Parker HDK-CNG Series Operating Manual

Contents

Parker HDK-CNG Series Operating Manual Manual pdf 37 page image

Monitoring of the OperationHDK-CNG_EN_03_2016 37Monitoring of the OperationThe dryer operates fully automatically. However, you should carry out the regularchecks described in the Chapter Maintenance and repair of the dryer.Warning of sudden gas escape!During expansion the pressure is relieved suddenly through a restrictor: A loud cracking noise occurs which can injure your hearing.Therefore you should always wear ear protection when in the vicinity ofthe dryer!At all times, observe the following points when operating the dryer: Only operate the dryer within the permissible limits (see type plate). Byoperating the dryer in conditions that go beyond the defined values, the dryer issubjected to loads for which it has not been designed. This may causefunctional defects. The more powerful the dryer is, the more noise may be generated duringoperation. The noise emission level can briefly exceed 95 dB(A). Therefore, theowner must provide suitable protective equipment (e.g. ear protection). Check the dryer regularly for externally visible damage and defects. Anychanges, even in its operating behaviour, must be reported immediately to thecompetent office or person. In the event of an emergency or if a safety-relevant disruption occurs (e.g.escaping natural gas, defective components), the dryer must be shut downimmediately as described in the section Depressurise the dryer and shut itdown on page 39. The dryer may only be restarted after all defects have beeneliminated.With dewpoint-sensing control (optional)Display of dewpointIf the dryer is equipped with a dewpoint-sensing control system, the digital displayon the control shows the currently measured dewpoint.If the set dewpoint is exceeded, the system automatically completes a switchoverbetween the vessels. The dewpoint at which a switchover is made is preset at thefactory.► After commissioning or extensive maintenance work, check the dewpointdisplay at the dryer.Under certain circumstances, the desired dewpoint is only reached afterprolonged operation.