Do you have a question about the Ergonomic 320.250 DGS and is the answer not in the manual?
Questions and answers
derek
April 7, 2025
Troubleshooting . control fuse blows upon starting the bandsaw. any ideas on possible problem. thank you
1 comments:
Mr. Anderson
May 14, 2025
The control fuse could blow when starting the Bomar Ergonomic 320.250 DGS bandsaw due to issues such as a closed transfer relay (thermal protector), incorrect contactor, or faults in the electrical system like voltage problems or short circuits. Each relay and contactor must be checked to identify the exact cause.
Series Ergonomic Ergonomic 320.250 DGS Operating instructions Before transporting and using the machine, please read the instructions thoroughly! Seriové číslo / Serien Nummer / Serial Number ___________________ ...
Main switch ....................................31 3.2. Control elements ..................................31 3.2.1. Ergonomic 320.250 DGS without frequency converter .............. 31 3.2.2. Ergonomic 320.250 DGS with frequency converter ..............32 3.3. Machine control ..................................33 ...
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ASSEMBLIES FOR SPARE PARTS ORDER ........83 7.1. Ergonomic 320.250 DGS ..............................84 7.2. Kusovník / Stückliste / Piece list – Ergonomic 320.250 DGS ............... 85 7.3. Ergonomic 320.250 DGS ..............................86 7.4.
Keep the operating instructions in good condition! 1.1. Machine determination The band saw Ergonomic 320.250 DGS is determined for cutting and shortening of rolled bars and drawn bars and profiles from steels, stainless steels, non-ferrous metals and plastics with cutting angles from -45° to 60°.
1.3. Safety notes for machine operator Attention! Machine can be operated by person older than 18 years! Machine can be operated only person physically and mentally fit for this activity Machine can be operated only by one person. Machine operator is responsible for presence of other persons by the machine.
Do not remove or do not lock the limit switches or safety equipments! Any use of the saw, accessories or machine parts other than that intended by the BOMAR, spol. s r.o. company is not permitted. The guarantee on this product will be afterward lost and BOMAR, spol.
The device includes a limit switch. Its adjustment is described in chapter „Servicing and adjusting“. Check the switch carefully and periodically – adjust it if necessary. 1.6. Safety notes for the cooling Attention! When handling cooling agents always wear hazardous fluid-proof gloves! Wear protective goggles! Cooling liquid can get in contact with your eyes and may...
2.4. Transportation and stocking 2.4.1. Conditions for transportation and stocking Keep recommendations for the manufacturers for transportation and stocking! If the recommendations are not kept, damage can occur to the machine. • Don’t use a forklift truck for handling the machine, if you do not have license for it! •...
2.5. Activation 2.5.1. Machine working conditions Keep the conditions of the manufacturer for machine operating! If recommendations are not kept, damage can occur to the machine. The manufacturer warrants the correct function of the machine for these conditions: • At temperature air from 5°C to 40°C, the temperature average during 24 hours must not exceed over 35°C.
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Component Description Hand wheel assembling Take down the nut from holder of the hand wheel. Insert it to the hole on back side of the wheel and screw on the holder. Length stop assembly Take on the length stop to the hole on vice side. Shift the length stop till the saw band (arrow 1) and set the scale to the value „0“...
Check the floor supporting capacity before machine installing. If the floor capacity does not agree with requirements, you must prepare the necessary base for the machine. Minimal requirement: machine weight – Ergonomic 320.250 DGS – 372 kg + weight of accessories + maximum weight of material •...
2.7. Electrical connection Attention! Only a qualified professional must carry out the servicing and repairs of the electric equipment! Take special care during work with electrical equipment. High voltage shock can have fatal consequences! Always keep notes about work safety. Electrical parameters of the machine: •...
Constant tooth system – the saw band has parallel tooth pitch all over length. This way is suitable for cutting of solid material. BOMAR for recommended Variable tooth system for band saw. Variable tooth system – tooth pitch is variable. Variable tooth system is used for profiled materials and bundle cutting.
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When cutting small pieces run the band until approximately 300 cm of material has been cut. When cutting large pieces run the band for 15 minutes approximately. When the band has been run, increase the lowering-speed to normal speed. The running in of the saw band avoids micro-breaks on the cutting edges of new saw band ensuing from first excessive stress.
