Ericsson ORION - Introduction; Unpacking and Checking Equipment

LBI-3890
8
3
MAINTENANCE
PREVENTIVE MAINTENANCE
To ensure high operating efficiency, and to prevent mechanical and electrical failures from interrupting system
operations, routine checks should be made of all mechanical and electrical equipment at regular intervals. This
preventive maintenance should include the checks as listed in Table 1, Maintenance Checks.
NOTE
Table 1 - Maintenance Checks
MAINTENANCE CHECKS INTERVAL
CONNECTIONS
- Ground connections and connections to the voltage source should be
periodically checked for tightness. Loose or poor connections to the power source will
cause excessive voltage drops and faulty operation. When ground connections are not
made directly to the battery, the connection from the battery to vehicle chassis must be
checked for low impedance. A high impedance may cause excessive voltage drops and
alternator noise problems.
Every
6
months
ELECTRICAL SYSTEM
- Check the voltage regulator and alternator or generator
periodically to keep the electrical system within safe and economical operating limits.
Over voltage is indicated when the battery loses water rapidly. Usage of 1 or 2 ounces of
water per cell per week is acceptable for batteries in continuous operation. A weak
battery will often cause excessive noise or faulty operation.
As
Required
MECHANICAL INSPECTION
- Since mobile units are subject to constant shock and
vibration, check for loose plugs, nuts, screws, and parts to make sure that nothing is
working loose. Be sure that all screws are properly torqued.
Every 6
months
ANTENNA INSPECTION
- The antenna, antenna base, and all contacts should be kept
clean and free from dirt or corrosion. If the antenna or its base should become coated or
poorly grounded, loss of radiation and a weak signal will result.
Every 6
months
ALIGNMENT
- The transmitter and receiver meter readings should be checked
periodically, and the alignment "touched up" when necessary. Refer to the applicable
Alignment Procedure and troubleshooting sheet for typical voltage readings.
As
Required
FREQUENCY CHECK
- Check transmitter frequency and deviation, as required by the
FCC. Normally, these checks are made when the unit is first put into operation, after the
first six months, and once a year thereafter.
As
Required