PRESSURE CONTROL GROUP 9S4380 - Caterpillar

table
Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
100% 100% 0% 0% 0% 0%
This is a 2.0-hour job
An additional 2.0 hours is allowed if the coil must be replaced.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
EXAMPLE COPY OF OWNER NOTIFICATION
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE UNDERVOLTAGE COIL ON CERTAIN UPSB125/130 AND UPSB505 UNINTERRUPTIBLE POWER SUPPLIES
MODELS INVOLVED - UPSB125/130 and UPSB505
Dear Cat Product Owner:
The DC undervoltage coil needs to be inspected and possibly replaced on the products listed below. The existing coil can stick causing the DC breaker to remain closed during a fault and may, in conjunction with other factors or circumstances, result in a risk of personal injury or death. You will not be charged for the service performed.
Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.
If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated.
You may now search for open Safety Service Letters by entering your product serial number(s). Visit the SAFETY.CAT.COM website and click on the Product Safety page for more information. Please refer the dealer to their Service Letter dated 02Sep2014 when scheduling this service.
We regret the inconvenience this may cause you, and urge you to have this service performed for your safety and satisfaction.
Caterpillar Inc.
Identification #(s)
Attached to 02Sep2014 Service Letter
Rework Procedure
For all UPSB125/130 and UPSB505 Cat Branded UPS, verify the coil date code for each battery
breaker compact NS/NSX 100630. There is one battery breaker per battery cabinet. If multiple battery cabinets are installed there will be multiple battery breakers.
For this check a UPS shutdown on bypass is mandatory
(use the common UPS isolation procedure in the Operation and Maintenance Manual)
Step 1: Trip the Battery Circuit Breaker. Refer to Image 1.2.1
Image1.2.1
Image1.2.2
Step 2: Remove DC Breaker Protective Cover by removing the two mounting screws and check the date code of the undervoltage coil. Replace the coil if the date code is from P11011 to P11537 or from S12011 to S12087. Refer to Image 1.2.2
Image1.3.1
Step 3: Check the date code of the undervoltage coil. Replace the coil if the date code is from P11011 to P11537 or from S12011 to S12087. Refer to Image 1.3.1
Image1.4.1
Step 4: Disconnect the two wires connected to the coil and Remove the coil by pushing up on the breaker lever wile pulling the coil out. The tip of a screwdriver may be used to assist pulling the coil out. Refer to Image 1.4.1
Image1.5.1
5: Install the new coil by pushing up on the breaker lever and pushing the new coil into place. Refer to Image 1.5.1
Image1.6.1
6: Reconnect the two wires to the terminals on the coil and tighten the two connecting screws. Refer to Image 1.6.1
Image1.7.1
7: Install the DC Breaker Protective Cover reusing the existing cover and two mounting screws. Install a new anti tamper