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Summary of Contents for Flo Fab MCST Series
- Page 1 August 21, 2021 Rev. 1 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST MCST SERIES PUMPS MODELS MCST-6 Flo Fab Inc. www.flofab.com...
- Page 2 Flo Fab Inc. www.flofab.com RECORD YOUR PUMP MODEL AND SERIAL NUMBER Please record your pump modelandserialnumber in the spaces provided below. Your Flo Fab distributor needs this information when you require parts or service. Pump Model: Serial Number: - 1 -...
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Page 3: Table Of Contents
Manual MCST Series TABLE OF CONTENTS INTRODUCTION........................- 4 - SAFETY SECTION A........................- 6 - Pump Dimensions..................... - 8 - INSTALLATION SECTION B....................- 8 - PREINSTALLATION INSPECTION................- 9 - POSITIONING PUMP......................- 9 - Lifting..........................- 9 - Mounting........................- 10 -... - Page 4 Manual MCST Series PREVENTIVE MAINTENANCE................... - 26 - TROUBLESHOOTING SECTION D................. - 25 - PERFORMANCE CURVE....................- 28 - PUMP MAINTENANCE AND REPAIR SECTION E..........- 28 - ILLUSTRATION........................ - 29 - PARTS LIST........................- 30 - PUMP AND SEAL DISASSEMBLY AND REASSEMBLY........- 31 - Back Cover and Wear Plate Removal..............
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Page 5: Introduction
Manual MCST Series INTRODUCTION Thank You for purchasing an FloFab pump. Read this manual carefully to learn how to safely install and operate your pump. Failure to do so could result in personal injury or damage to the pump. Because pump installations are seldom identical, this manual cannot possibly provide detailed instructions and precautions for every aspect of each specific application. - Page 6 Manual MCST Series HAZARD AND INSTRUCTION DEFINITIONS The following are used to alert maintenance personnel to procedures which require special attention, to those which could damage equipment, and to those which could be dangerous to personnel: Immediate hazards which WILL result in severe personal injury or death.
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Page 7: Safety Section A
Manual MCST Series SAFETY SECTION A This information applies to the MCST Series basic pumps. FloFab has no control over or particular knowledge of the power source which will be used. Refer to the manual accompanying the power source before attempting to begin operation. - Page 8 Manual MCST Series Do not operate the pump without the guards in place over the rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel. Do not remove plates, covers, gauges, pipe plugs, or fittings from an overheated pump.
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Page 9: Pump Dimensions
Manual MCST Series INSTALLATION SECTION B Review all SAFETY information in Section A. Since pump installations are seldom identical, this section offers only general recommendations and practices required to inspect, position, and arrange the pump and piping. Most of the information pertains to a standard static lift application where the pump is positioned above the free level of liquid to be pumped. -
Page 10: Preinstallation Inspection
Manual MCST Series PREINSTALLATION INSPECTION The pump assembly was inspected and tested before shipment from the factory. Before installation, inspect the pump for damage which may have occurred during shipment. Check as follows: Inspect the pump for cracks, dents, damaged threads, and other obvious damage. -
Page 11: Mounting
Manual MCST Series so that loads will be balanced and the pump or components will not be damaged when lifting. Suction and discharge hoses and piping must be removed from the pump before lifting. Lift the pump or component only as high as necessary and keep personnel away from suspended objects. -
Page 12: Gauges
Manual MCST Series Lines near the pump must be independently supported to avoid strain on the pump which could cause excessive vibration, decreased bearing life, and increased shaft and seal wear. If hose-type lines are used, they should have adequate support to secure them when filled with liquid and under pressure. -
Page 13: Suction Lines In Sumps
Manual MCST Series be compatible with the liquid being pumped. Suction Lines In Sumps If a single suction line is installed in a sump, it should be positioned away from the wall of the sump at a distance equal to 1 1/2 times the diameter of the suction line. -
Page 14: Discharge Lines
Manual MCST Series Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity DISCHARGE LINES Siphoning Do not terminate the discharge line at a level lower than that of the liquid being pumped unless a siphon breaker is used in the line. Otherwise, a siphoning action causing damage to the pump could result. -
