n Do not handle flammable liquids in the immediate vicinity of the device.
n Do not place heavy parts on the device.
n The devices are intended for operation on grounded networks. Opera-
tion on IT networks, for example, is not permitted.
n Turn o the device and pull out the mains plug
for service and repair work,
when moving the device,
when installing or removing interface modules or accessories.
n Do not operate the device without heat transfer liquid.
n Only skilled personnel are permitted to perform service and repair work.
n Drain the device completely before moving it.
n Do not make any technical modifications to the device.
n The devices are not designed for use in medical applications in accord-
ance with DIN EN 60601-1 and IEC 601-1!
n Only connect hydraulically closed applications to the device.
n In pressure-sensitive applications (e.g. glass apparatus) with a maximum
permissible working pressure below the maximum pressure of the device
pump, a pressure relief device must be installed to protect against gage
pressure.
n Parts of the device (e.g. pump, drain connectors) can assume surface
temperatures of over 70°C at higher operating temperatures (possible
risk of burns).
n After a power failure or when the device is switched o, parts of the
device may become hotter for a short time.
n Use suitable hoses.
n Use hose clamps to prevent the hose nozzle from slipping o the hoses.
n Check the hoses from time to time for possible material fatigue. If
a hose breaks hot liquids may leak out, thus endangering people and
materials.
n Hoses with heat transfer liquid and other hot parts may not come into
contact with the mains cable.
n Do not operate the device if leaks have been detected. Ventilate the
installation room immediately.
n The following actions may unintentionally restart the thermostat from
standby,
previously activated timer operation,
‘Start’ command over active interfaces on the device.
n Observe the permissible storage and operating temperatures of the
device.
n The device may not be exposed to fire, otherwise there is danger of
explosion.
n The device may only be operated with the casing mounted.
n If a hose and a collecting vessel are connected to the overflow pipe, the
hose and container must be suitable for the heat transfer liquid and the
maximum working temperature.
n The overflow may not be closed.
n Bring the heat transfer liquid to room temperature before draining.
n When changing to another heat transfer liquid, clean the device inten-
sively and drain it completely. It is recommended to flush the device with
the new heat transfer liquid.
V6
Integral Process Thermostats and High-Temperature Thermostats8 / 198
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