Xtreme Power Conversion Corporaon
P91 User’s Manual
Page 5
Uninterrupble Power Supply
• Use of this equipment in life support applicaons where failure of this equipment can reason-
ably be expected to cause the failure of the life support equipment or to signicantly aect its
safety or eecve-ness is not recommended. Do not use this equipment in the presence of a
ammable anesthec mixture with air, oxygen or nitrous oxide.
• Connect your UPS power module’s grounding terminal to a grounding electrode conductor.
• The UPS is connected to a DC energy source (baery). The output terminals may be live when
the UPS is not connected to an AC supply.
• Warning labels should be placed on all primary power switches installed in places away from
the device to alert the electrical maintenance personnel of the presence of a UPS in the circuit.
The label will bear the following or an equivalent text:
Before working on this circuit
Isolate Uninterrupble Power Supply (UPS)
Then check for Hazardous Voltage between
all terminals including the protected ground
Risk of Voltage Backfeed
1.5 Maintenance
• Do not try to repair the unit yourself, contact your local supplier or your warranty will be void.
• The following PRECAUTIONS should be observed:
o Remove watches, rings, or other metal objects.
o Use tools with insulated handles.
o Wear rubber gloves and boots.
o Do not lay tools or metal parts on top of baeries or baery cabinets.
o Disconnect the charging source prior to connecng or disconnecng terminal.
o Check to see if the baery is inadvertently grounded. If it is, remove the source of
grounding. Contacng with any part of the ground might result in electrical shock. The
likelihood of such shock can be prevented if such grounds are removed during installaon
and maintenance.
• UPS is designed to supply power even when disconnected from the ulity power. Aer discon-
nect the ulity and DC power, authorized service personnel should aempt internal access to the
UPS.
• Do not disconnect the baeries while the UPS is in Baery mode.
• Disconnect the charging source prior to connecng or disconnecng terminals.
• Baeries can result in a risk of electrical shock or burn from high short circuit current.
• When replacing baeries, use the same number of sealed, lead-acid baeries.
• Do not open or mulate the baery. Released electrolytes are harmful to the skin and eyes, and
may be toxic.
• The baery will discharge naturally if the system is unused for a period of me and should be
recharged every 2-3 months if unused. During normal operaon the baeries will be charged.
• Servicing of baeries should be performed or supervised by trained personnel with knowledge
of baeries and the required precauons.
• When replacing baeries, it is necessary to replace ALL baeries with the same quanty, type
& capacity.