Owner’s Manual
Front Grill Brush - SF50
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SONNY’S The CarWash Factory
®
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Manual-O, Front Grill Brush 16v1
– Rev 2021-A
Adjustments and Testing
Adjust the Cleaning Pressure of the Washer
To adjust the pressure applied to the vehicle the mounting position and the spring position of the
shocks can be changed. Cloth penetration should be about three to four inches.
Adjust for smooth retracts operation
To adjust the retract operation the air pressure regulator should be adjusted for approximately
30PSI in the retract position and in the range of 0-15PSI in the extended position.
Speed and Torque Adjustment (where applicable)
1. Hydraulic
a. The speed can be adjusted on the flow control for the power pack.
b. To increase the speed move the handle on the flow control closer to the number 10.
c. To decrease the speed move the handle on the flow control closer to the number 1.
d. The torque must be set prior to operation and should be set between 600 and 900
PSI. For information on how to set the torque please refer to the Hydraulic Power
Pack Manual.
2. Electric
a. The speed can be adjusted on the Variable Frequency Drive (VFD).
b. To increase the speed adjust the Hertz on the VFD to a higher number.
c. To decrease the speed adjust the Hertz on the VFD to a lower number.
d. The Overload on the Motor Starter protector(s) must be set at the lowest level to allow
for operation. Adjust the amps in accordance with motor(s) name plate.