About your safety
HDK-CNG_EN_03_2016
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With ATEX-compliant dryers:
Prior to all work, first cancel the Ex zone (in acc. with the operating
instructions of the operator). Then carry out the work.
When purifying or drying a critical gas, always pay attention to the hazard
notices relating to that gas.
Conversions and modifications
Without prior approval by the manufacturer, no conversions and modifications
must be made to the dryer! Any non-approved modifications may restrict the
operational safety of the dryer and cause damage to property or personal injury.
Notes about the installation location
The ambient conditions at the installation location must comply with the
regulations applicable to ATEX-compliant dryers (94/9/EC) (good ventilation, no
naked flame, smoking ban).
Handling of drying and purifying agents
Under certain circumstances, it can be hazardous to work with the drying agent
involved. Therefore observe the following instructions:
Avoid the creating of sparks!
An ignition source can arise through the friction caused by emptying and filling
drying and purifying agents. That in turn entails the hazard of sparks being
caused.
For work in Ex-protected rooms, the vessels must all be
earthed/grounded while being filled and emptied.
When emptying, only use Ex-protected suction tools.
Before changing the drying agent, flush the dryer with inert gas and
depressurised it.
The fresh drying agent can heat up to the evaporation point of water if brought
into contact with water.
When filling and emptying drying agents, wear a dust mask and eye protection!
The old / used drying agent can still contain residual quantities of the product
gas, and may continue to degasify.
When drying agent gets spilled, there is a risk of slipping on the beads of
dessicant.
Notes about safety equipment
The safety equipment used to comply with maximum operating pressure and
permitted fluid temperature must be provided by the operator.
The gas escaping from the safety valve must be directed away appropriately by
the operator and rendered harmless (e.g. gas flare).
The operator is responsible for the operation and/or maintenance of the safety
valve. The nature and scope of maintenance work is determined by local policy
and by the type of safety valve installed.
