User's Manual

4 LS420 Universal User Manual V2.91 2003-01-21.doc
Important Note on System Operation and Start-up:
For proper operation of the LS420 display unit it must be calibrated for the configuration
of installed sensors. The display unit powers up with several green lights flashing, this
indicates that a radio communication link is being created with all load sensors, angle
sensors, wind sensors and anti-two-block switches. Once a reliable radio communication
link is established, all green lights will remain lit without flashing.
This process takes about two minutes for sensors in sleep mode. The delay is created by
the battery management function and does not affect system security. If an anti-two-
block switch detects a pending two-block event, if a load cell detects a change in load, or
if an angle sensor detects a change in angle, the appropriate radio link will be estab-
lished in less than 1/10th of a second. To immediately wake-up a load cell, lift the hook
with a load; to immediately wake up an angle sensor, change the boom angle.
In special conditions of lockout created by a missing sensor, you may bypass that sen-
sor until the next display power up by pressing bypass for 10 seconds. That sensor
green light should stop flashing and then turn off.
Contact Information:
Corporate Office: Toll Free Ph.: [phone] Toll Free Fax: [phone]
Load Systems International Dir. Ph.: [phone] Dir. Fax: [phone]
P.O. Box 820486 [e-mail]
Vancouver, WA 98682
For any information visit our website www.loadsystems.com
U.S. Western Regional Office: Central/Gulf Regional Office: North Central Regional Office:
Scott Colberg Randall Perrin Terry Petzold
Toll Free Ph.: [phone] Toll Free Ph.: [phone] Toll Free Ph.: [phone]
Dir. Ph.: [phone] Phone [phone] Phone [phone]
Fax: [phone] Fax [phone] Fax [phone]
[e-mail] [e-mail] [e-mail]