ST-45 PUMP — INITIAL START-UP PROCEDURE
ENGINE SPEED
10.Turn the Operation Pump/Engine switch to the “ENGINE” position (Figure 28).
Figure 28. Operation Pump Engine
Switch
13.Make sure the Operation Pump/Engine switch is in the “ENGINE“ position (Figure 28), and that only the engine is running.
14.Turn the fan switch (Figure 30) to the “ON“ position and listen for fan to start.
Figure 30. Fan On/Off Switch
NOTE | The pump should not be cycling at this |
| time. Only the ENGINE should be |
| running. |
11.While monitoring the tachometer (Figure 25), use the EngineThrottle Control to set the engine speed to 2550 RPM (maximum speed) using steps
12.The Accumulator Pressure Gauge (Figure 29) should read approximately 1750 pounds per square inch (psi).
Figure 29. Accumulator Pressure Gauge
COOLING FAN
This section is intended to make sure the fan is working properly. Under normal conditions the fan should be turned on when the hydraulic oil temperature begins to approach 75 degrees fahrenheit.
15.Turn the fan switch to the “OFF“ position and listen for fan to stop. If machine exceeds 170°F or to cool the machine down, turn the operation switch (Figure 28) back to the “ENGINE“ position. Run engine at high RPM with cooling fan on for 10 to 15 minutes.
PRESSURE TEST
16.The Pressure Test switch (Figure 31) is a
Figure 31. Pressure Test On/Off Switch
HOPPER REMIXER CONTROL
A.Located to the left of the Hydraulic Temperature gauge is the Hopper Remixer Control lever (Figure 32).
B.Turn the Operation Pump/Engine switch to the “ENGINE“ position (only the engine should be running).
CAUTION
If the hydraulic oil temperature exceeds 170 degrees fahrenheit, shut down the pump. DO NOT continue to operate the pump. Failure to shut down the pump will result in severe damage to the pump.
Figure 32. Hopper Remixer Control Lever
PAGE 34 — MAYCO
