Little Giant ACS-2 Manual

AUXILIARY CONDENSATE
SWITCH
MODEL NO. CATALOG NO. VOLTS AMPS WIRE SIZE WIRE LENGTH
ACS-2 599122 48 V AC/DC 5 A 18 AWG 18"
ACS-2 599123 48 V AC/DC 5 A 18 AWG 72"
ACS-3 599124 125/250 V AC 11 A 18 AWG 72"
•INSTALLATION •MAINTENANCE •OPERATION
INTRODUCTION
The Little Giant Model Series ACS Auxiliary Condensate Switch is designed to be installed in the
condensate drain pan of an air conditioning or refrigeration unit. The ACS when properly installed, will
turn off the air conditioning or refrigeration unit if the condensate level in the condensate drain pan
approaches overflow. The ACS is a SPDT switch in an ABS housing and is supplied with 18 AWG
leads, a mounting screw, a sealing washer and a nut. The ACS may be wired in a "normally open" or
"normally closed" position.
The Little Giant switches are carefully packaged, inspected and tested to insure safe operation and
delivery. When you receive your switch, examine it carefully to determine that there are no parts
missing or which may have been damaged or broken during shipment. If damage has occurred, make
notation and notify and/or return to the firm from which you purchased the switch and they will assist
you in the replacement or repair.
READ INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE OR SERVICE
THE LITTLE GIANT ACS. KNOW THE SWITCH APPLICATIONS, LIMITATIONS, AND POTENTIAL
HAZARDS. PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION.
FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND/OR
PROPERTY DAMAGE! RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.
Figure 1
Your Little Giant product is guaranteed to be in perfect condition when it leaves our Factory. It is
warranted against defective materials and workmanship for a period of 12 months (90 day warranty
on Models 1-AA-OM, GKPK-SC, PP-1, PPS-1, PP-12, PPS-12, PP-230 and Cooler King) from date of
purchase by the user. No warranty on brush wear on Model 35-OM and impeller or cam in Models PP-
1, PP-12, PPS-12 and PP-230. Any product that should fail for either of the above two reasons and is
still within the warranty period, will be repaired or replaced if returned prepaid to our Factory. All
defective products returned under warranty will be fully inspected to determine “CAUSE OF FAILURE”
before any warranty is approved. Little Giant will honor the warranty within the warranty time period
specified on satisfactory written proof of purchase.
DISCLAIMER: Any oral statements about the product made by the seller, the manufacturer, the
representatives or any other parties, do not constitute warranties, shall not be relied upon by the user,
and are not part of the contract for sale. Seller’s and manufacturer’s only obligation, and buyer’s only
remedy, shall be the replacement and/or repair by the manufacturer of the product as described
above. Neither seller nor the manufacturer shall be liable for any injury, loss or damage, direct,
incidental or consequential (including, but not limited to, incidental or consequential damages for lost
profits, lost sales, injury to person or property, or any other incidental or consequential loss), arising
out of the use or the inability to use the product, and the user agrees that no other remedy shall be
available to it. Before using, the user shall determine the suitability of the product for his intended use,
and user assumes all risk and liability whatsoever in connection therewith. THE WARRANTY AND
REMEDY DESCRIBED IN THIS LIMITED WARRANTY IS AN EXCLUSIVE WARRANTY AND REMEDY
AND IS IN LIEU OF ANY OTHER WARRANTY OR REMEDY, EXPRESSED OR IMPLIED, WHICH
OTHER WARRANTIES AND REMEDIES ARE HEREBY EXPRESSLY EXCLUDED, INCLUDING, BUT
NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. Some States do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply to you. This warranty
gives you specific legal rights, and you may also have other rights which vary from state to state.
Warranty will be VOID if any of the following conditions are found:
1. Product connected to voltage other than indicated on name plate.
2. Product abuse by customer.
3. Product used in a corrosive environment.
4. Product was used other than intended as described in the introduction of this
Installation Guide.
LITTLE GIANT WARRANTY STATEMENT
LIMITED
WARRANTY
LIMITED
WARRANTY
LITTLE GIANT PUMP COMPANY
301 N. MacArthur • Oklahoma City, OK 73127
Phone [phone] • Fax [phone]
File this for safekeeping. It may be valuable to you for service under the term of the warranty.
