Step : Record Existing Parameter Settings; Step : Deactivate The System; Step 4: Remove And Lockout All Power From The Ach400 - ABB ACH400 Series Retrofit Manual

Hvac drives. vertical electronic bypass to e-bypass, 1 - 25hp @ 208v, 1 - 50hp @ 480v (r1 ... r4 frame size drives)
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If it is still possible to power the existing unit, retrieve the programmed settings by
performing Step 2. Otherwise, proceed to Step 3.
Step 2: Record existing parameter settings.
With power applied to the existing unit, verify and record the
parameter settings of the ACH400 in the table in the back of this
document. Only those parameters that are no longer at Factory
Default need be recorded.
Press the "Menu" key on the control panel. This brings you to the
group level.
Press the "Enter" key to access the Parameter Level.
Press the "Down Arrow" key to move down the list of drive param-
eters.
The top of the screen will display the parameter number and name.
The lower right area of the screen will display the currently pro-
grammed value for that parameter.
Record the parameter values in the "ACH400" column of the chart
at the back of this document.
Step 3: Deactivate the system
Take all appropriate measures and steps to manually deactivate the system. These may include
night setback, removing the run command from the drive, alarm disable, no calls or other actions.
Properly shut down operation before moving to the next step.

Step 4: Remove and lockout all power from the ACH400.

Turn off and lockout the branch breaker or disconnect feeding the
drive system.
!
Warning! Be sure to use the safety procedures for tagging and
padlocking. These procedures may be issued by the Contractor or
by the facility or both. Use the highest level of safety.
5

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