TROUBLESHOOTING/ Monitor Unit Pump 2 Flow Rate Adjustment (Only machines equipped with optional parts) When using the attachments, fine adjust flow rate of pump 2 by keys 1 and 2 operation. The signals from the monitoring unit are sent to MC by using CAN. When breaker 1 or 2 is used, MC adjusts flow rate of pump 2 while controlling maximum pump 2 flow rate limit control solenoid valve. When pulverizer 1 or crusher 1 is used, MC adjusts flow rate of pressure oil that flows from pump 2 to pulverizer or crusher while controlling the auxiliary flow rate control sole- noid valve. (Refer to "Control Systems.") key 1 key 2 NOTE:
When the 2-speed selector circuit is OFF, flow rate of pump 2 can be adjusted while controlling the maximum pump 2 flow rate limit control solenoid valve. When the 2-speed selector circuit is ON, flow rate of pressure oil that flows from pump 2 to the attachments can be adjusted while control- ling the auxiliary flow rate control solenoid valve. The table blow is the setting of various factors at the time of shipment from the factory. T1V5-05-01-111 When using Breaker 1 key 1 T1V5-05-01-024 key When using Pulverizer 1 NOTE: The items on monitor unit and HITACHI pattern are same.
T5-2-14 2 Type of Attachments 2-Speed Selector Circuit Valve Selector Circuit Accumulator Circuit Secondary Hydraulic Relief Selector Circuit Pump 2 Flow Rate Control Auxiliary Flow Rate Control Breaker 1 OFF to Hydraulic Oil Tank OFF ON ON OFF Breaker 2 OFF to Hydraulic Oil Tank OFF OFF ON OFF Pulverizer 1 ON to Control Valve OFF OFF OFF ON Crusher 1 ON to Control Valve OFF OFF OFF ON Monitor Unit HITACHI pattern Breaker1 Hydraulic Breaker1 Breaker2 Hydraulic Breaker2 Pulverizer1 Secondary Crusher1 Crusher1 Primary Crusher1