Big Switch™
Pump Control
Operation, Maintenance and Installation Manual
Safety Guidelines
Before proceeding with the installation or operation of the product, make sure to read all instructions thoroughly, as well as
complying with all federal, state and local codes, regulations and practices. The product must be installed by qualified
personnel familiar with all applicable local electrical and mechanical codes. Refer to the National Electric Code (NFPA 70).
Failure to properly install and test this product can result in personal injury or equipment malfunction.
1. DISCONNECT ALL ELECTRICAL SERVICE BEFORE WORKING ON OR HANDLING THE PRODUCT.
2. DO NOT USE WITH FLAMMABLE OR EXPLOSIVE FLUIDS SUCH AS GASOLINE, FUEL OIL, KEROSENE, ETC. DO
NOT USE IN EXPLOSIVE ATMOSPHERES.
3. END USER TO PROVIDE OVERCURRENT PROTECTION RATED AT 240VAC MINIMUM, 15 AMPS MAXIMUM
Electrical: 15 Amp, 120VAC / 230VAC
Cable Type: SJOOW flexible 14 gauge, 2 conductors, water resistant (UL, CSA)
Float Housing: High impact PVC, 3.25” diameter x 4.55” length
Maximum Temperature: 140° F
Switch Configuration: Single Pole, Single Throw
Switching Differential: 90 degrees total
Specifications
CAUTION: USE ONLY AS A GUIDE, MINIMUM TETHER LENGTH IS 4”
Tether Length
(inches) 4” 5” 6” 7” 8” 9” 10” 11” 12” 16” 17” 18”
Pumping Range
(inches) 8” 9” 10” 11” 12” 13” 14” 15” 16” 20” 21” 22”
Actual Ranges May Vary - Reference Only - Testing Must Be Performed for Actual Ranges
NOTE: Check to make sure the right float switch is being used for the application.
Normally Open - Contacts are open while hanging down and will close on a rising liquid level. Typically used for empty tank
applications.
Normally Closed - Contacts are closed while hanging down and will open on a rising liquid level. Typically used for fill tank
applications.
Installation
1. Determine desired cable tether length (Fig. 1).
2. Mount the float cable attachment at desired location (Fig. 2) and adjust
the tether length to achieve the correct pumping range. Test the
system by filling/emptying tank and cycling the system to achieve
actual desired pumping range (figure 1 used only as a guide).
3. The float cable attachment should be tightened to prevent slipping and
maintain accurate pumping range.
4. Electrical outlet must NOT be located in pump chamber. Electrical
outlet voltage, piggyback plug voltage, and pump voltage must match.
Piggyback models: insert Big Switch™ piggyback plug into outlet, then
plug the pump power cable into the piggyback plug of the Big Switch™.
Check the system by allowing to cycle to ensure proper operation.
Mounting
Level
Alderon Industries • PO Box 827 Hawley, MN 56549 • P: 218-483-3034 • F: 218-483-3036 • alderonind.com
P/N: 10384 Rev A
(Fig. 1)
(Fig. 2)
