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CHAPTER 6
2.
Check the fuses for both negative and positive leads. Use 2 amp fast blow fuses for 12 Vdc
applications and 1 amp fast blow fuses for 24 Vdc applications.
3.
Check that the power supply wires are attached correctly at the 12 or 24 Volt power source and
to the green connector at the back of the meter. Check the battery connections for corrosion.
4.
If a spare meter is available, the quickest and easiest next step is to exchange the meter. If the
new meter works, try the old meter again. If the old meter now works, the problem was likely
the meter’s internal circuit breaker. If both the old meter and the new meter do not work, the
problem is most likely in the power source (battery, meter power cable, or fuses). If the new
meter works, but the old one doesn’t, the old meter is faulty.
If you do not have a spare meter, disconnect then reconnect the green power plug on the back
of the meter. If the meter doesn’t work, then check the power source (battery, meter power
cable, or fuses). If the power sources check out, then the meter is faulty.
Possible Causes For "LO-LO" and "2 X":
1.
VSL line (orange cable) is pinched or shorted.
2.
VSL line incorrectly wired
3.
Damaged VSL plug or receptacle.
What to Do:
1.
Using a voltmeter, check the voltage at the back of the meter when the meter is turned on and
off, the power should not change more than
1/2
Volt. Turn off the meter either by the key or
truck battery switch for a few seconds and then turn on again. If the meter still shows the error,
proceed to step 2.
2.
Check the fuses for both negative and positive leads. Use 2 amp fast blow fuses for 12 Vdc
applications and 1 amp fast blow fuses for 24 Vdc applications. Blown fuses could indicate a
shorted VSL line. Isolate the short by disconnecting sections of the VSL line and checking for
proper meter operation. Another way to check for a shorted line is to disconnect the green and
white from the back of the meter. Measure the resistance between the green and white wire. It
should be greater than 1000 ohms. This method can be used to check different sections of the
VSL line to isolate the short circuit.
3.
Inspect and replace any connection or 2-wire VSL cable that may show signs of being pinched
or crushed as this could cause either open circuits or shorted lines.
4.
To check for an open VSL line, ohm the VSL Vulcoder line by disconnecting and twisting the
green and white wires together at the back of the meter. Disconnect each Vulcoder from the
VSL Vulcoder line. Measure the resistance at these connection points. There should be no
resistance detected when measuring between the green and white wires at the Vulcoder hook
up point.
June 21, 2006
VULCAN ON-BOARD SCALES 1-800-237-0022
Doc. 44-10032-001 Rev. C
©
STRESS-TEK, INC. 2006
