SECTION 10
RECIRCULATION SYSTEM
Page 10-4
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Operating Temperature Adjustment
The operating temperature is adjusted by turning the water modulating valve
(2) adjusting knob with a flat blade screwdriver. Clockwise increases the oil
temperature.
The water modulating valve regulates the cooling flow that enters at port “D” to
the heat exchanger (3) and then discharges through port “C” to the drain.
The operating oil temperature is factory set at 46°C (115°F) based on the
temperature and flow of cooling water at the factory. Field adjustment may be
necessary.
10.3 System Pressure Protection
System pressurization over 4.2 bar (60 psi) is prevented by relief valve located
in filter housing (5).
Table 10-2 Re circulating Oil Temperature and Pressure Controls
Adjustment Setting
Control Valve
Increase Decrease Maximum Minimum
Oil
Temperature
2 Clockwise
Counter-
clockwise
52
o
C
(125
0
F)
41
o
C
(110
0
F)
Oil
Pressure
--
Fixed (Built into
Hydraulic filter
housing)
4.2 bar
(60 psi)
3.8 bar
(55 psi)
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