2.20 Redesigned Water Pressure Transducer Replacement
2.20.1 Remove a Redesigned Water Pressure Transducer
Prerequisites
Tools Required:
7/8-in. wrench
1 1/16-in. wrench
Absorbent rags
Teflon tape
Time Required:
15 minutes
Procedure
1. Power down all of the cabinets in the row.
a. Enter the following command in a terminal window on the SMW:
smw$
xtcli power down Hostname
Hostname
is the cabinet, system, or partition ID; examples include
c0-0
(for a cabinet),
S0
(for a
system), or
p0
(for a partition).
b. For cabinets, place main circuit breakers CB1 and CB2 in the OFF (down) position.
c. For blower cabinets, place the MAIN DISCONNECT switch on the rear panel of the blower cabinet PDU
in the OFF (down) position.
Figure 77. Circuit Breakers for Cabinet (left) and Blower (right)
2. Open the rear door of the cabinet.
3. Remove the velcro securing the protective foam cover over the valve.
4. Slide the protective foam cover off the valve.
5. Disconnect the control cable from the transducer.
6. Hold the valve in place with a 7/8-in. wrench.
7. Once the valve is secure, loosen the transducer with a 1 1/16-in. wrench.
System Cabinet Procedures
84