DELTA
Installation, Operations and
Maintenance Manual
9 Maintenance
9.1Cleaning and Maintenance
9.1.1General
Special maintenance is not necessary for this system, unless the system is being operated in a severely harsh environment (dusty environment). The front panels and the cover of the DC distribution cabinet were treated with a special coating. Do not use organic cleanser or volatile solvent because corrosion damage may occur. For periodic cleaning, brush the dust from the cover and panel. If necessary, use a gentle cleanser or a lightly dampened lint free cloth to remove any dirt or smudges.
9.1.2 Periodic Maintenance
Periodic maintenance is not required for normal operation. If necessary, wipe dust from the front of the power system using a lint free, soft cloth and gently wipe the front of the distribution module, the ALU, and the rectifiers. If necessary, use a gentle detergent to clean.
Warning: Do not use a spray cleanser to clean the equipment. Using a spray cleanser directly on the equipment can result in serious equipment damage.
9.2Removing and Replacing a Rectifier Unit
9.2.1Removing a Rectifier
Warning: Do not touch the DC output bus when pulling out the PSU module.
To remove a rectifier, perform the following steps.
1.Switch off PSU module.
2.Loosen the captive retaining screws located on the bottom of the front panel.
3.Pull out the rectifier unit slowly from the shelf.
9.2.2Replacing a Rectifier
To replace a rectifier, perform the following steps:
1.Make sure the breaker on the front panel of PSU is switched off.
2.Install the rectifier unit carefully. Place the rectifier on the shelf, ensuring that the rails are on the track.
Warning: Do not force the module into the slot. If does not slide in and connect easily, remove and reset the unit.
3.Lock the rectifier into position by screwing in the captive retaining screws located at the bottom of the rectifier.
4.Switch on the PSU and check the AC ON LED lights on the front of the PSU on the front of the rectifier. AC ON LED lights.
