142. Place the rack mounting brackets on both sides of theDisk Recorder and tighten with the four suppliedscrews (M4 X10).3. Install the Disk Recorder with the rack mounting brack-ets in the rack, securing it with four screws (not includ-ed).Cautions:• The cooling fan inside the Disk Recorder is subject towear and needs to be replaced periodically.• Do not block the ventilation opening or slots in thecover to prevent the appliance from overheating.Always keep the temperature in the rack below 45°C(113°F).• If the rack is subject to vibration, secure the rear of theappliance to the rack by using additional mountingbrackets (procured locally).Digital DiskRecorderWJ-HD500•••FS1616Remove 4 rubber feetDigital DiskRecorderWJ-HD500500••• FS16Digital DiskRecorderWJ-HD 500500•••FS1616 Mounting into the RackThe Disk Recorder can be mounted into the rack asdescribed below.1. Remove the four rubber feet by removing the fourscrews from the bottom of the Disk Recorder. Installing the Optional Hard DiskAt the time of shipment from the factory, the WJ-HD500Disk Recorder is equipped with one hard disk drive; anoptional drive can be installed to increase the hard diskstorage capacity.To install the optional hard disk, follow the proceduresbelow.1. Unplug the power cord from the WJ-HD500 DiskRecorder, or disconnect the plug from the AC outlet.2. Remove the top cover of the Disk Recorder by remov-ing the 11 screws, as shown below.3. Plug in the power cable and prepared interface flatcable into the power inlet and interface connector of thehard disk.Disk RecorderWJ-HD5004. Attach the absorbers to the chassis, as shown in thefigure.5. Place the hard disk onto the chassis, and then fix it withthe four screws and sleeves, as shown in the figure.6. After installing the hard disk, secure the top cover bytightening the screws.