Columbia ParCar Expediter EX21-24A, Service Manual

Page: 78 / 94

Section 9
–
Battery and Battery Charge
r
with an equipment-grounding AC electric cord, and a
grounding type plug.
2. Connect the cord to an appropriately installed receptacle
grounded in accordance with the National Electric Code
ANSI/NFPA 70, and all local codes and ordinances.
Figure 9-4
3. The Yellow AC power LED (No. 1, Fig. 9-4B) should remain
illuminated while the Charger is plugged into an AC source.
If Yellow LED is not lit, before replacing Charger, recheck
the AC connection and the AC source fuse or breaker. If
this fails to correct the problem, contact your Columbia
Dealer for assistance.
4. Charger will automatically turn on and conduct a short self-
test and battery pack test. All LED’s will flash in sequence
and then a trickle current will be applied to batteries until a
minimum voltage is reached. In Figure 94B No. 3 indicates
the Bar Graph and No. 2 indicates the lowest LED. Three
(3) amperes is displayed as the lowest LED on the Bar
Graph
5. If the batteries meet the minimum voltage requirements of
the Charger, signifying they are serviceable (chargeable),
the
Charger enters the bulk charging (higher
amperageconstant current) stage. The Bar Graph LED’s
indicate the electrical current being delivered to the
batteries as the Charger moves through its automatic
charge profile. The length of charge time at each level will
vary due to battery size and battery charge depletion.
NOTICE: If the batteries are excessively discharged, the
Delta-Q will not be able to charge the complete set of
batteries. The Delta-Q will have the RED FAULT LED (No.
6, Fig. 9-4B) flashing red (see RED LIGHT CHARGER
ERROR CODES). It will then be necessary to follow the
instructions
in EXCESSIVELY DISCHARGED
BATTERIES.
6. When the Yellow LED (No. 4, Fig 9-4B) is lit, the Charger
has completed the bulk stage and the batteries are at
approximately 80% state of charge. The 80% LED remains
on as the last 20% of charge is returned to the batteries in
the second phase (constant voltage phase).
NOTICE: You can terminate charging at this point if
necessary. The vehicle can be used, but completing the
charge cycle is highly recommended.
7. Charge completion is when the 100% Green LED is lit, (No.
5, Fig. 9-
4B). Repeated “Short Charging” leaving the
charge short of 100% will shorten operating cycle distance
and reduced battery life.
8.
A low current “finish-charge” phase returns and maintains
batteries to maximum capacity. The 100% Green LED will
blink until “finish charge” phase is complete.
9. A 100% Green LED continuously lit indicates the batteries
are completely charged. The Charger may now be
unplugged from the AC source. If the batteries will not be
used for a length of time, check monthly for the charge
level. It is also acceptable to leave the Charger plugged in.
The Delta-Q has the capability to test and recharge if
necessary.
10. A fault occurring while charging causes the RED FAULT
LED to flash with a code relaying the error. Some errors
may require repair by a qualified technician and others may
be simply transient and will automatically recover when the
fault condition is eliminated and the Delta-Q cycled by
disconnecting the AC source for a minimum of 11 seconds.
NOTICE: A Yellow (Amber) blinking LED in the upper Bar
Graph (No. 3, Fig. 9-4B) usually indicates the
thermostatic control has limited the Charger output due
to ambient temperature conditions. It is still charging,
but at a reduced rate.
SINGLE LED DISPLAY (Figure 9-4A)
SOLID GREEN
– Charging complete, in maintenance mode
FLASHING GREEN
– Short < 80% charge
Long > 80% charge
GREEN when battery not connected
– Algorithm number
FLASHING YELLOW
– Reduced power mode: low AC voltage
or high internal charger temperature.
FLASHING RED
– Charger error. Reset charger power and see
RED LIGHT CHARGER ERROR CODES.
NOTICE: Do not disassemble the charger. There are no
serviceable parts.
RED LIGHT CHARGER ERROR CODES
A B
LED