ROTOS PTM Series Instruction Manual

Turbine pumps plastic seal less magnetic drive

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SERIES PTM

TURBINE PUMPS

PLASTIC

SEAL LESS MAGNETIC DRIVE

INSTRUCTION MANUAL

FOR THE INSTALLATION

& OPERATION

& MAINTENANCE

- -

LMDP0102B

04-06

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Summary of Contents for ROTOS PTM Series

Page 1 SERIES PTM TURBINE PUMPS PLASTIC SEAL LESS MAGNETIC DRIVE INSTRUCTION MANUAL FOR THE INSTALLATION & OPERATION & MAINTENANCE LMDP0102B 04-06...
Page 2 To obtain the best performance from your ROTOS pump, please read these instructions carefully. Failure to observe the recommended procedures may result in damage to your ROTOS pump, and may also invalidate the supplier's guarantee. REMARKS ON THE USE OF THE PUMP PERFORMANCES CURVES REGENERATIVE TURBINE MAGNETIC DRIVE PUMPS 1.
Page 3 8. ATTENTION: For plastic pumps, flanges, connections and piping on the suction and discharge flange must be made in plastic and must be connected to the pump carefully and without the use of strenght. LMDP0102B 04-06...
Page 4 THIS INSTRUCTION MANUAL is intended to guide those responsible for the installation, operation and maintenance of ROTOS PTM Please read it carefully, before you install and operate your ROTOS pump. ROTOS PTM – SERIES PUMP PRESENTATION LMDP0102B 04-06...
Page 5 W A R N I N G WORKING WITH STRONG MAGNETS ESSENTIAL PRECAUTIONS Magnets can produce strong mechanical forces. There is a danger of injury when two magnets are brought together by hand. Magnets are brittle and are easily damaged. Breakage can occur when a magnet is placed near another magnet or iron object without mechanical guidance and special care.
Page 6 INDEX WHEN RECEIVING YOUR ROTOS PUMP PUMP FOUNDATION PUMP AND MOTOR ALIGNMENT LOCATION AND PIPING ELECTRICAL CONNECTION AND PROTECTION AGAINST DRY RUNNING ROTATION CHECK AND PREPARATION FOR START-UP PRIMING THE PUMP PUMP OPERATION MAINTENANCE SCHEDULE DECOMMISSIONING THE PUMP-(Anti-frost precautions) DISASSEMBLING THE PUMP-(Precautions when working with strong magnets)
Page 7: Pump Foundation
WHEN RECEIVING YOUR ROTOS PUMP Check the nameplate on the pump against the receiving and purchase order documents to be sure that the correct size of pump and materials of construction have been supplied. If a motor has been supplied, check that the power, speed, and voltage are correct.
Page 8 3. PUMP AND MOTOR ALIGNMENT Close-coupled pumps have been aligned prior to shipment and if they turn freely by hand, no further adjustments are necessary. Long-coupled pumps have been pre-aligned with the motor prior to shipment. If pump units receive rough treatment during shipment, they can become mis-aligned.
Page 9 3.2.2 Methods of checking alignment Straight edge Using a straight edge, check the distance from the shaft at several points on the circumference of the coupling. The distances d1 and d2 should each remain constant. IMPORTANT NOTE:The straight edge method checks static coupling alignment, not shaft alignment.
Page 10 Locate the pump as close as possible to the liquid source. The suction line should be as short and straight as possible, with a minimum number of bends. Bends should be radiused: avoid sharp elbows. Bends and fittings should be no closer than 20 pipe diameters to the pump suction, to allow undisturbed flow to the pump impeller.
Page 11 If the supply vessel is under vacuum, a pressure balancing line should connect the supply vessel and the pump inlet port. 4.9.1 The discharge line should be as short and direct as possible to minimize friction losses. An air vent (if permissible) should be installed at the first high point in the discharge line.
Page 12 AVOID PUMPING LIQUIDS CONTAINING SUSPENDED SOLIDS Standard Rotos pumps are designed to handle clean liquids. Unless specifically agreed prior to purchase of the pump from your supplier, suspended solid matter must be kept out of the pump by a suitable inlet strainer. The strainer mesh size should be less than 0.5mm, with an open surface area at least 2.5 x nominal cross-sectional area of pump inlet bore.
Page 13: Electrical Connection
