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L25RS
Users Manual
21 pgs187.82 Kb0

LifTek L25RS Users Manual

LIFTek™ Corporation
L25 SERIES
RADIO ANTI- T WO-BLOC K SYSTEM
OPERATOR and MAINTENANCE
MANUAL
Manual P/N L2560 rev -
August 2000
This device has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and radiates radio frequency energy, and if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense.
RAT SWITCH (transmitter) MODEL-S/N L25RS - ______ RADIO A2B DISPLAY (receiver) MODEL-S/N L20D - ______
for
PARTS, SALES AND SERVICE
CONTACT YOUR DEALER
file: MBTmanual1.doc
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
1
WARNING! READ THESE INSTRUCTIONS
Read and follow all safety rules and instructions before operating this equipment.
Improper operation can lead to system failure, property damage, personal injury or loss of life!
Customer responsibilities
The manufacturer has taken every precaution to make this a reliable system.
However, it is the operator’s responsibility to follow the instructions in this manual, and to use the system properly.
Training
1. Read this manual carefully. Learn how to operate the system and how to perform daily inspections and test procedures.
2. Never allow anyone who has not been properly trained to operate the system.
3. Use the system only as intended and as described in this manual.
4. Keep the manual, refer to it as needed, and review it often.
5. If you don’t understand something - call the factory or distributor. There is no charge for this assistance.
Inspection and Test
6. Follow the daily inspection and test procedures.
7. Failure to inspect and test the system can lead to system failure - see warnings.
8. Test the horn for loudness ­empty any water that collects in the front cavity (especially if mounted outside). Water can reduce sound output
Operation
9. Understand how the system works and prevent and/or correct any conditions that might degrade the system performance.
10. Do not operate a damaged system.
11. Inspect and test the system thoroughly if you suspect physical damage of any kind has occurred, including: contact with structures, tree branches, or an excessive pull on the line weight.
12. Maintain a clear line of sight between the boom tip transmitter and the display panel receiver. Metal barriers in the path can block the signal and prevent the system from working.
13. Do not rely on this system if excessive radio interference is present. This may occur near radio/TV towers. If in doubt, perform a System Test.
14. Do not shorten the chain. Do not alter the system in any way without written approval from the manufacturer.
15. Do not use the switch override clip if the flag is missing.
16. You should monitor all active winch lines with an operating two-block switch.
17. Always keep the weight securely fastened around the crane cable or stowed in the cab. NEVER allow the weight to swing freely from the switch. A free swinging weight is a hazard.
18. Never stand under any suspended object.
19. Never use the system as a control device to routinely stop the hook while winching up.
WARNING!
This is an operator’s aid. Never rely solely on any system to prevent two-blocking. Part failure,
excessive radio noise, or damage can prevent two-block detection.
No system is 100% failsafe.
Two-blocking can cause property damage, personal injury or loss of life!
Check the system for proper operation as recommended in this manual to reduce the chances of a
malfunction during crane operation.
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
2
TABLE OF CONTENTS
L25 Operator and Maintenance Manual
Warnings and Customer Responsibilities............................................................................2
L25 Introduction..................................................................................................................4
Quick Reference For Operators.......................................................................................... 4
RAT SWITCH Operation....................................................................................................5
How to rig, inspect, test and override.
Display Panel Operation
KEYS:...................................................................................................................... 6
BYPASS...................................................................................................... 6
HORN OFF................................................................................................. 6
TEST (display only).................................................................................... 6
LEARN/ UNLEARN RAT SWITCH........................................................ 7
LIGHT S AND ALARM S: ......................................................................................8
TWO BLOCK alarm...................................................................................8
RECEIVING: Switch 1, 2...........................................................................8
RECEIVING: Low Battery alarm............................................................... 8
NOT! RECEIVING alarm........................................................................... 8
Operator’s Daily Inspection and System Test...................................................................10
Maintenance Procedures ................................................................................................... 11
How To Open The Cover...................................................................................... 11
How To Replace The Battery and Cover..............................................................11
How To Replace The RAT Antenna.....................................................................12
How To Test And Service The Switch Mechanism..............................................12
How To Change The Fuse In The Display............................................................ 13
Display Wiring......................................................................................................13
User Notes............................................................................................................. 14
Appendix...........................................................................................................................15
Warranty, Service, Background - A2B Systems................................................... 16
L25 System Specifications.................................................................................... 17
Parts List................................................................................................................ 18
Special Instructions (supplements as needed)...........................................................
Operators Daily Inspection And System Test (repeated)..........................................
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
3
L25 INTRODUCTION
♦
The L25 Radio Anti-Two-Block System
provides a high reliability wireless link - on any
crane - from the boom tip to the operator’s station.
♦
The L25 eliminates the cable reel and all other A2B wiring on the boom
(in most cases) -
including jib and auxiliary switch connections. Boom wiring, especially the cable reel cable, is highly vulnerable to damage from contact with structures, trees etc. In addition, jib wiring is often damaged by a failure to disconnect cables before extending a telescopic section or stowing a jib. The L25 Radio A2B System eliminates these types of failures.
♦
The L25 battery is guaranteed for 5 years.
This saves you the very real inconvenience and
down time of replacing batteries every few months.
♦
The L25 has the radio transmitter inside the A2B switch.
This simplifies installation and allows the unit to be easily moved and re-mounted where you need it - on the main, jib, or rooster sheave.
♦
The L25 is easy to use.
It only takes a minute to properly rig, inspect and perform a system
test … then you are ready to work.
QUICK REFERENCE FOR OPERATOR’S
1. Move the RAT (Radio A2B Transmitter) Switch and line weight as needed. Always keep it rigged on the crane cable you are using.
Never
let the weight swing free!
