User guide

OPERATING THE AT30
42
SAMPLE PREVENTIVE MAINTENANCE PROCEDURE
AT30 BATTERY CHARGER
Suggested frequency: every 6 months
Maintenance date Performed by
Step
(standard features)
Instructions Results
Clean battery
charger
• All vents clean and open.
• Remove dust and debris from inside of
unit.
o OK
o OK
Check all
electrical
connections
and wiring
• TB1 connections all tight.
• Internal wiring connections tight, slip-on
connectors fully seated. Wire and lug
insulation in good condition.
• Terminations at battery or bus are tight
and corrosion free.
o OK
o OK
o OK
Check ac input
voltage
• Measure between TB1-L1, TB1-L2 &
TB1-L3 using an ac voltmeter. Value
must be within +10% and -12% of
nominal voltage.
Input Vac
Check dc
output voltage
• Measure at TB1 (+) and TB1(-) using a dc
voltmeter. Value should agree with the
front panel voltmeter within +/-0.25%,
and must be correct values for your
battery. If the AT30 is using a
temperature compensation probe, see the
graph on page 23 to determine correct
battery voltage. You need to know the
battery temperature for this step.
Float Vdc
Equalize Vdc
Check ripple
voltage
• Measure at battery terminals using an ac
voltmeter set to the milliVolts scale.
Check against specification in Appendix
A on page 64.
Ripple mVac
Test font panel
indicators
• Press LAMP TEST key on front panel.
o OK
Test common
alarm relay
• Press LAMP TEST key and hold for 4
seconds. Common alarm relay will
transfer.
o OK