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Summary of Contents for Grindex 8125.230 Milli
- Page 1 Installation, Operation, and Maintenance 8125.230 Milli...
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Page 3: Table Of Contents
6.3 Change the oil................24 6.4 Replace the impeller............... 25 6.4.1 Remove the impeller..............25 6.4.2 Install the impeller..............26 6.5 Replace the motor cable..............28 6.5.1 Remove the motor cable............28 6.5.2 Install the motor cable...............29 8125.230 Milli Installation, Operation, and Maintenance... - Page 4 7.4 The pump runs but the motor protection trips........34 7.5 The pump delivers too little or no water..........35 8 Technical Reference......................37 8.1 Application limits................37 8.2 Motor data..................37 8.3 Specific motor data.................37 8.4 Dimensions and weights..............38 8.5 Performance curves................ 39 8125.230 Milli Installation, Operation, and Maintenance...
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Page 5: Introduction And Safety
This includes any modification to the equipment or use of parts not provided by Grindex. If there is a question regarding the intended use of the equipment, please contact a Grindex representative before proceeding. -
Page 6: User Safety
• Use ground-fault circuit interrupters on all receptacles, or have an assured equipment grounding conductor program. Biological hazards The product is designed for use in liquids that can be hazardous to your health. Observe these rules when you work with the product: 8125.230 Milli Installation, Operation, and Maintenance... -
Page 7: Protecting The Environment
• Sorting, recycling and disposal of solid or liquid waste • Clean-up of spills Exceptional sites CAUTION: Radiation Hazard Do NOT send the product to Grindex if it has been exposed to nuclear radiation, unless Grindex has been informed and appropriate actions have been agreed upon. 1.6 Spare parts CAUTION: Only use the manufacturer’s original spare parts to replace any worn or faulty... -
Page 8: Transportation And Storage
1) Always lift the unit by its designated lifting points. 2) Use suitable lifting equipment and ensure that the product is properly harnessed. 3) Wear personal protective equipment. 4) Stay clear of cables and suspended loads. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 9: Temperature Ranges For Transportation, Handling And Storage
Protect the product against humidity, heat sources, and mechanical damage. NOTICE: Do not place heavy weights on the packed product. Long-term storage If the unit is stored more than six months, then the following apply: 8125.230 Milli Installation, Operation, and Maintenance... - Page 10 • Before operating the unit after storage, it must be inspected with special attention to the seals and the cable entry. • The impeller/propeller must be rotated every other month to prevent the seals from sticking together. 8125.230 Milli Installation, Operation, and Maintenance...
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Page 11: Product Description
3.3 Monitoring equipment The following applies to the monitoring equipment of the pump: • The stator incorporates thermal contacts connected in series that activate the alarm at overtemperature. • The thermal contacts open at 135°C (275°F). 8125.230 Milli Installation, Operation, and Maintenance... -
Page 12: Level Regulators
Figure 1: The functionality of the level regulator 3.4 The data plate Introduction The data plate is a metal label located on the main body of the pump. The data plate lists key product specifications. 8125.230 Milli Installation, Operation, and Maintenance... - Page 13 4. Product weight 5. Maximum capacity 6. Maximum submergence 7. Maximum head 8. Degree of protection 9. Read installation manual 10.Thermal class 11.International standard 12.Maximum power consumption 13.Rated current 14.Manufacturer 15.Country of origin 16.Rated voltage 8125.230 Milli Installation, Operation, and Maintenance...
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Page 14: Installation
Choose applicable minimum velocity from the table, and choose proper dimension of the discharge line accordingly. Mixture Minimum velocity, meter per second (feet per second) Water + coarse gravel 4 (13) Water + gravel 3.5 (11) 8125.230 Milli Installation, Operation, and Maintenance... -
Page 15: Install
The pump is transportable and intended to operate either completely or partially submerged in the pumped liquid. The pump is equipped with a connection for hose or pipe. These requirements and instructions only apply when the installation is made according to the dimensional drawing. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 16: Make The Electrical Connections
Visually inspect equipment for damaged cables, cracked casings or other signs of damage. Make sure that electrical connections have been correctly made. WARNING: Crush Hazard Risk of automatic restart. 8125.230 Milli Installation, Operation, and Maintenance... - Page 17 Grounding (earthing) must be done in compliance with all local codes and regulations. DANGER: Electrical Hazard All electrical equipment must be grounded (earthed). Test the ground (earth) lead to verify that it is connected correctly and that the path to ground is continuous. 8125.230 Milli Installation, Operation, and Maintenance...
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Page 18: Connect The Motor Cable To The Pump
3. Make sure that the pump is correctly connected to ground (earth) . 4. Firmly tighten the cable entry into its bottom-most position. The seal sleeve and the washers must conform to the outside diameter of the cables. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 19: Cable Charts
Thermal detector in main bearing Pump Jumper Crimp connection Terminal board, terminal plate Crimp isolation Leakage sensor Motor protector Stator leads (U1, U2, U5, U6, V1, V2, V5, V6, W1, W2, W5, W6, Z1, Z5, Z6) 8125.230 Milli Installation, Operation, and Maintenance... -
Page 20: Check The Impeller Rotation
3. Check that the impeller rotates in the correct direction. The correct direction of impeller rotation is clockwise when you look at the pump from above. When started, the pump will react in the opposite direction to the impeller rotation. 8125.230 Milli Installation, Operation, and Maintenance... - Page 21 4 Installation Figure 3: Start reaction 4. If the impeller rotates in the wrong direction, then do the following: – If the motor has a 1-phase connection, then contact a sales or authorized service representative. 8125.230 Milli Installation, Operation, and Maintenance...
