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ST750
G
ENERAL
H
ANDBOOK
667/HB/33750/000
Page 98
Issue 6
7. ROUTINE MAINTENANCE PROCEDURES
This section contains a list of checks to be performed at an ST750 on a regular
basis (normally annually).
If for any reason, the power is switched off to the ST750, then a total installation
Megger test should be carried out, as defined in the General Testing Handbook.
7.1 ROUTINE INSPECTION OF SIGNAL EQUIPMENT
Check all signal heads/aspects for damage and take any necessary corrective
action.
Check all signal heads for correct alignment with their respective approaches.
Check all pole top cable connections; ensure that they are sound, secure and not
seriously corroded.
Check that all top caps are fitted and are not damaged.
Check that all poles are secure in the ground and are not leaning or damaged.
7.2 ROUTINE INSPECTION AND ELECTRICAL TESTING OF ST750
It is suggested that these procedures be performed in the order listed.
Examine the cabinet and equipment mounting frame for serious damage. The
cabinet would normally only be replaced if it has been damaged to the extent that its
security has been breached or that water or dirt is entering.
Check the base seal for integrity. If damaged, perform repair or advise customer
dependent on the terms of the contract which is in place.
Open the door(s), both the main (if the cabinet has one) and the manual panel;
check that the screw-locks, lock and hinges operate freely. Inspect the door and
lock, and check the lock and catch-plate for security. Replace or tighten as
necessary. Lubricate as necessary with good quality penetrating type oil.
Inspect the manual panel gasket, ensuring it is intact and in the correct position.
Replace as necessary ensuring that the surface is clean before fitting.
Check the manual panel for any damage and replace if necessary. Check that all
functions operate correctly. Press the lamp test keypad and check that all LEDs are
operational.