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ABB IB 6.2.15.7-1C
MAINTENANCE
ADVAC™ circuit breakers are designed for a minimum amount of maintenance. Circuit breakers in a clean, non-
corrosive environment require only annual inspection. Dusty or corrosive environments require inspection more often
at the discretion of the user. Inspection is required following each interrupted fault.
DO NOT work on an energized breaker.
DO NOT work on a breaker unless all components are disconnected by means of a visible break and securely
grounded.
DO NOT work on a breaker with power supplied to the secondary control circuit.
DO NOT defeat safety interlocks. This may result in bodily injury, death and/or equipment damage.
DO NOT work on a closed breaker.
DO NOT work on a breaker with a charged closing spring.
DO NOT use a circuit breaker by itself as the sole means of isolating a high voltage circuit.
DO NOT leave a breaker in an intermediate position in a cell. Always have the breaker in the disconnect, test or
connected position.
MECHANISM: (Refer to Fig. 4a & 4b)
The mechanism requires visual inspection of hardware, lubrication and operation during routine inspection.
Before beginning any maintenance, turn the Motor Disconnect Switch to OFF, discharge the Closing Springs
by pressing the Manual Close Button. Open the breaker by pushing the Manual Open Button. Press the Close
and Open buttons again to ensure the breaker is fully discharged. Verify springs are discharged by inspection
of the Spring Charge Indicator. Remove the front cover with a Phillips screwdriver. Correct any loose or
missing hardware.
Always lubricate the working surface of the Cams (B) and the entire Motor Linkage Assembly (P). Verify
lubrication on latching surfaces located above the Charging Motor (D) in the mechanism (See Fig 4b). Remove
any grease on the breaker frame. Use ISOFLEX TOPAS NB52 grease for lubrication (ABB No. ????????, 4
oz. tube). If the grease becomes caked and dirty, remove with a clean cloth and reapply lubrication. Use of
incorrect lubricant may cause breaker to malfunction.
Verify that the operation of the Manual Close and Open Push Buttons is free and smooth. Replace the front
cover before operation. Manually operate the mechanism a minimum of 2-5 operations to exercise the
mechanism.
MAINTENANCE
DANGER
open circuit
High Speed Mechanical Parts. Serious injury may occur.
Keep hands and tools clear of the mechanism during opening and
closing operations and anytime the closing or opening springs are
charged. Before maintenance verify Closing Spring indicator reads
“Discharged”. Opening springs are always charged when the circuit
breaker is closed.
CAUTION
5. Electrical control pulse sent to
Lubrication should only be performed using Isoflex Topas NB52. The use of any other lubricant can
void the warranty and have a detrimental effect on the operation of this device.
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