Replacing Defective Components - HindlePower AT30 SERIES Operating And Service Instructions

SERVICING THE AT30

3.5. REPLACING DEFECTIVE COMPONENTS

High voltages appear at several points inside the AT30. Use extreme
caution when working inside the enclosure. Do not attempt to work
inside the AT30 unless you are a qualified technician or electrician.
Disconnect and lock out all power from the AT30 before starting to
remove or replace any components. Turn off ac power at the
distribution panel upstream from the charger. Disconnect the battery
from the AT30 dc output terminals (TB1+/-).
Wait several minutes... to allow voltage potentials in dc filtering
electrolytic capacitors (C1/C2) to bleed off.
While performing the following procedures, refer to the standard drawings
in Appendix C for information on identifying internal components.
Removing the safety shield (if present)
AT30s housed in NEMA-1 Style-5018 and Style-5030 enclosures feature
an acrylic safety shield as a second protective barrier between the user and
the internal components. Some repair procedures requires removal of the
shield to that covers the internal components mounted inside the
enclosure.
Detach the shield by removing the side fasteners from the front lip of the
enclosure. Do not lay the shield on top of the AT30. The top vents are
required for cooling. Always re-install the acrylic safety shield before
restarting the AT30.
Hazardous ac and dc voltages are present inside the AT30, on the I/O
panel (TB1) terminals and certain internal components.
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WARNING
NOTICE
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CAUTION