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PAGE 58 — MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04)
ST-45HRM CE CONCRETE PUMP— MAINTENANCE (PUMP)
EMERGENCY STOP SWITCH FUNCTIONAL TEST
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 FUNCTIONAL TEST
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.