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Table of Contents
Summary of Contents for Akerstedts FML
- Page 1 2010 Instructions, Fans FML, FKL, FAM, FAH These instructions provide information and documentation about the technology and care of the fans. They should be read by responsible personnel and service Markus Åkerstedt Åkerstedts Verkstads AB 2010‐05‐01...
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Page 2: Table Of Contents
2010‐05‐01 Table of contents FML, FKL, FAM, FAH..........................3 1. Prior to installation..........................3 1.2 Blow‐off forms..........................3 Direct drive ............................3 Belt‐drive ............................. 4 2. Installation ............................4 Set‐up and anchoring .......................... 4 2.1 Connection to ducts ........................4 Touch guard............................5 2.3 V‐belt drives ..........................5 NOTE! The belts must not be lubricated or rosined! ................6 2.4 Mounting V‐belt pulleys ........................ 7 4. Maintenance ............................ -
Page 3: Fml, Fkl, Fam, Fah
2010‐05‐01 Instructions Radial fans Explanation term F = Fan FML, FKL, FAM, FAH M = Internal code letter L = Low pressure (M = 1. Prior to Medium, H = High) installation B = Backwards bent This instruction should be read by concerned blades (P = Flat, R = personnel prior to commencing work with the Radial) product. F = Fan The rotational direction of the fan is indicated with an arrow on the fan cowl. Designation of the fan is shown on the fan type plate. In those cases K = Internal code letter where the product is Atex‐classed, this should be visible on the fan L = Low pressure information plate. Only the user is responsible for ensuring that the right product is applied for the right application and in the right environment. B = Backwards bent Please refer to the order acknowledgement for order‐specific information. blades (P = flat) F = Fan A = Internal code letter ... -
Page 4: Belt-Drive
2010‐05‐01 Beltdrive Design of blades B impeller 2. Installation Normally, the fans are delivered mounted on a steel base. For mounting on a concrete base, we Setup and recommend that the fan be secured using expansion bolts. anchoring All fans are tested prior 2.1 Connection to ducts P impeller to delivery. Assembly without vibration dampers: Rotating parts in the Connection ducts must NOT place a strain on the radial fans are both fan cowl; it can be deformed and come into statically and contact with the impeller. dynamically balanced. R impeller Sleeve Pipe connection ... -
Page 5: Touch Guard
2010‐05‐01 Assembly without vibration dampers: Connecting ducts shall be connected onto Shaft guard flexible sleeve couplings on inlets/outlets on the fan. Belt guard Touch guard According to the Swedish Occupational Safety and Health Act and The Swedish Board of Occupational Safety and Health, adequate protection for rotating machine elements is required. Normally a touch guard for the drive mechanism is included in the delivery. Guards for inlets and outlets must be specially ordered. In cases where the product is Atex‐classed, the fan shall be equipped with an protective guard to prevent objects from being sucked into the fan. Inlet guard 2.3 Vbelt drives 2.3.1. Alignment Check that the shafts are parallel Check that the pulley wheels do not run out of true during alignment Check the alignment of the pulley wheels with a ruler The check can be made using a ruler or ... -
Page 6: Note! The Belts Must Not Be Lubricated Or Rosined
2010‐05‐01 The maximum angular fault of the belt (measurement A in the figure, next page) may not exceed 2.00 mm per shaft distance For a shaft distance of less than 500 mm, a maximum angular misalignment of 1.00 mm is allowed Place rule B against both edges of pulley wheel C. Turn pulley wheels C and D so the maximum distance A is obtained. A = max. 2 mm per metre distance between shafts; max. 1.0 mm for a distance between shafts of less than 500 mm. 2.3.2. -
Page 7: Mounting V-Belt Pulleys
2010‐05‐01 Belt tension shall always be checked in conjunction with: The commissioning of a new fan New belts have been applied Mounting A long period of standstill Every 6 months Check for correct belt tension as follows: 1. Measure the distance between shafts 2. Measure the force P that is required to press the belt 16 mm calculated per metre of distance between shafts, perpendicular to the direction of the belt and approximately in between the pulley wheels. Trelleborg's tensiometer or a Clean and degrease all blank surfaces. Mount the same pulley wheel and small fish scale is recommended. Only use a ... -
Page 8: Maintenance
2010‐05‐01 4. Maintenance 4.1 Fan 3. Commissioning The following must be checked at least once per 3.1 Prior to startup year: Check the following before starting 1. Check fan balance. Feel the fan cowl and the fan: establish that there are no abnormal vibrations. 2. If there is drainage, check that this is not 1. The electric motor is clogged. connected to the correct 3. Check that any connected flexible sleeve mains voltage 2. All phases are connected couplings are intact. (fuses are whole) 4. Fans that are used for transporting material 3. That V‐belts have the correct should be checked via the inspection cover: tension clean the impeller when necessary. 4. -
Page 9: Bearings
2010‐05‐01 Lubrication of roller bearings: For motors up to size 200: Under normal Grease replacement: operating conditions, it is sufficient to replenish When replacing grease, the bearing housing must grease every 3rd year. be opened and cleaned of old grease and soap residue, which are decomposition products of For motors 225 and upwards: These motors grease, before new grease can be applied. have valve lubrication as standard. Instructions are provided on a special plate. the temperature seems abnormally high or changes suddenly, this is a sign of a disruption in 4.3 Bearings the function of the bearing. 4.3.1 Inspection Bearings mounted in machines where stoppage can have serious consequences Listen! should be inspected on a regular basis. Less critical bearing locations where operating conditions are not too demanding can often be left without any other supervision than normal lubrication. Observe! Check that lubricants are not leaking out Check the belt through broken seals or poorly tightened temperature! plugs. ... - Page 10 Type of fan Recommended Amount of lubrication interval in lubricant occasion. Overfilling can result in a severe rise in operating hours at bearing temperature resulting in the different rotational decomposition of the lubricant. speeds *) 4.3.3 Lubrication interval 5,000 3,000 hours gram (B,P,R) FML has bearings that are only greased once. Others should be greased according to table 1. <800 800-1,450 The tables apply for normal load and a bearing <750 750-1,300 temperature of 70°C (measured at outer ring) <700 700-1,150 At a temperature above 70°C: <650 650-1,050 Reduce the lubrication interval by half for each temperature increase by +15°C. NOTE! Naturally, ...
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Page 11: Troubleshooting
2010‐05‐01 4.4 Troubleshooting Disruption Possible cause Action Abnormal load. Change in fit, play or pre-tension. Incorrect mounting. Check installation and alignment Deficient lubrication or dirt in bearing Refill or change lubricant. Loud metallic Wrong bearing version Change to silent running bearings, alternatively bearings with less play sound... - Page 12 2010‐05‐01 The fan's operating position is specified in the order acknowledgement. Any deviation from this may only take place after advice from Åkerstedts. In the event the product is Atex‐ classed: o The gas temperature may not exceed +70°C. o The fan must be fitted with protective earth. o Temperature class T5 applies; maximum outer temperature +100°C. 12 ...
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