5464-834 WOODWARD

To prevent damage to a control system that uses an alternator or 

battery-charging device, make sure the charging device is turned off 

before disconnecting the battery from the system. 

Electrostatic Discharge Awareness 

Electrostatic 

Precautions

Electronic controls contain static-sensitive parts. Observe the 

following precautions to prevent damage to these parts: 

· Discharge body static before handling the control (with power to 

the control turned off, contact a grounded surface and maintain 

contact while handling the control). 

· Avoid all plastic, vinyl, and Styrofoam (except antistatic versions) 

around printed circuit boards. 

· Do not touch the components or conductors on a printed circuit 

board with your hands or with conductive devices. 

To prevent damage to electronic components caused by improper 

handling, read and observe the precautions in Woodward manual 

82715, Guide for Handling and Protection of Electronic Controls, 

Printed Circuit Boards, and Modules. 

Follow these precautions when working with or near the control. 

1. Avoid the build-up of static electricity on your body by not wearing clothing 

made of synthetic materials. Wear cotton or cotton-blend materials as much 

as possible because these do not store static electric charges as much as 

synthetics. 

2. Do not remove the printed circuit board (PCB) from the control cabinet 

unless absolutely necessary. If you must remove the PCB from the control 

cabinet, follow these precautions: 

· Do not touch any part of the PCB except the edges. 

· Do not touch the electrical conductors, the connectors, or the 

components with conductive devices or with your hands. 

· When replacing a PCB, keep the new PCB in the plastic antistatic 

protective bag it comes in until you are ready to install it. Immediately 

after removing the old PCB from the control cabinet, place it in the 

antistatic protective bag.