HP PowerTrust A3589A, Manual

Page: 231 / 257

Appendix D D-13
Field Replaceable Units
Removal and Replacement Procedures
If it is blinking, refer to “Power Failing the UPS” in Appendix C for possible causes and
actions.
17.Turn the control panel Output On/Output Off switch to
Output On
.
18.Power on the load.
NOTE
After installing the Service Bypass Unit, check that the computer is not
performing critical processes, then repeat the load test. For procedures, refer
to “Load Testing” in Chapter 5.
Also, after installing replacement UPS equipment, test it by power failing the
UPS. For procedures, refer to “Power Failing the UPS” in Appendix C.
Removing and Replacing Hardwire Conversion Kit (30A
Service Bypass Unit Only)
WARNING
The following procedure applies to the 30A Service Bypass Unit only
and should be performed by a qualified electrician.
The Hardwire Conversion Kit contains the following items:
1- Metal plate preassembled with 2 plastic strain reliefs
4- Torx screws (#25 10-32 x 1/2')
2- Labels
Tools required:
• #25 Torx driver
• Flathead screwdriver
• Wire cutter, wire stripper
Removing the existing conversion plate (if any):
1. If the UPS is operating, shut it down using the following procedure:
a. Turn the Output On/Output Off switch to
Output Off
.
b. Turn the UPS/BATTERY switch to
DISABLE
.
c. Turn OFF the MAIN INPUT circuit breaker.
d. DISCONNECT THE LINE CORD FROM THE AC SOURCE.
2. At the rear of the Service Bypass Unit, remove the four Torx screws holding the left
Access Panel and remove it. See
4
in Figure 1-3.
3. Disconnect the input and output wires by loosening the screws on the terminal block.
See Figure D-2.
4. Remove the four Torx screws holding the conversion plate on the right and remove it.