Never use the tool at 100% at its maximum or minimum.
For Yokota impulse wrenches we advise to do a preventive oil change maintenance after 250.000 cycles. 1 cycle is 0.5 seconds impulsing (hard joint). Oil change is including replacing the
service kit.
Maintenance:
Check the tool regularly for loose bolts/screws or parts.
Measure the rpm of the tool regularly, in case of higher or lower rpm than indicated in the technical specifications: Stop using the tool immediate and have it repaired.
In case of power loss: Have the tool repaired.
Only trained and qualified engineers are allowed to adjust or repair the tool.
In case of disposal of the tool, follow local regulations, so as much as possible can be recycled. Do not throw it in the normal waste bin.
The tool should be maintained regularly to minimize the noise emission and occurring vibration.
ERROR Mode: Display by LED
LED lighting pattern at Error or alarm.
Condition
LED Lightning/Blinking pattern
Communication Error
2 times blinking
Inspection / repair of the tool is necessary.
Please send the tool to our company or our certified service shop for repair.
Motor lock error
5 times blinking
Wire breakage in motor temperature
sensor
6 times blinking
Wire breakage in driver temperature sensor 7 times blinking
Over-voltage error
8 times blinking
Over-current error
9 times blinking
Speed setting error
10 times blinking
The speed setting switch is set to the intermediate position of the adjacent setting.
Please remove the battery pack and set the speet setting switch setting to the correct
position.
Low voltage error *1
11 times blinking
Please replace the battery pack
Battery pack remaining amount alarm *2*3*
Continuous blinking
Please replace the battery pack
Overheat alarm *3
Lighting
Please wait until release (LED lamp lights off).
*1: Low voltage error may operate when using a battery pack whose performance has deteriorated due to deterioration, low temperature, etc. Normally, overdischarge
protection in the battery pack operates first and the low voltage error will not operate.
*2 : Even if battery pack remaining amount alarm occurs, if you continue to use without replacing the battery pack, overdischarge protection in the battery pack is activated
and the power supply is shut off.
*3 : Even if the tool stops due to overheating while the battery pack remaining amount alarm is generated, LED keeps high speed blinking and will not be lit.
< The tool does not operate until the overheat status is released.>
Motor Overheat
The motor of the tool might overheat at intensive use. This overheat is depending on the tools adjustment (speed and relief valve) and the application, hard joint or soft joint.
At maximum torque output on hard joint application (0.5 seconds impulsing) the models can make at least the number of cycles as per below:
YZ-N600: 10 cycles per minute
YZ-N800: 8 cycles per minute
YZ-N900: 6 cycles per minute
YZ-N950: 5 cycles per minute
Intended use:
The user or the user's employer shall assess the specific use that can be present as a result of each use.
Never use the tool otherwise than the tool is designed for and as explained in this manual.
Damages as a consequence of not following this manual, or caused by incorrect use or incorrect repairs, will never be covered by our warranty and we will have no responsibility for it. We
reserve the right for technical improvements, without prior notification.
