TSE DPT60, Руководство пользователя

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15
Series 90 Functional Description
Motor Features
Motor Loop Flushing Valve and Charge Relief
Valve
All Series 90 motors are designed to accommodate a loop
flushing valve. The loop flushing valve is used in instal-
lations which require additional fluid to be removed from
the main hydraulic circuit because of transmission cool-
ing requirements, or unusual circuits requiring additional
loop flushing to remove excessive contamination in the
high pressure circuit.
A shuttle valve and charge relief valve are installed in the
motor end cap to provide the loop flushing function. The
shuttle valve provides a circuit between the low pressure
side of the closed loop and the charge relief valve in the
motor end cap.
The motor charge relief valve regulates the charge pres-
sure level only when there is a pressure differential in the
main loop. The shuttle valve is spring centered to the
closed position so that no high pressure fluid is lost from
the circuit when reversing pressures.
For charge relief valve adjustment see corresponding
Section.
Variable Motor Displacement Limiters
All Series 90 variable motors include mechanical dis-
placement (stroke) limiters. Both the maximum and mini-
mum displacement of the motor can be limited.
The range of the settings is as follows:
V M 5 5 0 V M 5 7 0
m u m i n i M
t n e m e c a l p s i D
m c 0 4 - 9 1 3
n i 4 . 2 - 2 . 1
3
m c 4 5 - 6 2 3
n i 3 . 3 - 6 . 1
3
m u m i x a M
t n e m e c a l p s i D
% 0 0 1 - 5 6 % 0 0 1 - 5 6
E 1 5 2 2 0 0 T
Loop Flushing Valve (MF)
90000248
90000238E
Motor Charge Relief Valve and Loop Flushing
Shuttle Valve
MV Maximum Displacement Limiter
(Minimum Displacement Limiters on opposite side)
90000352
Charge Relief Valve
Loop Flushing Shuttle Valve
End Cap
Top of Motor