Parker HDK-CNG Series Operating Manual

Contents

Parker HDK-CNG Series Operating Manual Manual pdf 51 page image

Identify and eliminate faultsHDK-CNG_EN_03_2016 51Identify and eliminate faultsStop condition of dryerIn stop condition, the main valves on the dryer are open. When the mainvalves are open, the dryer is permeated with humid natural gas. This cancause damage to dryer and drying agent.In stop condition, ensure that gas supply is stopped, or that dryer isturned off at the mains isolator switch.There are different fault types. With most electrical faults (e.g. short circuit,defective fuse etc.), the main valves close. Faults on the dryer (or 'adsorber')become noticeable e.g., due to unusual noises and dam pressures.The fault message is shown in the display until the fault has been remedied andthen acknowledged. To acknowledge a fault, acknowledge each one individuallyusing the relevant keystrokes.Note:A fault (alarm) is shown on the Alarm menu display with date andtime.Summary of faultsIn the case of some process faults, the dryer will continue to operate for sometime.Table of possible faultsFault Possible cause RemedyDryer stopsfault heater Motors protection switch QA 1 hastriggered.Replace heating.Temperature limiter A 2 triggers. Reset temperature limiter by pressing theAcknowledge Fault keypre alarm heater Temperature limiter A 2 triggers. Heating temperature is higher than planned.fault fan(option)high power consumption onregeneration gas cooler QA3Check and if necessary replace the regenerationgas cooler Motor temperature of regeneration gascooler too highCheck and if necessary replace motor function. fault valve Y1-Y7 Solenoid coil defective Replace fuse and solenoid coil and/or valve. fault PT100 sense Sensor defective Replace sensor.Cable defective Replace cable.