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Safety Instructions
Safety Instructions
Devices of the DWR series are de-
signed for use as pressure monitors
for gases in accordance with DVGW
worksheet G260 for liquid fuels (e.g.,
heating oil EL) and for steam and hot
water systems in accordance with
TRBS and DIN 4751, part 2.
Devices of the DGM series are de-
signed and approved for gases in
accordance with DVGW worksheet
G260 and the criteria for tightness set
forth in EN 1854.
The device must be used only within
the electric, hydraulic, and thermal
limits specified in the data sheet.
MU2B-0264GE51 R0220G
Inductive loads can cause contact
burns or fuse the contacts. Preventive
measures must be implemented by
the customer, e.g., by using suitable
RC elements.
When using the version ZF 1979 (oil
and grease-free), take care to avoid
recontamination of surfaces that are
in contact with the media, right
through from opening the packaging
to completed installation. Generally,
no liability will be assumed for the oil
and grease-free version.
High-quality stainless-steel sensor
parts coming in contact with media
enable the devices to be used with a
variety of media. However, a
chemical resistance test MUST be
carried out before selection.
Use with acids and other aggressive
media, such as hydrofluoric acid,
copper chloride, aqua regia, or
hydrogen peroxide is not permitted.
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