Tescom DS POWER SH, User Manual

Page: 49 / 57

46
V. MAINTENANCE
ATTENTION !!!
There are no parts inside the UPS or battery group that needs service or maintenance
work that should be done by user. Therefore DO NOT OPEN THE COVER OF UPS. Never
touch on any terminal of battery group. There is risk of electric shock inside the UPS even
when it is completely turned off (because of energy storage components). Therefore
unauthorized openning of the UPS cabinet for repairment, maintenance etc. is not
recommended and forbidden. Otherwise serious injuries may happen.
5.1 Scheduled Maintenance
Some parts and components used inside UPS requires periodic maintenance by service personnel.
Besides, some power equipment inside the UPS need good air circulation for cooling functions. In this
case, the UPS should be cleaned against dust periodically. Cooling fans are mechanical and moving parts
and they should be checked periodically for this reason. Also the batteries should be checked periodically
that if they are in good condition or not.
DS300SH Series UPS informs the user about these procedures when the maintenance time is up with its 3
independent hour counter as warnings:
FAN MAINTENANCE counter
BATTERY MAINTENANCE counter
GENERAL MAINTENANCE counter
This type of protective maintenance prevents small problems turning up to big failures.
DS300SH Series UPS has been designed to require very low user maintenance work. User should
only make below maintenance procedure for long years of trouble-free operation.
5.2 Daily Checks
Observe the UPS daily and check the following:
Examine the operator control panel (front panel). Ensure that all LED indicators and parameter
measurements are normal and there is no warning or alarm messages on LCD display.
Examine that there is any sign of overheating the UPS or not.
Check the rotation of cooling fans visually.
Check if there is a remarkable change in the sound of UPS or not.
Check if air inlets of the cabinet cooling system are not congested with dust or any other foreign object.
Clean them with a vacuum cleaner if any present.
Take care not to leave any object on the UPS cabinet.
5.3 Weekly Checks
1. Examine the front panel and record the results.
2. Measure (from Measurements Menu) each of three phase voltages and record the values.
3. Measure (from Measurements Menu) UPS output current values and record the values.
4. Perform a Manual Battery Test (from Commands Menu) and check the status oft he batteries.
5. Cabinet covers may be cleaned with a soft damped (not wet) cloth.