Model # ____________________________________ Date of Purchase __________________________________________
Catalog # ___________________________________ Serial # __________________________________________________
Name of Dealer ________________________________________________________________________________________
Copyright 2006 Little Giant Pump Company Form 14940881 05/06

SAFETY GUIDELINES
1. DO NOT USE WITH FLAMMABLE OR EXPLOSIVE FLUIDS SUCH AS GASOLINE, FUEL OIL,
KEROSENE, ETC. DO NOT USE IN EXPLOSIVE ATMOSPHERES. SWITCH SHOULD ONLY BE
USED WITH WATER. (NOTE: THIS IS NOT A SUBMERSIBLE SWITCH).
2. DO NOT HANDLE SWITCH WITH WET HANDS OR WHEN STANDING ON A WET OR DAMP
SURFACE, OR IN WATER.
3. DISCONNECT ALL ELECTRICAL SERVICE TO THE SWITCH BEFORE WORKING ON OR
HANDLING THE UNIT.
4. DO NOT CONNECT TO VOLTAGE AND/OR AMPERAGE ABOVE THAT INDICATED ON
NAMEPLATE.
5. DO NOT OPERATE UNLESS COMPLETELY ASSEMBLED.
6. IN ANY INSTALLATION WHERE PROPERTY DAMAGE AND/OR PERSONAL INJURY MIGHT
RESULT FROM AN INOPERATIVE SWITCH DUE TO POWER OUTAGES, OR ANY OTHER
REASON, A BACKUP SYSTEM(S) AND/OR ALARM SHOULD BE USED.
INSTALLATION
1. Refer to the air conditioning or refrigeration unit's Operating Manual during installation of the
ACS switch.
2. Disconnect power to the air conditioning or refrigeration unit, both main power and the low
voltage thermostat circuit.
3. All the switches are factory wired "normally closed". This configuration will open (break) an
electrical circuit when switch is activated by high water level.
4. If "normally open" configuration is required, remove the switch cover by sliding it up and off the
switch housing. Carefully, remove the switch and change the lower lead wire from terminal
marked "NC" to terminal marked "NO". Carefully, replace the switch and reinstall the switch cover.
Test the operation of the switch to confirm "normally open" operation.
5. Plug the drain hole of the condensate drain pan. Temporarily position the ACS in the desired
location without the screw, nut or sealing washer so that the switch housing and switch cover are
against the drain pan wall (refer to Figure 2). Start filling the drain pan with water until the float lifts
up and activates the switch. Make sure that the water level does not approach or overflow the
drain pan. There will need to be a sufficient gap (usually ¾”) between the highest water level
required to activate the switch and the top of the drain pan (see Figure 4). Confirm the float can
travel its full range with no obstructions.
6. Before removing the pre-assembled ACS, mark a position for the mounting hardware. Unplug the
drain hole of the condensate drain pan and allow the water to drain out completely. Drill a 9/32”
diameter hole for the mounting hardware to pass thru the drain pan. The hole must be drilled
above the highest water level obtained during testing in step 5, and should line up with the slot on
the switch cover. An appropriate sealant may be used in addition to the supplied sealing washer.
7. Mount the ACS with the sealing washer located between the drain pan wall and the switch cover
as shown in Figure 2.
8. Connect the ACS leads in series with the low voltage thermostat circuit as specified in the unit's
Operating Manual. Restore power to the air conditing or refrigeration unit. Test the operation of the
ACS by gently lifting the float until the switch is activated. Air conditioning or refrigeration unit
should turn off.
9. Place the "NOTICE" label included with the ACS on the outside of the access panel in a visible
location.
Figure 2 Figure 3
Figure 4
TOP OF DRAIN PAN WALL
ACTIVATION LEVEL
MEASURED FROM TOP
OF DRAIN PAN
0.75"
ACTIVATION LEVEL
DRAIN PAN
WATER LEVEL
DRAIN PAN
BOTTOM
MAKE SURE THE FLOAT SWITCH
ACTIVATES BY THE RISING WATER
AT A LEVEL THAT IS LOWER THAN
THE MOUNTING SCREW HOLE
LOCATION.
MAXIMUM
DRAIN PAN
WATER LEVEL
CENTER LINE OF
9/32" MOUNTING
HOLE THRU PAN
TYPICAL INSTALLATION