Nederman RBU 1300 Instruction Manual

Also see for RBU 1300: User manual

Nederman RBU 1300 Instruction Manual Manual pdf 21 page image

RBU21EN– If the pump and motor is easy to rotate the pump does not require internal cleaning.NOTE! Never dismantle the pump. Special equipment and knowledge are absolutely necessaryfor re-assembling the pump. Assembling the pump without this equipment results in severedamage to the pump at next start up.9.6 Discharge silencerCheck the large silencer underneath the pump and motor for cracks every 500 hours of operation.Replace the silencer if any cracks are found.9.7 Thermal fuseNever run the unit without a functioning thermal fuse installed. Contact your local Nedermanrepresentative in order to eradicate the cause and take necessary action if the thermal fuse trips.The fuse must only be replaced when the cause for overheating has been found.9.8 Inlet safety gratingThe safety grating in the inlet silencer may clog if the dust collection is poor, or the vacuum unitis located in a very dusty area. Perform the following inlet safety grating inspection every 500hours of operation:1. Turn off the unit2. Remove the lid3. Inspect the safety grating for clog, see Figure 1 item 17.4. Refit the lid.9.9 Motor bearingsThe recommended intervals for replacing permanent bearings or re-greasing the grease nipplecan be found on the motor data label or motor manual.The operating time before service depends on size, environmental and operating conditions. Asfollowing values are guidelines at normal operation:• Replace permanent bearings before 15,000 hours of operation.• Re-grease the bearings at least every 4,000 hours of operation.9.10 Start-up and vacuum limiting valveFigure 1 item 14 shows the vacuum limiting rubber coated valve disc. Only replace the valve discif damaged. The circular ‘ridge’ must face the compressed air cylinder.Perform the following start-up and vacuum limiting valve inspection every 500 hours ofoperation:1. Start the unit.2. Place your hand on the motor cooling air outlet, Figure 3 item 16.3. The valve works correctly when:– Air is sucked into the motor cooling air outlet during Y mode.– Hot air is blown out from motor cooling air outlet during D mode.