©2021 Lowell Manufacturing Co. UPS9AC-1000 (X-Rev 5/6/21)
Maintenance, service, and faults
• The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified
maintenance personnel.
• Caution—risk of electric shock. Even after the unit is disconnected from the mains (building wiring
outlet), components inside the UPS system are still connected to the battery and electrically live and
dangerous.
• Before carrying out any kind of service or maintenance, disconnect the batteries and verify that no
current is present, and no hazardous voltage exists in the terminals of high capability capacitor such as
BUS-capacitors.
• Only people that are adequately familiar with batteries and with the required precautionary measures
may replace batteries and supervise operations. Unauthorized personnel must be kept well away from
the batteries.
• Caution – risk of electric shock. The battery circuit is not isolated from the input voltage.
• Hazardous voltages may occur between the battery terminals and the ground. Before touching, please
verify that no voltage is present!
• Batteries may cause electric shock and have a high short-circuit current. Please take the precautionary
measures specified below and any other measures necessary when working with batteries:
a) Remove wristwatches, rings and other metal objects
b) Use only tools with insulated grips and handles.
C) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source and load prior to installing or maintaining the battery.
• When changing batteries, install the same number and same type of batteries.
• Do not attempt to dispose of batteries by burning them. This could cause battery explosion.
• Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin and eyes. It may be
toxic.
• Please replace the fuse only with the same type and amperage in order to avoid fire hazards.
• Do not dismantle the UPS system.
• NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
• WARNING: Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
