NAFFCO NVT 6-115 Installation Operation & Maintenance Download Page 1 | Manualshive

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INSTALLATION,

OPERATION &

MAINTENANCE

NAFFCO

FIRE PUMPS

VERTICAL TURBINE PUMP
NVT - SERIES

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Summary of Contents for NVT 6-115

Page 1: ...INSTALLATION OPERATION MAINTENANCE NAFFCO FIRE PUMPS VERTICAL TURBINE PUMP NVT SERIES I N S T R U C T I O N S...

Page 2: ...hile operating diesel engine Always wear safety shoes and safety gloves Monitor water leakage of pump gland packing If excessive leak adjust the packing do not place hands or finger into this area Dur...

Page 3: ...ire pump set it should be very careful not to broke or bend it Column and shaft should be supported by suitably sized timbers while laying on floor Strainer if fitted on the pump should be removed pri...

Page 4: ...TIONS VERTICAL TURBINE PUMP NVT SERIES Ref No NVT IOM 2020 V 01 5 INSTALLATION Fire water pump sets and control systems should be installed in accordance with this IOM maual Failure to install the sup...

Page 5: ...anent and rigid support to the entire pump Foundation area should have adequate space for future inspection and maintenance activities and should be sufficient enough to provide a solid footing The fo...

Page 6: ...ce it between the discharge head and the mounting flange align with the foundation bolts Continue to lower the pump assembly until the bolts enter the holes in the base Place wedges under the discharg...

Page 7: ...hoist the driver up Inspect the mounting surface register and clean these surfaces thoroughly Any burrs found on the mounting surface should be removed using a smooth mill file and clean afterwards Po...

Page 8: ...ons before proceeding further Install the top drive coupling or clutch over the top shaft Insert the ratchet pins In case of ball type ratchet place the ratchet balls and install the rotating half of...

Page 9: ...sting on the lateral bowl wear rings and considerable resistance due to friction can be felt when turning the shaft by hand To set impellers to the mid position proceed as follows Turn the adjusting n...

Page 10: ...on the base frame as shown in the Fig No 9 All shims must be perfectly flush and uniformly tighten up using securing means Base plates have to be grouted with non shrinking mortar up to the upper edge...

Page 11: ...flange discharge head mounting flange and foundation If any leveling problem is found between discharge head mounting flange and foundation it can be corrected by shimming between them 3 Eccentricity...

Page 12: ...e proceeding further with the installation Universal joint operating angles at each end of a drive shaft should always be at least 1 At the same time this deflection angles 1 and 2 must be equal withi...

Page 13: ...RATION AND MAINTENANCE INSTRUCTIONS VERTICAL TURBINE PUMP NVT SERIES Ref No NVT IOM 2020 V 01 shown in the Fig No 14 in order for the angle 1 and 2 be equal when the angle is measured using the method...

Page 14: ...NS VERTICAL TURBINE PUMP NVT SERIES Ref No NVT IOM 2020 V 01 Water tank should provide sufficient and reliable water supply for the fire protection system The depth of the tank should match with the p...

Page 15: ...y requirements for piping and these must be strictly observed Refer to the appropriate standard for details See Fig No 19 The discharge piping should be supported independently and close to the pump s...

Page 16: ...V 01 Install piping as straight as possible avoiding unnecessary bends Where necessary use 45 or long sweep 90 bends to decrease friction losses Make sure that all piping joints are airtight Where inc...

Page 17: ...ion Yes No 15 Cooling system from heat exchanger or cooling water supply pipe line from pump discharge is installed Engine Yes No 16 Cooling line return line one size higher than inlet and this return...

Page 18: ...shaft guard and pump stuffing box guard are fixed Yes No 6 OPERATION 6 1 Check List for Fire Pump Set Prior to Operation Commissioning SL NO DESCRIPTION RESULT 1 Check the foundation Yes No 2 Check t...

Page 19: ...e the proper connection of discharge line Ensure all fasteners are tightened Yes No 15 Ensure that all joints and splines of drive shaft are lubricate before startup Yes No 16 Check the all the fasten...

