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Manual
Curtis Model 1624
Battery Charger
Curtis Instruments, Inc.
200 Kisco Avenue
Mt. Kisco, NY 10549
www.curtisinstruments.com
Read Instructions Carefully!
Specications are subject to change without notice.
© 2017 Curtis Instruments, Inc. ® Curtis is a registered trademark of Curtis Instruments, Inc.
© The design and appearance of the products depicted herein are the copyright of Curtis Instruments, Inc.
53098 Rev A 1/17
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TABLE OF CONTENTS
1.0 Important Safety and Operating Instructions .......................................1
Safe Operating Instructions ...................................................................2
2.0 Maintenance ...........................................................................................3
3.0 Troubleshooting ...................................................................................... 4
4.0 Charging Proles ....................................................................................5
Table 1 Troubleshooting Chart ......................................................................4
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1.0 IMPORTANT SAFETY AND OPERATING INSTRUCTIONS
This manual contains important safety and operating instructions for standard Curtis chargers. Please
read this information in its entirety before using your Charger.
WARNING
Use charger only with an algorithm selected that is appropriate to the specic battery type. Other
usage may cause personal injury and damage. Lead acid batteries may generate explosive hydrogen
gas during normal operation. Keep sparks, ames, and smoking materials away from batteries.
Provide adequate ventilation during charging. Never charge a frozen battery. Study all battery
manufacturers’ specic precautions (e.g. maximum charge rates and if cell caps should be removed
while charging).
DANGER
Risk of electric shock. Connect charger power cord to an outlet that has been properly installed and
grounded in accordance with all local codes and ordinances. A grounded outlet is required to reduce
risk of electric shock – do not use ground adapters or modify plug. Do not touch uninsulated portions of
output connector or uninsulated battery terminals. Disconnect the AC supply before making or breaking
the connections to the battery. Do not open or disassemble charger. Do not operate this charger if the
AC supply cord is damaged or if the charger has received a sharp blow, been dropped, or is damaged
in any way – refer all repair work to the manufacturer, or qualied personnel. This charger is not intended
for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge on electrical systems and battery charging, unless they have been given
supervision or instruction concerning use of the charger by a person responsible for their safety. Children
should be supervised to ensure that they do not play with the charger.
Figure A
Model 1624
Battery Charger – Front view
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SAFE OPERATING INSTRUCTIONS
• The charger may become hot during charging. Use hand protection to safely handle the charger
during charging.
• Extension cords must be 3-wire cord no longer than 30m (100’) at 10 AWG or 7.5m (25’) at 16
AWG per UL guidelines.
• Only connect one QuiQ Charger to a single 120VAC 15A circuit, or the circuit may become
overloaded.
• The charger will conduct a self-test after being powered on, visible by ashing all of its LEDs in
sequence.
Charger 10-LED Display
Ammeter
• If solid: Displays
scale of output
during bulk phase.
• If ashing: Output
has been reduced
due to high
internal charger
temperature.
Displays charge
proles 1-6 for
11 seconds if
no battery is
connected.
Bulk Charge Indicator
• If solid: Bulk charge phase complete (80% charged); in
absorption phase.
• If ashing: Displays charge prole number if no battery
is connected.
Charge Completion Indicator (Green Light)
• If solid: Charging complete and maintenance mode is active.
• If ashing: Absorption phase complete, in nishing phase.
AC Indicator
• If solid: AC power is present.
• If ashing: Low AC voltage. Check electrical source and
cord length.
Fault Indicator (Red Light)
• Charger error. Refer to troubleshooting information below.
Optional Charger Single-LED Display (internal or external)
LED Color Indication
Green
Amber
Red
If solid: Charging complete and maintenance mode is active.
If ashing:
Short: <80% Charge.
Long: >80% Charge.
When battery is not connected: Charge Prole (Algorithm Number) display.
If ashing: Reduced power mode. Low AC voltage or high internal
charger temperature.
If ashing: Charging error. Reset charger power and refer to
Troubleshooting Instructions below.
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2.0 MAINTENANCE INSTRUCTIONS
1. Do not expose charger to high pressure water spray when cleaning vehicle.
2. The enclosure of the charger meets IP66, making it dust-tight and protected against powerful
water jets. The AC connection is rated to IP20, which is not protected against water. Protect the
AC connection if used in wet or dusty environments.
3. If the detachable input power supply cord set is damaged, replace with a cord that is appropriate
for your region:
- This charger is provided with a cord set for connection to outlets operating at nominal 120
Volts (or 240 Volts as appropriate). If the input plug does not fit the power outlet, contact
Curtis Instruments for the proper cord set terminating in an attachment plug of the proper
configuration for the power outlet.
