Instruction Manual PUC 28
5
2 Safety precautions
2.1 Appropriate use
The PUC 28 is used to test pressure, temperature and humidity.
Always observe the operating requirements
— particularly the permissible supply voltage —
indicated on the rating plate and in the “Technical data” section of this manual.
The device may only be handled as indicated in this manual. Modifications to the device are
prohibited. The manufacturer is not liable for damages caused by improper use or failure to
follow these instructions. Violations of this type render all warranty claims null and void.
2.2 Shipping, assembly, electrical connections and start-up
Do not close the pressure ports during shipping. Changes in barometric pressure may damage
devices with low measurement ranges.
Assembly and the electrical connections should only be handled by professionals. They should
be given proper training and be authorized by the operator of the facility.
The instrument may only be operated by appropriately trained individuals who have been
authorized by the operator of the facility.
The functional test must not be performed using compressed air or breath because otherwise
devices with low measurement ranges could be damaged.
Measurement errors may occur if the instrument is not kept protected from sunlight. Specific
safety precautions are given in individual sections of this manual.
The first step is to create a recess in the wall (approx. 232 x 132 mm) at the site of installation
using the hole template provided. See section entitled “Assembly” for additional assembly
steps.
The instrument must be grounded at the ground terminal.
2.3 Troubleshooting, maintenance, repairs, disposal
The individual responsible for the electrical connections must be notified immediately if the
device is damaged or if malfunctions occur that cannot be corrected as indicated in the section
entitled “Troubleshooting”.
This individual must take the instrument out of service until the malfunction has been corrected
and ensure that it cannot be used unintentionally.
Always unplug the power cord before opening the device!
This instrument requires no maintenance.
Only the manufacturer may perform repairs that require the housing to be opened.
The electronic components of the device contain environmentally hazardous materials and
materials that can be reused. The device must therefore be sent to a recycling plant when you
no longer wish to use it. Compliance with the environmental codes of your particular country is
mandatory.
