Sauber 1570-B, Operation And Maintenance Manual

Page: 9 / 21

Relief Setting
The relief setting on the control console is hand-adjustable and provides
the ability to control the maximum amount of pull. Simply rotate the extended knob
on the left side of the panel counter-clockwise to reduce the hydraulic relief setting.
When the capstan begins to slow, rotate the knob clockwise again to regain full
speed. This procedure will set the relief pressure just above the current operating
pressure. Setting the relief slightly above the required amount of pull will protect
your equipment and plant against excessive pulling pressures should an encum-
brance be encountered.
Speed/Pull Power Controls
The electronically controlled two-speed motor can be activated by the
weather-proof switch located at the console. The indicator lamp will light when the
unit is in high speed. The low speed/high torque setting provides twice the pulling
power and will result in a fifty percent hydraulic system pressure drop. To determ-
ine the amount of pull being exerted, read the pressure gauge and refer to the chart
on the control console to determine the applied pull. The following
Pulling Power
Chart relates available pull in Low Speed and High Speed modes to input pressure.
Pulling Power Chart
Pressure
(PSI)
Pull In Low
Speed (LBS)
Pull In High Speed
(LBS)
600 800 400
900 1200 600
1200 1600 800
1500 2000 1000
1800 2400 1200
2100 2800 1400
2250 3000 1500
Pressure
(PSI)
20" Capstan 11" Capstan
Pull In Low
Speed (LBS)
Pull In High
Speed (LBS)
Pull In Low
Speed (LBS)
Pull In High
Speed (LBS)
600 800 400 1300 650
900 1200 600 1900 950
1200 1600 800 2500 1250
1500 2000 1000 3200 1600
1800 2400 1200 3800 1900
2100 2800 1400 4400 2200
2250 3000 1500 5000 2500
Operation & Maintenance Manual
Model 1570-B Puller
09/2010
Page 7