VALLEY FORGE & BOLT MANUFACTURING COMPANY
PHONE: (602) 269 - 5748
4410 W. Jefferson St. • Phoenix, AZ 85043 • USA
WEB: www.vfbolts.com
SPC4™ SYSTEM • MODEL 406A • USER’S MANUAL
Rev. 1.0
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[3] Verify the 406A unit is reading 100% “100” (within ±5%).
1.
Attach the 406A unit to the supplied calibration gage at the end marked “100%”.
2.
Verify that LCD is reading “100” (within ±5%).
Figure 17: LCD 100%
3.
If the LCD is not reading “100” then an adjustment must be made by accessing the
battery compartment.
4.
First, remove the protective cover.
5.
Adjust the “GAIN” dial until the LCD reads “100”.
6.
Attach and remove the calibration gage several times to ensure the integrity of the
“100” reading which verifies that the 100% measurement has been calibrated correctly.
[4]
It may be necessary to perform the calibration check multiple times.
NOTE:
Only adjust the
“OFFSET”
dial for 0% and the
“GAIN”
dial for 100%.
2.5.0
Low Battery Indication
If the battery supply voltage drops below approximately 3.1V while the 406A unit is on, the LCD
will display low battery indication in the LCD as shown in
Figure 18 - Low Battery Indication
. The
operation of the unit is not affected until the battery supply voltage reaches approximately 2.5V,
but it is recommended to stop operation of the system and change the batteries at 3.1V. If the
supply voltage drops to less than 1.8V, the unit will not turn back on.
Figure 18 - Low Battery Indication
Summary of Contents for SPC4 406A
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