Pump Repairs Perth – Technical Data
Before making any activities ensure that the machine has been locked-out and installs precautionary warning sign or tag-out device to energy-isolating device of a machine or equipment on which preventive maintenance is being performed. Notify affected employees and machine operators that a lock-out or tag-out system is going to be utilized and the reason, therefore.
- Pulling out the Motor
Note: Before making any attempt, ensure that Lock-Out/Tag-Out system has been applied; isolating circuit breakers and magnetic contactors at panel board.
- Remove coupling cover, if required.
- Loosen coupling nut setscrews
- Remove all fixing bolts on the base plate that holds the motor.
- Pull-out the motor straightly aligned away from the pump.
- Pulling out the Pump
Note: Before making any attempt, ensure that Lock-Out/Tag-Out system has been applied; isolating valves and gate valves must be securely shut-off or closed.
- Remove all the bolts that hold the pump on the base plate.
- Loosen and remove all the bolts on suction and discharge flanges.
- Pull out the pump assembly.
- Disassembling the Pump
- a. Loosen and remove all the bolts from volute, then pull out the volute cover.
- Remove the impeller lock-nut.
- Pull out the impeller using puller if necessary.
- Remove flange coupling, use puller if necessary.
- Remove mechanical seal. Be sure to measure first the correct distance of mechanical seal from the other end of the shaft before pulling it out.
Note: Ensure that lubricants (e.g. grease, oil) are removed before removing the casing.
- Remove the bolts on the casing covers.
- Pull the shaft with bearings from the housing.
Note: Extra care must be applied during dismantling and fitting of mechanical seal.
- Pull out the bearing from the Shaft
- Pull out the bearing using bearing Puller.
- Inspection and Repair
- Check the condition of the bearings. Worn-out and damaged bearings must be replaced.
- Check the physical appearance of the shaft seals and oil seals and proper bearing fitness to the shaft and to the housing.
- Damaged mechanical seals and oil seal must be replaced.
- Recondition/Replacement of Parts
- If there is no defective part, if necessary, System Maintenance Technician shall perform the reconditioning or refurbishing of the parts/components of the pump.
- A thorough evaluation of the parts or components is needed to conclude whether it can be reconditioned, or be replaced by a new one.
- System Maintenance Technician shall re-install the refurbished/reconditioned parts/components as it was dismantled.
Note: Refurbishing and reconditioning shall be done with extra care some parts or components are delicate, fragile and sensitive to dirt.
- Obtain Spare/Parts Procurement
- If there is a defective part, System Maintenance Technician shall give the defective parts/components to the System Maintenance Supervisor and they will check Spare Parts Stock Room for the availability of the said parts/components.
- If a spare is not available at Stock Room, perform Purchasing of Spare Parts procedure.
- As soon as the components/parts are available, the System Maintenance Technician shall perform the installation/fitting of components/parts. Installation shall be done carefully, because some components/parts are miniature, delicate, fragile and sensitive to dirt.
- System Maintenance Technician shall install/fit the new one as it dismantled.
- Assembling the Pump
- Install bearings and oil seals on the shaft.
- Install the shaft on the housing.
- Put front and back covers and tighten the bolts.
- Install mechanical seal on correct distance from the other end of the shaft.
- Install flange coupling on the other end.
- Install the impeller then put and tighten impeller lock-nut.
- Install the suction volute housing, then put and tighten the bolts.
- Installing the Pump
- Place and tighten all the bolts that hold the pump on the base plate.
- Drive Motor Installation and Alignment
- Position the motor on the base plate with its shaft and flange coupling linearly aligned with the pump’s shaft and flange coupling.
- Slide the motor forward to the pump to connect their flange couplings and shafts.
- Align the pump and motor. Check radial and linear alignments, by using the dial indicator. Adjust the motor position if necessary to attain proper alignment.
- Put and tighten coupling setscrew
- Put and tighten all fixing bolts on the base plate that holds the motor.
- Apply grease and oil lubricants.
- Test run
- Energize and proceed to testing