Instruction Manual

Operating the Spreader

Model # SP-7550

SPREADER LOADING

WARNING – Do not overload vehicle. Use chart below to calculate weight of material. Weights of material are an average for dry

materials.

Material Weight Per Cubic Ft.

Rock Salt 80-90 lbs.

Sand/Salt Mix 95-120 lbs.

• Warning – Never leave material in hopper for long periods of time as salt is hygroscopic and will attract atmospheric moisture and harden up.

When spreading sand mix, a 1:1 ratio for Sand/Salt mix is recommended to prevent the material from freezing.

SPREADER OPERATION

• The Dual Variable Speed Controller has dual nger-tip dials for maximum performance, digital system status with warning protection and built-

in Vibrator Switch.

• To start, press power switch on controller and spreader will accelerate to speed set on spinner and auger dials.

• To stop, press power on controller to off position.

• Speed of Auger and Spinner may be adjusted separately to get desired ow and spread distance

• The Vibrator Switch is needed for dense material or to increase the ow to the Auger. This eliminates bridging of material in hopper.

• A Material Bafe has been installed in your spreader to stop ne material from free owing. If using dense or damp material, or if more ow is

desired, remove Material Bafe. However, it is recommended that the Material Bafe remain in place if using bulk salt.

• It is important that the Inverted Vee not be removed except when servicing.

• If there are any problems while operating the spreader, refer to Troubleshooting Guide.

SPREADING TIPS

• Spread ice melters with the storm to prevent unmanageable levels of ice.

• Never exceed 10 m.p.h. when spreading.

• For a wider pass, increase spinner speed.

• For a heavier pass, drive slower or increase auger speed.

• Never operate spreader near pedestrians.

• Calculate spread pattern when near vegetation.

WARNING PROTECTION

• If audible beeping occurs, read display to identify problem. If display reads “OL” (overload) or “OH” (overheat), shut controller down and

carefully clear jammed auger. If display reads “E1“ this means there is a dead short in system. Do not use until problem is corrected. If display

reads “E0” this means that the motor is not getting any power. Check all connections. If display reads “LB” the vehicle battery is extremely

low (possibly caused by a poor or corroded connection) and could damage the system.

• If there are any problems while operating the spreader, refer to Troubleshooting Guide.