Sens Q012-012, Installation & Operation Manual

Page: 28 / 44

SENS IQ Technical Manual
28
Service Hotline: 1.800.742.2326
1.303.678.7500
Table 9: Non-temperature compensated factory charger output DC voltage and alarm
threshold settings for NiCd batteries
Setting 9
Cells 10
Cells 19
Cells 20
Cells 37
Cells 38
Cells 92
Cells 93
Cells 184
Cells 186
Cells
Float Voltage
12.87 14.30 27.16 28.60 52.90 54.30 131.5 132.9 263.0 265.8
Equalize
Voltage
14.40 16.00 30.40 32.00 59.20 60.80 147.2 148.8 294.4 297.6
Battery End-
of-Discharge
Threshold
9.45 10.50 19.94 21.00 38.85 39.90 96.6 97.6 193.2 195.2
Low DC
Alarm
Threshold
9.90 11.00 20.90 22.00 40.70 41.80 101.2 102.3 202.4 204.6
High DC
Alarm
Threshold
14.85 16.50 31.34 33.00 61.05 62.70 151.8 153.4 303.6 306.8
Over Voltage
Shutdown
Threshold
15.12 16.80 31.92 33.60 62.15 63.80 154.5 156.2 309.0 312.4
Volts
per
Cell
1.43
1.60
1.05
1.10
1.65
1.68
12 MAINTENANCE AND TROUBLESHOOTING
Recommended Maintenance:
A. Annually: Check all field wiring connections for electrical and mechanical integrity, verifying no corrosion or
loose hardware is present
B. Annually: Verify that convection cooling vents are not blocked or clogged
C. Every 10 years: If the charger is typically operated at ambient temperatures above 30°C/86°F, replace the filter
capacitors. Regardless of ambient temperatures, replace the filter capacitors if high charger output ripple is not
desired.
If you suspect there is a problem with the charger, the following should be done immediately:
A. Disconnect AC mains supply.
B. Open both AC input and DC output circuit breakers.
C. Open the front door of the charger and inspect the interior for loose objects.
D. Examine connector locations on printed circuit board for loose or un-plugged connectors.
E. Reconnect AC mains supply.
F. Check AC input voltage on line side of input breaker with an external voltmeter and verify it is in the proper
range.
G. Check wiring to DC output breaker and verify proper polarity of output connections. Also verify small terminals
connected to load side of DC output breaker are still connected.
If none of these inspections yield a solution, consult
FIGS 12-19
for additional troubleshooting tips.
WARNING:
CHARGER CONTROL CIRCUITS ARE AT BATTERY
POTENTIAL AND CAN BE HAZARDOUS IF TOUCHED.
ONLY INSULATED TOOLS SHOULD BE USED WHILE
WORKING ON A CHARGER THAT IS POWERED UP. AVOID
TOUCHING ANY CIRCUIT OR ANY BARE METAL.