14.3.8. Replacing Filter Capacitor Board Assembly (A7 or C1x)

For ATevo models rated 16-50 Adc, the Filtering Assembly (A7) consists of a capacitor bank (C1x) and bleed resistors (R9x), mounted on a printed circuit board. Models rated 75-100 Adc, feature discrete blue electrolytic filter capacitor ‘cans’ (C1x).

Preparation:

• Shut down and lock out all power to ATevo.
• Wait several minutes to allow internal voltage potentials in capacitors to bleed off.
• Remove safety shield, and check with a voltmeter.

For ATevo models rated 16-50 Adc:

• See also Service Instruction (JD5078-00).
• Along left side of ATevo, locate the Filter Capacitor Board (A7) assembly on top of heatsink, above power board and rectifier.
  

Removal of Existing Board:

• Remove two (2) nuts from studs connecting Power Board (A2) to capacitor board.
• Remove one (1) screw at top-center of Filter Board.
• Remove existing capacitor board assembly.
  

Installation of Replacement Board:

• Place new Filter Board (A7) onto studs of Power Board, and replace two (2) nuts and one (1) screw.
• Replace safety shield, and close front panel door.
• Restart ATevo.
  

For ATevo models rated 75-100 Adc:

• See also Service Instruction (JD5078-01).
• Locate the C1 discrete capacitor can(s) near the top-left of the enclosure.
  

Removal of Existing Capacitor (C1x) Assembly:

• Remove the screws attaching the capacitor to connection wires and/or bus bar.
• Loosen the screw on the capacitor bracket at the bottom of the capacitor mounting.
• Make note of polarization ± of the capacitor screw terminals.
• Remove capacitor(s) from bracket(s).
  

Installation of New C1 Capacitor Assembly:

• Place new capacitor(s) into brackets maintaining the same polarity as the one(s) removed.
• Tighten the screw(s) on the capacitor bracket(s).
• Reconnect the connection wires and/or bus bars in the same location using the capacitor terminal screws.
• Replace safety shield, and close front panel door.
• Restart ATevo.