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Page 22: Operation
Always wait at least 15 seconds between starting attempts. Maximum allowed: 30 starts per hour. 5.2 Start the pump CAUTION: Crush Hazard The starting jerk can be powerful. Make sure nobody is close to the unit when it is started. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 23: Fill With Water
Let the pump run for a while in clean water, or flush it through the discharge connection. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 24: Maintenance
• Clean all parts thoroughly, particularly O-ring grooves. • Change all O-rings, gaskets, and seal washers. • Lubricate all springs, screws, O-rings with grease. During the reassembly, always make sure that existing index markings are in line. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 25: Torque Values
NOTICE: Make sure that the oil-plug and securing screws for the strainer or the pump housing are not tightened too hard. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 26: Change The Oil
Be careful when opening. Allow the chamber to de- pressurize before removal of the plug. 3. Turn the pump so that the oil hole faces downwards and let the oil run out into a container. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 27: Replace The Impeller
3. Put the oil screw back and tighten it. 6.4 Replace the impeller 6.4.1 Remove the impeller CAUTION: Cutting Hazard Worn parts can have sharp edges. Wear protective clothing. 1. Remove the strainer. 2. Remove the diffuser. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 28: Install The Impeller
This is to prevent the shaft from rotating with the impeller screw. 3. Fasten the impeller: a) Place the washer on the impeller screw. b) Mount the impeller. Make sure that the impeller hub disk center is aligned with the slotted shaft end. 8125.230 Milli Installation, Operation, and Maintenance... - Page 29 Tighten the impeller screw. Tightening torque: 9.3 Nm (6.9 ft-lb) d) Check that the impeller can rotate freely. 4. Mount the diffuser unit. 5. Mount the strainer and the screws. Tightening torque: 9.3 Nm (6.9 ft-lb) 8125.230 Milli Installation, Operation, and Maintenance...
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Page 30: Replace The Motor Cable
6 Maintenance 6.5 Replace the motor cable 6.5.1 Remove the motor cable 1. Loosen the cable entry. 2. Remove the pump top. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 31: Install The Motor Cable
3. Disconnect the motor cable from the terminals: a) Disconnect the power lead(s). b) Disconnect the ground (earth) lead(s). 4. Remove the motor cable. 6.5.2 Install the motor cable 1. Pull the cable through the pump top. 8125.230 Milli Installation, Operation, and Maintenance... - Page 32 If the cable is damaged, then cut off the damaged part and install new terminals. a) Connect the ground (earth) lead(s). b) Connect the power lead(s). 3. Install the pump top. 4. Tighten the cable entry. Make sure that it bottoms out. 8125.230 Milli Installation, Operation, and Maintenance...
- Page 33 6 Maintenance 8125.230 Milli Installation, Operation, and Maintenance...
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Page 34: Troubleshooting
• All connections are intact. • The relay and contactor coils are intact. • The control switch (Man/Auto) makes contact in both positions. Check the control circuit and functions. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 35: The Pump Does Not Stop When A Level Sensor Is Used
• Check the functioning of the level regulators. equipment. • Check the contactor and the control circuit. • Replace all defective items. The stop level is set too Raise the stop level. low. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 36: The Pump Starts-Stops-Starts In Rapid Sequence
Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in equipment damage. Cause Remedy The motor protection is Set the motor protection according to the data plate set too low. and if applicable the cable chart. 8125.230 Milli Installation, Operation, and Maintenance... -
Page 37: The Pump Delivers Too Little Or No Water
Failure to do so could result in death or serious injury. NOTICE: Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in equipment damage. 8125.230 Milli Installation, Operation, and Maintenance... - Page 38 If the problem persists, then contact a sales or authorized service representative. Always state the product number and the serial number of the pump, see Product Description on page 9. 8125.230 Milli Installation, Operation, and Maintenance...
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Page 39: Technical Reference
Motor encapsulation Motor encapsulation is in accordance with IP68. 8.3 Specific motor data 1-phase, 50 Hz Motor type: • 2,760 rpm • 420 W (0.5 hp) Voltage (V) Rated current (A) Starting current (A) 8125.230 Milli Installation, Operation, and Maintenance... -
Page 40: Dimensions And Weights
• 3,335 rpm • 450 W (0.6 hp) Voltage (V) Rated current (A) Starting current (A) 8.4 Dimensions and weights 459 mm (18.1 in) Ø190 mm (7.5 in) Weight without motor cable: 13 kg (29 lb) 8125.230 Milli Installation, Operation, and Maintenance... -
Page 41: Performance Curves
8 Technical Reference 8.5 Performance curves Test standard Pumps are tested in accordance with ISO 9906:2012, HI 11.6:2012. 50 Hz P [kW] H [m] Q [l/s] 8125.230 Milli Installation, Operation, and Maintenance... - Page 42 8 Technical Reference 60 Hz P [kW] H [m] Q [l/s] 8125.230 Milli Installation, Operation, and Maintenance...
- Page 44 Visit our Web site for the latest version of this document and more information Gesällvägen 33 174 07 Sundbyberg The original instruction is in English. All non-English www.grindex.com instructions are translations of the original instruction. Sweden Tel: +46-8-606 66 00 © 2014 Grindex Fax: +46-8-745 53 28 www.grindex.com 885581_4.0_en-US_2017-10_IOM_8125.230 Milli...
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