ELECTRICAL CONNECTION The electrical connection to the motor should be carried out by a properly qualified electrician, using cable, cable glands and connection procedures suitable for the electrical load and for the location of the installation. All regulations governing electrical installations in HAZARDOUS AREAS must be strictly followed.
Page 14: Noise Levels
NOISE LEVELS The following table reports the noise level produced by PTM pumps running with in their operating limits and installed according to the instructions given in this manual (average values measured in free field at 1 meter from the pump set and elaborated according to ISO standard R1680 – curve A). The values are referred to groups with Aturia standard electric motors.
Page 15: Direction Of Rotation
Follow the coupling manufacturer's instructions as required. DIRECTION OF ROTATION Rotos PTM series pumps rotation and port location is reversible (see page 11) To confirm the direction of rotation use the following procedure: Open the suction and discharge valves, allowing the pump to fill with liquid.
Page 16: Priming The Pump
If the flow rate needs to be permanently restricted, a permanent orifice in the discharge line is more secure than an adjustable valve. ROTOS technical department will advise on a suitable orifice size if necessary.
Page 17 8.3.1 Rotos pumps are dynamically balanced during manufacture and are tested prior to dispatch to ensure that they run smoothly and without vibration. Replacement impellers are also balanced prior to dispatch.
Page 18: Maintenance Schedule
Provided the pumped liquid is clean and free of suspended solids, and the pump is operated within the manufacturer's stated performance limits and is not allowed to run dry, your ROTOS pump is capable of running for very long periods with minimal attention. Please read paragraph 8.1.
Page 19: Decommissioning The Pump
LABELLED, stating what substances or residues it may contain, warning the recipient of any possible hazard to health. Pumps sent to ROTOS for repair without any indication will not be accepted and resent to the Customer.
Page 20 11.4 Discharge the oil from the bearing housing. (long coupled units only). Replace the oil chamber plugs. 11.5 Remove the spacer element of the coupling, or if no spacer is present, remove the motor. With close-coupled pumps, the motor and external magnet assembly must be removed carefully, without damaging the magnet.
Page 21 DO NOT STRIKE THE MAGNET! The magnetic elements are brittle and are easily damaged. DO NOT ALLOW THE MAGNET TO FALL ON THE FLOOR! 11.9 Disassembly of external bearing housing See 11.15, page 22. 11.10 Removing the internal pump assembly Remove the nuts securing the bracket 6581.2 to the pump head.
Page 22 INSPECTION PRIOR TO REASSEMBLY Clean all the parts carefully. Ball bearings should be washed in a clean solvent and allowed to dry, then oiled. Check all pump parts and replace worn ones. REASSEMBLING THE PUMP WORK IN A CLEAN AREA! DO NOT ALLOW MAGNETIC MATERIALS TO CLING TO THE PUMP MAGNETS.
Page 23 LOCATION OF EXTERNAL MAGNET ON MOTOR OR PEDESTAL SHAFT CLOSE COUPLED UNITS Dimensions PTM PUMPS External Motor frame magnet type size Standard 109,5 2x5 / 2,5x6 Standard 112,5 2,5x6,5 / 2,5x7 Standard 133,5 2,5x7,5 / 2,5x8 Standard 100-112 Standard 3x10 Insert key into shaft keyway and locate the outer magnet on the shaft in accordance with dimension A shown above, and tighten the grub-screw.
Page 24 If your ROTOS pump does not run satisfactorily, be prepared to look critically at the system as well as at the pump itself. This section lists some possible pumping problems and indicates how they may be overcome.
Page 25 14.3 EXCESSIVE FLOW Causes Remedies Actual total discharge head is Reduce speed of rotation if possible. Fit smaller diameter below rated head of pump. impeller.Partly close discharge valve to restrict flow. 14.4 MOTOR OVERHEATS AND/OR CUTS OUT Causes Remedies 14.4.1 See 14.3.
Page 26: Dismantling The Pump
” “ ” ROTOS PTM series pumps will perform satisfactorily with liquids up to 50cps visc. and 1.9 S.G. THESE VALUES ARE PURELY INDICATIVE. CONTACT YOUR AREA TECHNICAL DEPARTMENT FOR ADVICE ON PARTICULAR APPLICATIONS SPARE PARTS FOR ROTOS PTM SERIES PUMPS...