Cleaning Edge Connectors - ABB Command Series Instruction Manual

PREVENTIVE MAINTENANCE
WARNING
AVERTISSEMENT

Cleaning Edge Connectors

PREVENTIVE MAINTENANCE PROCEDURES
7 - 4
Wear eye protection when using compressed air to remove
cleaning solvents. Eye injury can result from splashing solvent.
Il faut porter une protectino pour les yeux pendant qu'on utilise
l'air comprimé pour enlever les solvants nettoyants. Une
éclaboussure du solvant pourrait causer une blessure aux
yeux.
If the printed circuit board needs minor cleaning, remove dust and
residue from board surfaces using clean, dry, filtered compressed air
or an antistatic field service vacuum cleaner.
Do not wash printed circuit boards.
Another method of cleaning the printed circuit board is:
1. Spray or wipe the board with isopropyl alcohol (99.5% electronic
grade). Use a foam tipped swab to wipe the circuit board.
2. When the circuit board is clean, remove excess solvent by using
compressed air to blow it free of the circuit board.
ABB does not recommend the repair of printed circuit boards in the
field. Equipment requiring repair should be returned to the factory or
the nearest ABB service center.
Equipment required:
Isopropyl alcohol, 99.5 percent electronic grade.
•
Distilled water.
•
Eberhard Faber (400A) pink pearl eraser.
•
To clean edge connector contacts:
1. Use a solvent mixture of 80% isopropyl alcohol (99.5% electronic
grade) and 20% distilled water.
2. Soak a lint-free cloth with the solvent mixture.
3. Work the cloth back and forth parallel to the end connector con-
tacts.
4. Repeat with a clean cloth that is soaked with the solvent mixture.
5. Dry the edge connector contact area by wiping with a clean
lint-free cloth.