La Marche TPS, Руководство пользователя

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MODEL TPS - INSTRUCTIONS AND TROUBLESHOOTING INFORMATION
17 OF 20
CPN 40615
12.3.3 Charger operates but output voltage/current is low.
Possible Cause:
1. Float/Equalize voltage potentiometers not set correctly (see float/equalize
adjustment procedure for proper voltage setting).
2. Check power diodes or diode modules and triac (see diode and triac troubleshooting
procedure).
3. Regulator assembly or “informer” is defective. (Replace as required)
4. Defective d.c. voltmeter/ampmeter.
5. Unit in current limit.
6. Resonating capacitor open.
7. Defective shunt.
12.3.4 Charger operates but output voltage is high.
Possible Cause:
1. Float/Equalize voltage pots not set correctly (see float/equalize adjustment
procedure for proper voltage setting).
2. Circuit regulator assembly S2A-188 is defective.
3. Open gate on triac TR-1.
12.3.5 Ground and short circuit test.
A simple ohmmeter check can be performed to check the unit for a short to ground, primary to
secondary breakdown, a.c.-d.c. short, or d.c. ground. Before installation of a new unit, the above
checks should be made before installing. If a short of this type is suspected on a unit in service,
check as follows:
1. Disconnect a.c. input power to the unit. Disconnect the d.c. battery and loads from
the rectifier.
2. Set ohmmeter scale on ohms scale RX100.
3. Measure from one terminal of the input to one terminal of the output. Meter should
not indicate. If the meter reads full scale deflection, this indicates an ac-dc short.
During shipping, an a.c. wire may rub against the d.c. lugs, terminals, etc. and
cause a short. These problems may be eliminated by being very careful in
inspecting the wiring to make certain the a.c. wires are not touching the d.c.
wiring.