Page 20: ...CE 7 1 Weekly Inspection And Testing The purpose of the weekly fire pump inspection and test is to ensure the fire pump is in an operation condition free of physical damage and is capable of providing...

Page 21: ...the pressure in the controller sensing line After starting the pump should be run at least 10 minutes Record the pressure at which the pump automatically started Record the pump suction and discharge...

Page 22: ...ord current reading should be 2 to 5 amps after 5 minutes of running time Verify that engine will start off of both sets of batteries Verify operation of all supervisory signals i e pump running contr...

Page 23: ...b Wrap packing around the shaft before cutting Fig No 20 9 Cut the coil on the marked point to form a gland packing ring It should be cut diagonally at an angle of 45 degree 10 Check the first ring to...

Page 24: ...removing the bolts connecting them Remove the discharge head carefully without damaging or bending the shaft Disconnect the top column section by removing the bolts from the joint below it Carefully r...

Page 25: ...side diameter slightly smaller than the outside diameter of the bearing Use bearing pullers to pull out the suction bell bearings 8 4 Inspection Replacement and Reassembly Inspect the pump parts after...

Page 26: ...LLATION OPERATION AND MAINTENANCE INSTRUCTIONS VERTICAL TURBINE PUMP NVT SERIES Ref No NVT IOM 2020 V 01 8 5 Exploded View of Split case Fire Pump Fig No 22 1 2 3 5 4 6 7 8 9 10 11 12 13 14 20 21 23 2...

Page 27: ...Lock Nut 14 NVT 13014 Upper Line Column Pipe 32 NVT 13032 Suction Bell 15 NVT 13015 Middle Line Shaft 33 NVT 13033 Sleeve for Suction Bell 16 NVT 13016 Bearing Retainer 34 NVT 13034 Suction Bearing 17...

Page 28: ...liper Calibrated micrometer Spanner 1 set Multimeter Fiber Mallet Screw Driver Packing hook wire hook Pocket knife Machinist s level 9 3 Recommended Consumables Lubricating oil Grease Vaseline Sulfuri...

Page 29: ...l voltage Speed is too low Check if driver is directly across the line and receiving full voltage Defective motor Consult factory Wrong rotation Ensure that pump is rotating CCW when viewed from above...

Page 30: ...adding stages or increase impeller diameter Field head requirement greater than design head Check system friction loss increase discharge piping size Consult factory for adding stages or increase impe...

Page 31: ...te the system Misalignment Realign pump and driver Motor or gear drive hollow shaft end play maladjustment Adjust the end play as given in the driver IOM manual Foreign object lodged between impeller...

Page 32: ...C Electrical system 1 Exercise isolating switch and circuit breaker X Monthly 2 Trip circuit breaker if mechanism provided X Annually 3 Operate manual starting means electrical X Semiannually 4 Inspec...

Page 33: ...ank level X X Weekly b Tank float switch X X Weekly c Solenoids valve operation X X Weekly d Strainer filter or dirt leg or combination thereof X Quarterly e Water and foreign material in tank X Annua...

Page 34: ...l level X X Weekly b Oil change X 50 hours or annually c Oil filter s X 50 hours or annually d Lube oil heater X Weekly e Crankcase breather X X X Quarterly 3 Cooling system a Level X X Weekly b Antif...

Page 35: ...r heater X Weekly i Inspect duct work clean louvers combustion air X X X Annually j Water strainer X Quarterly 4 Exhaust system a Leakage X X Weekly b Drain condensate trap X Weekly c Insulation and f...

Page 36: ...ng voltage exceeds 9 volts on a 12 volt system or 18 volts on a 24 volt system X Weekly 6 Electrical system a General inspection X Weekly b Tighten control and power wiring connections X Annually c Wi...

Page 37: ...r authorizes any other person to assume for it any other liability in connection with such equipment This warranty will be considered void by the following 1 Failure to provide regular maintenance in...

Page 38: ...38 of 10 Subject to change without prior notice INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS VERTICAL TURBINE PUMP NVT SERIES Ref No NVT IOM 2020 V 01 NOTES...

Page 39: ...Project Name Location Commissioned By Date of Commissioning Signature of Commissioning Engineer...

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