- ‘North America: UL or CSA listed / approved detachable cord, 3 conductor, 16AWG minimum
and rated SJT; terminated in a grounding type IEC 60320 C14 plug rated 250V, 13A minimum
- For all other regions: Safety approved detachable cord, 3 conductor, 1.5mm² minimum, rated
appropriately for industrial use. The cord set must be terminated on one end with a grounding
type input connector appropriate for use in the country of destination and, on the other end, an
output grounding type IEC 60320 C14 plug.
Figure B
Model 1624
Battery Charger – Rear view
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3.0 TROUBLESHOOTING
If a fault occurs, count the number of red ashes between pauses and refer to the table below.
Table 1 Troubleshooting Chart
Flashes Cause Solution
Battery high voltage
Battery low voltage
Check battery size and condition. This
fault will clear automatically once the
condition has been corrected.
Check battery size and condition. This
fault will clear automatically once the
condition has been corrected.
Charge timeout caused by
battery pack not reaching
required voltage; or charger
output reduced due to high
temperatures.
Battery could not be trickle
charged up to minimum voltage.
Charger shutdown due to high
internal temperature.
Internal charger fault
NOTE: This is a Class A product complying with United States Federal Communications Commission, Code of Federal Regulations; 47CFR part 15. In a
domestic environment this product may cause radio interference, in which case the user may be required to take adequate measures.
WARNING: Charger connectors must be mated to connectors from the same manufacturer. Failure to do so may void warranty and cause a hazardous
condition or equipment damage.
Check connections, that battery
type matches selected charge prole
and operate the charger at a lower
ambient temperature. Reset the
charger by interrupting AC power for
15+ seconds.
Check for shorted or damaged cells.
Reset the charger by interrupting AC
power for 15+ seconds.
Ensure sufcient cooling airow.
Reset the charger by interrupting AC
power for 15+ seconds.
Reset the charger by interrupting AC
power for 15+ seconds. Return to
service depot if fault persists.
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4.0 SELECTING A CHARGE PROFILE
The 1624 Charger can store up to 10 charging proles, also called charge algorithms. This section
shows how to identify the default prole and select a new prole using the “tap method.”
Model 1624 chargers are also reprogrammable by using the dedicated programmer. Pre-2006 Model
1624 chargers with serial number prex DQCP allow pre-loaded proles to be selected but cannot be
reprogrammed with new proles.
Identify the default prole
1. Required supplies include an insulated
wrench, eye protection and gloves.
2. Disconnect the AC power source from the
charger, either from the wall outlet, or from the
IEC320 connector on the charger (Figure 1).
Figure 1: Disconnect AC power.
3. Use your insulated wrench to remove the
positive lead from the positive terminal on the
battery pack (Figure 2).
5. Charger will conduct a self-test of its LED
indicators (Figure 4).
Figure 4: Charger LED indicator self-test.
6a. For 11 seconds after the self-test, the
charger will display its default charge prole.
Proles #1-6 will display on the ammeter, as
well as on the bulk charge indicator (Figure 5).
Figure 2: Remove positive lead from positive
terminal on the battery pack.
4. Reconnect AC power (Figure 3).
Figure 3: Reconnect AC power to the charger.
Figure 5: Charge prole #1 on the ammeter.
6b. Charge proles #7 and above will
display on the bulk charge indicator. If the
charge prole number has two digits, it
will be displayed by one or more ashes, a
pause, then one or more ashes (e.g. #13 =
) (Figure 6).
Figure 6: Bulk charge indicator displays charge
proles 7 and above.
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SELECTING A CHARGE PROFILE CONT'D
Select a new prole
7. Disconnect AC power (Figure 1).
8. Reconnect AC power (Figure 3).
9. Touch the positive lead to the positive terminal for three
seconds (+/- 0.5 seconds), then remove the lead. You will see
the next prole displayed on the charger’s display. Repeat this
step until you reach the desired charge prole (Figure 7).
10. When the charger displays the desired charge prole,
apply the positive lead to the positive battery terminal for
10 seconds. When the charge prole is locked, you will hear
a click from the charger. See Figure 7 for how to apply the
positive lead to the positive terminal.
11. Disconnect AC power, wait for the LED indicator display to
turn off, then reconnect AC power. (Figure 3)
12. Check the LED display to ensure that the desired charge
prole is selected.
13. Disconnect the charger from AC power and wait for the
LED indicator display to turn off. (Figure 1)
14. Reconnect the positive lead to the positive battery
terminal (Figure 8).
Figure 7: Touch the positive lead to the
positive battery terminal for 3 seconds.
Figure 8: Reattach the positive lead to the
positive terminal after disconnecting AC power.
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