It is not depicted on the diagram. 3.2. Control elements 3.2.1. Ergonomic 320.250 DGS without frequency converter Switch of the cutting speed Select the cutting speed during cutting (40 or 80 m. min-1). TOTAL STOP button In case of emergency, the machine is stated to the order!
Notice: If you keep closing the throttle valve too tightly, the valve seat may wear off which causes its leakage. Therefore, close the valve always gently. 3.2.2. Ergonomic 320.250 DGS with frequency converter Switch of the cutting speed Select the cutting speed during cutting (20–120 m. min...
3.3. Machine control 3.3.1. Cutting Open the vice of the band saw. Set the length stop to the desired length of the material. Set the desired cutting angle. Insert the material and pull it to the length stop. upnout spannen tighten povolit...
If you cut long pieces of the material (for example rod, tube), you must use the roller conveyors for material shifting to the band saw. Contact Bomar for more information about roller conveyors Make sure the conveyor is long enough and the material cannot tip off the conveyor.
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Always weld the material at the rear end of the bundle to secure it from moving. Before welding always, switch the machine off at the main switch! The magnetic fields, which often occur during welding, may damage the controls! Square material bundle: Attention: Not all material shapes are suitable for bundle cuts.
4.1. Saw band dismantling Lift the saw frame to the top position. Stop the saw frame in top position by control valve. Dismantle yellow protective cover of the saw band. The cover is clamped with two screws. Dismantle back covering sheet metal of the saw frame. The covering sheet metal is clamped with two screws with plastic head.
Turn by stretching star to the left side, release saw band stretching and pull saw band from blade wheels. Pull up the saw band from the guiding cubes. 4.2. Saw band installation Prior to installation, clean all track wheels, guide cubes and inner side of the arm thoroughly of all traces of chips and dirt.
Put the brush into the function position and screw up the holder. Install the rear protective cover of the frame. Install the yellow protective cover of the band. The arrow on the cover must match the direction of the arrow on the band. If it does not, you must turn the band round.
Open cover(s) of the wheels and check position of the saw band on the both wheels.. • If the distance between backside of the saw band and the offset wheel is 1 mm, setting is right.. • If the distance is bigger than 1 mm, or the saw band is on the offset of the wheel, set the saw band.
Tighten the stop screw on the rear side of guide cube so that the band cannot to move Release the stop screw and at the same time grip the saw band by hand and check if the hard metal guide does not put up to much resistance against the movement of the band.
4.4.5. Angular stops adjustments There are two fixed stops with adjustable screw on the console. The angular stop- points setting have to be periodically inspected to prevent inaccurate angular cuts In order to check angular stop settings, turn the arm to the fixed stop and put the protractor on the saw band and vice jaw If the angles are not set correctly, release the nut on the stop screw.
Secure the stop screw with nut and check the switch setting once more ATTENTION! If the band is stretched to the value according the TENZOMAT but the holder of thstop screw is not situated on the boundary of the red and green colour, it is necessary to stick the sticker in the correct place.
Release the nut of the stop screw and screw down the stop screw Lower the arm to the lower stop and turn on the band driver Screw out the stop screw until the band driver stops Secure the screw with nut again and check the limit switch setting once more 4.5.
Use oils with specification DIN 51517 in the gearboxes. Select the viscosity grade ISO VG according to the original oil fill. Attention: When replacing, use oils recommended by BOMAR or oils, which has comparable parameters from the other manufacturers. Do not forget, that mineral and synthetic oils must not be mixed! ...
Recommended oils and quantity according to the type of the band saw Band saw Gearbox oil Capacity Ergonomic 320.250 DGS Paramo PP7 Shell Tivela S 320 Swarf conveyer 0,075 l Comparative table of the gearbox oils Viscosity grade Manufacturer...
Use oils with specification DIN 51524-HLP, ISO 6743-4 and viscosity grade ISO VG 46 in hydraulic aggregates. Note: When replacing, use oils recommended by BOMAR or oils, which has comparable parameters from the other manufacturers. Do not forget, that mineral and synthetic oils may not be mixed!
