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 Preventive Maintenance Checks and Servicer - Cont.
Table 2-1.
A - Annually
S - Semiannually
Q - Quarterly
D - Daily
W
-
Weekly
M
-
Monthly
Item To Be
Interval
Item
Procedures
Inspected/
No.
D
W
N
Q
S
A
Serviced
SOUND POWERED TELEPHONES - CONT
Check mechanical operation of each rotary switch. Document
Rotary
16
l
any worn part or incorrectly operating parts and refer to
Switches
unit maintenance.
Check the two-way voice capability of the unit. Select other
Operation
stations and conduct a two-way conversation.
a. Transmissions and receptions should be clear,
undistorted and easily understood.
b.
Check the audible and light indicators. On models SELR
and SFLR the indicator lights should light along with
t h e calling signal.
TANK LEVEL/INDICATOR SYSTEM
Tank Level
Inspect for security, breakage, and proper operation.
17
l
Replace defective lights or lamps as specified in
Indicator
System Lights
paragraphs 2-32 or 2-33.
and Lamps (5)
Tank Level
Inspect for defective fuses. Replace defective fuses as
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l
specified in paragraphs 2-32 or 2-33.
Indicator
System Fuses
(6)
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