
WARNING
Danger to life from electric shock and/or fire!
Switch off the power to the entire plant when carrying out installation, wiring or removal
work. Otherwise a mains voltage and/or external voltage may still be present even if the
control voltage is switched off.
The wiring of the device must be carried out only by qualified electricians.
Use only the correct tools for all work.
Check all wiring after connection.
Take note of the maximum loads on all connections.
Never expose the device to moisture, for example due to condensation or cleaning
agents.
Take the device out of operation if it is faulty or damaged and is therefore compromising
safe operation.
Do not open the device.
Do not repair the device yourself. If the device requires repairs, send it in with an exact
description of the fault.
CAUTION
Electromagnetic interference can cause faults!
Always use shielded data cables and place them far away from power lines.
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Software revision and validity of documentation
Software version
V3.9.8
2020-02
Documentation status
Any software versions not listed are special solutions for individual projects and are not described in detail in this document.
This document automatically ceases to be valid if a new technical description is issued.
Manufacturer:
Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
For further information, see our website at