Multiquip ST-45HRM CE ST-45HRMCE CONCRETE PUMP— MAINTENANCE PUMP, Proximity Switch Functionaltest

ST-45HRM CE CONCRETE PUMP— MAINTENANCE (PUMP)

EMERGENCY STOP SWITCH FUNCTIONALTEST

There are 2 emergency stop switches on the ST-45 concrete pump. Follow the procedure below to test the switches to make sure that they are both working correctly.

1.Start the pump as outlined in the start-up procedure.

2.Let the engine run for a few minutes.

3.While the engine is running, press the RED emergency stop pushbutton switch on the control box.

4.Verify that the engine has STOPPED. If the engine has stopped it can be determined that the emergency stop circuit is functioning correctly.

5.If the engine continues to run after the emergency stop switch has been activated, turn the ignition switch key to the OFF position and correct the problem using the wiring diagrams provided in the manual.

6.Pull and turn clockwise the emergency stop switch on the control box.This will allow the engine to be started again.

7.Repeat steps 1 through 5 for the RED emergency stop switch on the other side of the pump, located near the heat exchanger.

PROXIMITY SWITCH FUNCTIONALTEST

There is one proximity switch located near the hopper grate.The purpose of this switch is to stop the engine in the event the grate is lifted during operation of the pump.

Follow the procedure below to test the proximity switch to make sure it is working correctly.

1.Remove the two U-clamps that secure the hopper grate to the hopper.This will allow the grate to be lifted.

1.Start the pump as outlined in the start-up procedure.

2.Let the engine run for a few minutes.

3.While the engine is running, lift the splash plate, then the hopper GRATE.

4.Verify that the engine has STOPPED. If the engine has stopped it can be determined that the grate engine stop circuit (proximity switch) is functioning correctly.

5.If the engine continues to run after the grate has been lifted , turn the ignition switch key to the OFF position and correct the problem using the wiring diagrams provided in the manual.

6.Re-install the two U-clamps that secure the hopper grate to the hopper.

EXTENDED STORAGE INSTRUCTIONS

The following preventative maintenance is recommended for extended periods of storage.

1.Check brake system for proper fluid level in master cylinder and bleed all lines.

2.Lubricate all links and pivots to prevent any rusting.

3.Remove wheel and drum assemblies and spray a good anti- corrosion compound (CRC formula 5-56) under rubber boot on forward end of brake wheel cylinder. Avoid spraying drum and brake lining.

4.Grease all bearings and reinstall wheel and drum assemblies.

5.Make sure breakaway cable is fully released.

6.After extended storage, refer to the Maintenance Steps listed above to insure that the trailer is ready for towing.

PAGE 58 — MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04)