GILLIG LOW FLOOR, Руководство по обслуживанию

Страница: 36 / 506

General Information
36
WELDING PRECAUTIONS
Prior to performing any welding operation on the coach, sensitive electrical components must be pro-
tected from damage. The sequence below must be followed in the order shown or damage to the volt -
age equalizer, multiplexer, or any of the electronic control units (ECU’s) may result. When the welding
operation is completed, the components must be reconnected in the reverse order of disconnection.
Ensure the following precautions are accomplished prior to welding
anywhere or anything on the coach, as permanent damage to electronic
components may result.
1. Place the main battery cut-off switch into the OFF position.
2. Disconnect the battery ground from the voltage equalizer.
3. Disconnect the battery cables from the batteries.
4. Disconnect the power connectors from the ECU’s and electronic equipment (ABS, engine,
transmission, I/O DINEX multiplexing system, wheelchair ramp, destination sign, communica -
tion equipment, voice annunciation system, communication network (such as SAE J1708, J1939,
etc.), surveillance system, and other electronic devices.
5. Disconnect the main power fuse from the multiplexer circuit (located in the lower driver’s con-
sole).
The welding ground cable should be attached to a chassis member as close to the weld site as possible,
consistent with good welding practices. Do not connect welding cables to, or weld on, control compo-
nents. Protect components from heat, sparks, and spatter, while welding.
When welding is complete, reconnect the components in the reverse order of removal.