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7. Maintenance
7.1 Preventive and corrective routine maintenance
Sphere base – Periodicity: every 700,000 cycles
The wear of the spheres' track must be checked
Corrective actions:
1. In case of excessive wear (chipping, perforations, fillings or grooves where the sphere
turns) replace the part.
2. If the part presents no wear, clean it and grease it using bearing grease.
Optical sensors – Periodicity: Once a year or more (depending on
environmental conditions)
This routine maintenance requires the use of a multimeter. To check for the need of
corrective actions, you must measure the CN11 with the controller turned on, according
to the instructions:
-In the multimeter, select the Vcc measuring voltage of up to 20Vca. Then, place the
black pointer on pin 4 and the red pointer on pin 1 of the CN11. Voltage should be lower
than 0.8Vcc (non-obstructed sensors). With the pointers at the same position, force the
equipment's arms to both directions (in one of the sides, the voltage should be higher
than 4.5Vcc).
-Repeat the same operation, this time placing the black pointer on pin 4 and the red
pointer on pin 3 of the CN11. The results should be the same obtained with pins 4 and 1.
-Check the sensors for signs of dust.
Corrective actions:
1. If measurements are not according the data above, replace the faulty sensor.
2. Clean the sensors using a clean brush.
Electromagnet – Periodicity: ever 7000,000 cycles
This routine maintenance requires the use of a multimeter. To check for the need of
corrective actions, disconnect the CN10 from the access control board and check the
electromagnets' resistance. The value must be between 12.5 and 13.5 ohms between
pins 1 and 2 and 3 and 4 of the electromagnet's connector. After measuring, connect
CN10 to the board again.
TIP
: If the environment presents excessive dust, execute this maintenance
routine more often.
