INTRODUCTION
EN
Your Little Giant condensate pump is designed as an automatic condensate
removal pump for water dripping off an air conditioner evaporative coil. The
pump is controlled by a float/switch mechanism which turns the pump on when
approximately 2-1/4" of water collects in the tank, and automatically switches off
when the tank drains to approximately 1-1/4".
The Little Giant unit you have purchased is of the highest quality workmanship
and material. It has been engineered to give you long and reliable service.
Little Giant pumps are carefully packaged, inspected and tested to ensure safe
operation and delivery. When you receive your pump, examine it carefully to
determine that there are no broken or damaged parts that may have occurred
during shipment. If damage has occurred, make notation and notify the firm
that you purchased the pump from. They will assist you in replacement or
repair, if required.
READ INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL,
OPERATE OR SERVICE THE LITTLE GIANT PUMP. KNOW THE PUMP
APPLICATION, 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. INSTALLATION AND CONNECTIONS ARE TO BE
MADE BY A QUALIFIED PERSON.
SAFETY GUIDELINES
DO NOT USE TO PUMP FLAMMABLE OR EXPLOSIVE FLUIDS SUCH AS
GASOLINE, FUEL OIL, KEROSENE, ETC. DO NOT USE IN EXPLOSIVE
ATMOSPHERES. PUMP SHOULD BE USED WITH LIQUIDS COMPATIBLE
WITH PUMP COMPONENT MATERIALS.
DO NOT HANDLE PUMP WITH WET HANDS OR WHEN STANDING ON A
WET OR DAMP SURFACE, OR IN WATER.THIS PUMP IS SUPPLIED WITH
A GROUNDING CONDUCTOR AND/OR GROUNDING TYPE ATTACHMENT
PLUG. TO REDUCE THE RISK OF ELECTRICAL SHOCK, BE CERTAIN
THAT IT IS CONNECTED TO A PROPERLY GROUNDED GROUNDING TYPE
RECEPTACLE.
IN ANY INSTALLATIONS WHERE PROPERTY DAMAGE AND/OR PERSONAL
INJURY MIGHT RESULT FROM AN INOPERATIVE OR LEAKING PUMP DUE
TO POWER OUTAGES, DISCHARGE LINE BLOCKAGE, OR ANY OTHER
REASON, A BACKUP SYSTEM(S) AND/OR ALARM SHOULD BE USED.
SUPPORT PUMP AND PIPING WHEN ASSEMBLING AND WHEN INSTALLED.
FAILURE TO DO SO MAY CAUSE PIPING TO BREAK, PUMP TO FAIL, MOTOR
BEARING FAILURES, ETC.
INSTALLATION
1. Before installing pump, allow air conditioner to cycle several times, collect-
ing condensate in a separate container to help flush any residual oils that
may remain in the system.
2. Carefully unpack the pump. Remove the cardboard packing from the motor
cover air slots. Carefully slide the packing away from the pump. This pack-
ing is used to prevent switch movement during shipment (Figure 1).
3. Mounting the pump: the tank has two slots provided to mount the unit. The
slots are located on the ends of the tank (Figure 5). The unit should be
mounted either on the side of the air conditioner unit or nearby wall. Pump
must be level and the inlet must be below the coil drain. Conduit fittings are
not compatible with the plastic pump housing.
4. The pump should not be installed in a manner that will subject it to splash-
ing or spraying.
5. This pump is not intended for use inside air plenums.
ELECTRICAL CONNECTIONS
1. Shut off electrical power at fuse box
before making any connections. All
wiring must comply with local
codes.
2. Line voltage: Connect power cord
to line voltage specified on motor
and nameplate. Power cord must
be connected to a constant source
of power (not a fan or other device
that runs intermittently). If power
cord does not have a plug, wiring
is as follows: green (or green/yel-
low)—ground. Black (or brown)—
line. White (or blue)—neutral.
3. Safety switch: The safety overflow
switch should be connected to a
class II low voltage circuit. To control a thermostatic circuit the COM and NO
connections from the safety switch are to be wired in series with the low volt-
age thermostat circuit to shut down the heating/AC circuit. The COM and NC
switch contacts may be used to actuate a low voltage alarm circuit (connected
in series) if the heating/cooling system can not be disrupted. The safety switch
comes from the factory with leads connected to the COM and NO switch ter-
minals. Typical hook-up of “NC” circuits would be (Figures 2 & 3).
4. If fused plug is used on 230V units, a 1.0 amp fuse is recommended.
PIPING
1. Run flexible tubing or pipe from evaporator drain into one of the three
pump inlets. Be sure inlet piping is sloped downward to allow gravity
flow (Figure 4). Extend the inlet piping into the tank from 1 to 3 inches to
ensure that it will not interfere with proper float operation. Be sure that the
inlet piping is cut at an angle where it enters the tank.
2. The outlet piping should be flexible tubing secured with a hose clamp (not
provided) or pipe (3/8 inch I.D. maximum to prevent excessive flow back
to unit). From condensate unit, extend discharge piping straight up as high
as necessary. Do not extend this line above the head/GPH of the particular
model being installed. From this high point, slope discharge line down
slightly to a point above drain area; then turn down and extend to a point
below or approximately level with the bottom of the condensate unit. This
will give a siphoning effect which will improve efficiency of the condensate
unit and will, in most cases, eliminate the need for a check valve (Figure 5).
If it is not possible to slope discharge line down, make an inverted “U” trap
directly above the pump at the highest point.
SERVICE INSTRUCTIONS
1. Make certain that the unit is disconnected from the power source before
attempting to service or remove any component!
2. Be sure the floats move freely. Clean as necessary (Figure 6).
3. Clean the tank with warm water and mild soap.
4. Check the inlet and outlet piping. Clean as necessary. Be sure there are
no kinks in
the line that
would inhibit
flow.
1
VCMA-10
VCMA-15
VCMA-20
Figure 1
Figure 2
Franklin Electric Co., Inc.
P. O. Box 12010
Oklahoma City, OK 73157-2010
405.947.2511 • Fax: 405.947.8720
www.LittleGiantPump.com
