Cincinnati 400FM - Checking and Setting Hydraulic Pressures

CHECKING & SETTING HYDRAULIC
PRESSURES
The hydraulic system is equipped with male
quick-disconnect fittings at the most frequently
checked pressure test ports. Identification of the
hydraulic system components is shown on Figure
9-5A and 9-5B, 9-6A and 9-6B and 9-7.
COUNTERBALANCE PRESSURE
Two test ports (#3) are provided in the circuit for
checking counterbalance pressure. See Figure 9-7.
No dies should be installed in the machine during
this check.
1. Set the machine controls:
OPERATOR STATION RIGHT ON
FOOTSWITCH OFF
MODE SELECT SET-UP
OPERATOR CONTROLS Selector ON
SUPERVISOR Selector ON
2. Start machine by turning main disconnect ON
and pressing MAIN DRIVE “START” button.
CAUTION
All dies must be removed from the press brake.
9-4
9 5
1 2 3
4
678
1. HIGH PRESSURE FILTER
2. TEST PORT #5
3. MOTOR / PUMP
4. MAIN MANIFOLD
#1 SOLENOID - DOWN VALVE
#2 SOLENOID - UP VALVE
#5 SOLENOID - PILOT VALVE
#6 SOLENOID - SAFETY DUMP VALVE
MAIN RELIEF VALVE
MANUAL MANIFOLD BLEED VALVE
5. TEST PORT #4
6. FLOW DIVIDER MANIFOLD
#7 SOLENOID - LEVELING VALVE
#8 SOLENOID - LEVELING VALVE
#9 SOLENOID - DECOMPRESSION VALVE
FLOW DIVIDER
PRESSURE TRANSDUCER
7. LOCATION FOR OPTIONAL OIL HEATER
8. AIR BREATHER / FILTER
9. AIR-COOLED HEAT EXCHANGER
FIGURE 9-6A – Hydraulic reservoir components (For 400 - 750 FM Standard)