Honeywell HC900 사용자 설명서

Removal and Replacement Procedures - Safety Considerations - PLAN AHEAD! 

154 

  HC900 Hybrid Controller Installation and User Guide 

Revision 5 

  

9/03 

1. 

If the battery is removed from the Controller Module when AC power is not 

applied, the content of SDRAM will be lost. 

Before beginning this procedure, upload and SAVE a copy of the configuration, or ensure that a 
previously SAVEd copy of the current configuration is available. 

2. 

Apply site AC power to the Power Supply that is associated with the controller Module..  

3. 

Open the plastic door at the top of the Controller 
Module. 

Press the latch on the battery cover to the right to 
release the battery holder, and use the molded-in 
extension on the battery holder to extract the 
holder. 

Note the orientation of the battery-holder assembly 
(battery toward the left). 

 

 

4.  

The battery is retained in the holder by spring 
tension of the plastic holder itself. 

Extract the battery from the holder by using your 
thumb to apply pressure to the front end of the 
battery, and rotating it to the left.  

Insert the negative end of the new battery into the 
back end of the holder, and press on the battery so 
that it snaps into the holder. 

To ensure that the battery is seated properly, rotate 
it in the holder, using finger or thumb pressure 
toward the positive (front) end of the battery. 

 

5. 

While maintaining proper orientation (battery toward the left), slide the battery holder into the 
slot in the Controller Module until it snaps into place.