2. Always INSPECT and perform SYSTEM TESTS as recommended.
3. For maximum switch and battery life, you may wish to disconnect the line weight an secure the chain while traveling. Or - use the hook block to suspend the line weight. It is not necessary to use the RAT switch override flag when traveling.
4. The Switch Override flag. Single Winch Machines (1 RAT switch): insert the flag, remove and stow the line weight.
WARNING!
The system is now in override and will NOT detect or stop
a two-block until the flag is removed and the line weight is rigged.
5. The bypass key, on the display, provides a momentary bypass for rigging and stowing the hook block.
WARNING!
The system will NOT stop a two-block until the bypass switch is
released.
Please read and understand this manual, it should contain all the information you will need.
6.
However, if you have a question or concern, please do not hesitate to contact your crane dealer or call LIFTek directly for assistance at 1-888-LIFTek8.
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
4
RAT SWITCH OPERATION
How to rig the RAT SWITCH
– clip the RAT SWITCH to it’s mounting with the antenna away from the boom and fasten the weight around the crane cable. Clip the OVERRIDE FLAG in the stow position to put the switch into service. Perform SYSTEM TEST.
How to inspect the RAT SWITCH
-Look for and correct any loose fasteners, physical damage or excessive wear. Insure the antenna is not missing, shortened, bent or has exposed metal. Snap test switch: start w/ weight hanging on the switch, lift weight 2 inches and hold, pull chain down and release, switch should “snap” up carrying full weight of the chains.
How to test the RAT SWITCH
Verify that the RAT STATUS LIGHT flashes as follows:
lift weight 2 in.----> two-block condition --> triple flashes (for 30 seconds) lower weight ------> all clear ----------------> single flashes (for 10 seconds)
all clear w/
low battery
double flashes....Replace Battery! See p.11
at all times --------> RAT update signal ----> brief single flash (every11-16 seconds)
How to use the OVERRIDE FLAG
– pull down on the chain and clip the flag onto the shaft as shown above (it should “snap” into place). After inserting the flag you must remove and stow the weight and chain assembly. Do not leave the line weight clamped on the line. Read below.
WARNING!
Flagging the RAT switch will OVERRIDE the A2B system. Two-block conditions
will NOT be alarmed or motion stopped even though the green receiving light is still on.
WARNING!
You must verify that the RAT switch , weight and chain are properly rigged on the
crane line and always perform a SYSTEM TEST before operation.
WARNING!
Do Not use a RAT switch if it is damaged or not operating properly.
Do not alter the system. Use only LIFTek components - weight, chain, spring snaps, etc.
-
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
5
DISPLAY PANEL OPERATION
KEYS
BYPASS
BY-
PASS
key and hold it down. This will CLOSE the motion cut relay and permit crane motion regardless of any two-block alarm. Release the key to exit BYPASS mode.
WARNING!
While in BYPASS, the NOT!---RECEIVING light is ON and the two-block alarms
-
How to BYPASS the MOTION CUT for rigging
are disabled. Maintain visual contact with the hookblock at all times while winching up, booming
down or telescoping out. Do not operate for extended periods in BYPASS mode. The system
cannot work for you in this mode.
–press and release to silence any horn alarm. Horn “chirping” in
How to test the Display
- Press and release the TEST key. All lights should
HORN
OFF
TEST
(LEARN)
HORN OFF
BYPASS or during NOT---RECEIVE alarms cannot be cleared.
-
TEST
come ON, the horn (if present) will beep and go OFF. Verify good horn volume – especially if mounted outside. Empty any collected water; water can reduce horn volume! The motion cut relay will OPEN. If your crane is equipped with motion cut hardware, these motions should be locked out.
- press the BYPASS
Press and release TEST again to exit TEST mode - the display lights and crane motion controls should return to normal.
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
6
TEST
(LEARN)
(LEARN) - How to learn a RAT SWITCH on the Display.
Every RAT switch has its own identification or ID code. The display must “LEARN” this ID code in order to work with the RAT switch. Once you learn the process it can be completed in about 1­2 minutes.
Caution! Put all crane controls in neutral when LEARNING.
Entering LEARN mode will close the motion cut relay.
To start the Learn process, no RAT switches nearby can be currently sending a
1.
two-block alarm (that is… they must
2.
Use
UNLEARN
you are adding a 2
Press and hold the TEST (LEARN) key for about 5 seconds until the horn beeps (if
3.
(below) to clear
nd
switch, skip this step.
all
be triple blinking).
not
current switch ID’s from the display. Note: if
present). Also the two-block light and a green switch light will blink.
The display is asking you to two-block the RAT switch to be “LEARNED” on this light. You may also press LEARN again to toggle from light 1 to 2, or to exit LEARN MODE without making any changes.
Now, carefully two-block the RAT SWITCH you wish the display to learn. Lower,
4.
then lift, the line weight if necessary to send a fresh two block alarm.
When the display shows this two-block alarm, then the new RAT SWITCH has been learned. This normally takes about 5 seconds. The display will then automatically exit Learn Mode.
Repeat the process, starting from step 3., to learn a second switch.
5.
Perform a System Test.
6.
(UNLEARN) - How to unlearn all RAT SWITCHES on the Display.
To clear all learned RAT SWITCHES from the display:
1. Turn display power (crane ignition) OFF.
2. Hold the LEARN key down firmly while turning the crane power back on. Hold
until the display beeps or the NOT light blinks. This takes about 5 or 6 seconds.
Now, the display will open the motion cut relay and blink the yellow NOT! light until a RAT SWITCH is learned. You may use BYPASS to operate the crane.
Both green lights are now available - enter LEARN mode as above to learn on light 1; press again to learn on light 2; press again to exit LEARN mode without learning on either light.
L25 Radio A2B
LIFT
ek Corporation
Copyright © 2000 All rights reserved.
page
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