Installation
HDK-CNG_EN_03_2016
29
Connect piping
In order to ensure that the dryer operates to optimum standards, the dryer must
be assembled into the natural gas system free of all stresses.
► Ensure before connection that all inlet and outlet natural gas lines and valves
are clean and undamaged.
► Check the bolt connections and retighten if necessary, as they could have
worked loose during transportation.
► Remove plugs from natural gas inlet and outlet points and from the
recuperation line.
All piping must be free from any stress and tension whatever!
Pipes subject to stress may burst due to the load placed on them during
operation. This may cause damage to property and personal injury.
► Use steel pipes to connect the dryer to the natural gas system.
► Earth/ground building-related pipework.
► The connection lines for the upstream filter are to be installed at a slight
incline in the direction of the upstream filter.
► One shutdown valve is to be installed at each of the natural gas inlet
and -outlet ends of the dryer.
►
If you fit a bypass line
with additional
shutdown valve:
Fit the line such that, when carrying out maintenance work on the dryer, the
line system can continue to be supplied with natural gas.
Installing the electrical connection
Warning! Risk of injury from electrical voltage
Work on the electrical system must only be carried out by qualified
technical personnel!
With ATEX-compliant dryers
All work on the electrical system must be carried out with the dryer
properly earthed/grounded.
Existing Ex zones near the dryer may need to be cancelled.
The Ex protection of electrical components must not be disabled.
Therefore treat these components with the requisite level of care and
attention.
The dryer is operated by 3-phase AC current.
Connection therefore takes the form of a 5-core feed wire (see following section).
