Motrec T-448HD, Руководство оператора и по техническому обслуживанию

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Maintenance
- 18 -
BATTERY CHARGER
! WARNING !
Always unplug the AC and DC electrical cords before attempting any repairs to the charger.
CHARGER DOES NOT TURN ON:
−
Dc cord of portable chargers must be disconnected from batteries after every charge to restart;
−
Check dc fuse links;
−
Check battery voltage at the battery connector;
−
Check ac outlet and cordset;
−
Replace electronic control ;
RELAY CLOSES AND TRANSFORMER HUMS BUT AMMETER DOES NOT REGISTER:
−
Check dc fuse links;
−
Check the continuity of the dc output cord, ammeter, diodes and all connections in the dc
circuit;
−
Check diodes;
−
Check capacitor(rapidely increasing resistance);
SINGLE CHARGER FUSE BLOWS:
−
Disconnect and check diodes;
BOTH FUSE LINKS BLOW:
−
Check the battery pack and battery connector polarity;
−
Disconnect and check diodes.
CHARGER OUTPUT IS LOW:
−
Disconnect and check diodes;
−
Can be caused by a transformer failure.
AMMETER READS 30 AMPS FOR MORE THAN 30 MINUTES:
−
Check the battery pack;
CHARGER DOES NOT TURN OFF:
−
Check specific gravity in each battery cell;
−
As much as 16 hours may be required to properly charge heavely discharged new or cold
batteries;
−
Replace electronic control.
AC LINE FUSE OR CIRCUIT BREAKER BLOWS:
−
Check ac cordset;
−
Check ac line fuse rating;
−
Replace electronic control;
−
Can be caused by a transformer failure.