| Tweet |
Custom Search
|
|
|
||
 Preventive Maintenance Checks and Services
Table 2-1.
S - Semiannually A - Annually
Q - Quarterly
D - Daily W - Weekly M - Monthly
Items To Be
Interval
Item
Procedures
Inspected/
No.
D
W
M
Q
S
A
Serviced
ELECTRICAL SYSTEM - CONT
q
Automatic Bus
60
Transfer
Inspect Main Control and Relay Contacts.
Switch
(1) Obtain permission from Engineer Officer to tag ABT
"Out of Service - Do Not Operate."
(2) Notify watch standers and equipment operators
involved that electric power will be secured.
(3) Deenergize normal and alternate/emergency power
supplies to ABT and timing circuit to ABT. Tag
ABT "Out of Service - Do Not Operate."
(4) Test electrical circuits; ensure they are
deenergized.
(5) Inspect main and control contacts for breaks,
burns, carbonization, corrosion and pitting.
(6) Inspect/adjust relay contacts according to
component technical manual.
(7) Remove safety tags; energize power supplies.
(8) Test operate; inspect for proper operation.
(9) Notify Engineer Officer, watch standers, and
equipment operators ABT is in service.
|
||
|
||
