Maintenance; Scheduled Maintenance; Daily Checks; Weekly Checks - Tescom DS330H User Manual

Uninterruptible power supply system

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DS 300 HB Series � 3/3 � 40-80 kVA � DSP CONTROLLED UPS

USER MANUAL

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.

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.

DS300HB 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.

DS300HB 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.

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.

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.

VII. MAINTENANCE

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