“3084 Speed Level™ Sigma Lift” Service and Parts Manual
October 2009
Page 1-26
P
L A T F O R M
L
I F T
C
I R C U I T
P
LATFORM
L
IFT
C
IRCUIT
NOTE:
Refer to
Hydraulic Manifold
and
Relief Pressure Adjustment Procedure
.
Refer to
Section 3
for Remove and Replace instructions.
• On model 3084RT, the lift system uses the hydraulic pump to obtain proportional lifting func-
tion controlled by the lift valve and proportional valve.
• On model 3084ES, the lift system uses the electric motor to obtain proportional lifting func-
tion controlled by the lift valve.
• Lowering is single speed. When lowering, the holding valve on the lift cylinder opens allowing
gravity to lower the platform. Lowering speed is regulated by a fixed orifice located on the lift
cylinder.
•
ANSI:
Platform capacity is limited by a hydraulic relief valve in the lift circuit. (Refer to
Machine Specifications or the Hydraulic Schematic for proper setting).
•
CE:
Lift capacity is controlled by the Overload System.
Figure 1-15:
Platform Lift, Main Hydraulic Manifold
ART_2552
LEFT SIDE VIEW
FRONT VIEW
Lift
RED/BLU
Lift Relief Valve
Lift Port
(3084RT only -
Orifice Under Fitting)
3 Way Solenoid
Operated Hydraulic
Spool Valve
Содержание Speed Level 2684 ES
Страница 52: ...3084 Speed Level Sigma Lift Service and Parts Manual October 2009 Page 1 32 GENERATOR OPTION 3084RT NOTES...
Страница 104: ...3084 Speed Level Sigma Lift Service and Parts Manual November 2009 Page 3 20 ENGINE MAINTENANCE NOTES...
Страница 142: ...3084 Speed Level Sigma Lift Service and Parts Manual November 2009 Page 4a 38 TROUBLESHOOTING 3084RT MODELS NOTES...