4.6.5. Hydraulic oil level check Note: This chapter is only for the band saws, which has hydraulic equipment Recommended type of the hydraulic oil is placed in chapter Hydraulic oils Pull up the gauge and check the state of the oil. The oil level must be situated in water- glas.
4.7. Machine cleaning Clean the machine from the cooling liquid and impurities after every shift stopping. Conserve the guiding surfaces, mainly. • Clamping jaws guiding of the main and feeding vice. • The guiding of the feeder. • Loading surface of the main, feeding vice, and area under them. •...
Install the saw band and adjust guide cube and hard metal guides. Attention! Vice must has aluminum jaws or should be placed in a vice aluminum produc, that avoid damage to the pin during clamping. 4.8.2. Saw band guiding rollers replacement If the saw band is not sufficiently guided by guiding rollers and/or if the rollers are obviously worn, the rollers should be replaced.
Pull both guide rollers from their eccentrics. Put new guide rollers on the eccentrics and screw the eccentrics to the guide cube. Now insert a test piece of saw band (cca 15 - 20 cm) into the guide cube. Adjust both eccentrics so that the band runs in the middle of milled groove.
4.8.4. Stretching wheel replacement Dismantle the saw band. Screw off the screw of the stretching wheel and pull off the washer. Screw on the auxiliary screw to the shaft of the stretching wheel. Put on the three-leg puller on the stretching wheel and pull off it from the shaft. If the lower bearing stays on the shaft, pull of it from the shaft with two-leg puller.
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Insert the bearing to the hole in the wheel and push it to the retaining ring. Clean the shaft and oil it. Install the new stretching wheel on the shaft. Install the distance ring on the shaft and push it to the lower bearing. 10.
4.8.5. Driving wheel replacement Dismantle the saw band. Screw of the fastening screw of the driving wheel and pull off the washer. Screw on the auxiliary screw to the driving shaft. Install the three-leg puller on the driving wheel and pull off it from the shaft. ...
Check, if the feather and the driving shaft are not damaged. Contact your supplier for parts replacement. If the shaft and the feather are in good order, clean them, oil them and install them on the driving shaft. Install the washer and screw on the driving wheel. Install the saw band.
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Remove the hosepipe leading the cooling agent from the connection on the pump. Unscrew four screws on the cooling pump flange and pull out the pump from the metal sheet holder. Remove the cover of the pump terminal switchboard. Disconnect 4 terminal connectors of the input cables.
5.1. Mechanical problems Problem Possible causes Repair Wrongly adjusted hard metal guides. Set according to the chapter „Servicing and adjustment“ Worn hard metal guides. Replace to the chapter „Worn pieces replacement“ Wrongly adjusted cubes of the saw Set according to the chapter „Servicing and band guiding.
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Problem Possible causes Repair Worn saw band guide bearings. Check guiding bearings and if you notice some sort of excessive damage, replace them according to chapter„Worn pieces replacement“ Wrongly adjusted guiding cubes of the Set guiding cube according to chapter „Servicing saw band.
Problem Possible causes Repair The brush position and the brush cover The brush cover must be posed, in order to the is adjusted wrong – with the brush brush can be turned. cannot be turned. Backslash in driving wheel lodgement Change the driving shaft for a long one, new 12.
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Manual version: 1.02 / Mar. 2010 Manual rev.:...
• In die Bestellung der Ersatzteile führen Sie immer an: Maschinentyp (z. B. Ergonomic 320.250 DGS), Serien Nr. (z. B. 125) und Baujahr (z. B. 1999). • For spare parts order, you must always to allege: type of machine (for example Ergonomic 320.250 DGS), serial number (for example 125, see cover page) and...
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Do you have a question about the Ergonomic 320.250 DGS and is the answer not in the manual?
Questions and answers
Troubleshooting . control fuse blows upon starting the bandsaw. any ideas on possible problem. thank you
The control fuse could blow when starting the Bomar Ergonomic 320.250 DGS bandsaw due to issues such as a closed transfer relay (thermal protector), incorrect contactor, or faults in the electrical system like voltage problems or short circuits. Each relay and contactor must be checked to identify the exact cause.
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