Yale MPB040E Manual page 57

2200 YRM 1007
• If the AC input fuse is blown, replace and re-
connect the charger to the AC outlet. Check
AC voltage while in operation to confirm the AC
wall circuit is still within the acceptable range,
108 to 126 volts. If the AC wall circuit is still
within the acceptable limits, return the charger
to service. If it is not, DO NOT return the
charger to service until a building circuit with
acceptable output can be found.
If the charger will power up, but does not charge, pro-
ceed with the following:
• Check condition of battery connections and
clean them, if necessary.
• Verify that the batteries are properly connec-
ted. See Diagrams 8000YRM1011, Diagrams
8000YRM1050, Diagrams 8000YRM1381, or
Diagrams 8000YRM1228 for your lift truck.
Identify and replace any batteries with open or
shorted cells.
• Check battery output voltage to verify charge is
actually necessary. Charger may not run if bat-
teries are already sufficiently charged.
• If battery output voltage indicates need for
charging and the unit will not charge, check the
internal 50 amp DC output fuse and replace if
1. INPUT FUSE
•
•
NOTE:
some debris can be expected on the circuit board
next to the fuse. However, care should be taken to re-
move the debris before putting the unit back in serv-
ice. See Figure 25.
•
Figure 23. Input Fuse Location
Battery Charger (Moran
necessary. First remove the four Phillips head
screws on the side of the charger and slide the
cover off to access the fuse. See Figure 24.
If the DC output fuse requires replacement, this
could be an indication of an improperly wired
battery pack. Verify that all battery connections
are correct and remove all debris and metal
fragments from the blown fuse before putting
charger back in service.
If the DC output fuse is good, verify that both
retaining nuts are adequately tightened. Exer-
cise caution not to over tighten the nuts, which
could result in board damage.
If the 50 amp DC output fuse has blown,
Visually inspect for signs of heat damage on
the circuit board and or transformer. If any heat
damage is evident, reassemble and replace
the charger.
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