Page 15: Bypass Lines
Manual MCST Series Bypass Lines Self-priming pumps are not air compressors. During the priming cycle, air from the suction line must be vented to atmosphere on the discharge side. If the discharge line is open, this air will be vented through the discharge. However, if a check valve has... -
Page 16: Automatic Air Release Valve
Manual MCST Series cause a pump which has lost prime to continue to operate without reaching prime, causing dangerous overheating and possible explosive rupture of the pump casing. Personnel could be severely injured. Allow an over-heated pump to cool before servicing. -
Page 17: Alignment
Manual MCST Series Figure 3. Typical Automatic Air Release Valve Installation Connect the valve outlet to a bleed line which slopes back to the wet well or sump. The bleed line must be the same size as the outlet opening or larger, depending on which Air Release Valve is being used. -
Page 18: Coupled Drives
Manual MCST Series installed, and before operation. NOTE Check Rotation, Section C, before final alignment of the pump. When mounted at the FloFab factory, driver and pump are aligned before shipment. Misalignment will occur in transit and handling. Pumps must be checked and realigned before operation. -
Page 19: Drive Belts
Manual MCST Series distance apart at all points (see Figure 5). Check parallel adjustment by laying a straightedge across both coupling rims at the top, bottom, and side. When the straightedge rests evenly on both halves of the coupling, the coupling is in horizontal parallel alignment. If the coupling is misaligned, use a feeler gauge between the coupling and the straightedge to measure the amount of misalignment. - Page 20 Manual MCST Series re-tension as required (see the following procedure for measuring belt tension). Thereafter, check and re-tension if required monthly or at 500 hour intervals, whichever comes first. Ideal drive belt tension is the lowest tension at which the belt will not slip under peak load conditions.
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Page 21: Priming
Manual MCST Series OPERATION SECTION C Review all SAFETY information in Section A. Follow the instructions on all tags, labels and decals attached to the pump. This pump is designed to handle liquids containing large entrained solids and slurries. Do not attempt to pump volatile, corrosive, or... -
Page 22: Starting
Manual MCST Series operating the pump. STARTING Consult the operations manual furnished with the power source. Rotation The correct direction of pump rotation is counterclockwise when facing the impeller. The pump could be damaged and performance adversely affected by incorrect rotation. -
Page 23: Leakage
Manual MCST Series required flow rate. Do not operate the pump against a closed discharge throttling valve for long periods of time. If operated against a closed discharge throttling valve, pump components will deteriorate, and the liquid could come to a boil, build pressure, and cause the pump casing to rupture or explode. -
Page 24: Pump Vacuum Check
Manual MCST Series If a suction strainer has been shipped with the pump or installed by the user, check the strainer regularly, and clean it as necessary. The strainer should also be checked if pump flow rate begins to drop. If a vacuum suction gauge has been installed, monitor and record the readings regularly to detect strainer blockage. -
Page 25: Bearing Temperature Check
Manual MCST Series parts. If the pump will be idle for more than a few hours, or if it has been pumping liquids containing a large amount of solids, drain the pump, and flush it thoroughly with clean water. To prevent large solids from clogging the drain port and preventing the pump from completely draining, insert a rod or stiff wire in the drain port, and agitate the liquid during the draining process. -
Page 26: Troubleshooting Section D
Manual MCST Series TROUBLESHOOTING SECTION D Review all SAFETY information in Section A. Before attempting to open or service the pump: 1. Familiarize yourself with this manual. 2. Lock out or disconnect the power source to ensure that pump will remain inoperative. - Page 27 Manual MCST Series Impeller clogged. Free impeller of debris. Pump speed too slow. Check driver output; check belts or couplings for slippage. Discharge head too high. Install bypass line. Suction lift too high. Measure lift w/vacuum gauge. Reduce lift and/or friction losses in suction line.
- Page 28 Manual MCST Series Record keeping is an essential component of a good preventive maintenance program. Changes in suction and discharge gauge readings (if so equipped) between regularly scheduled inspections can indicate problems that can be corrected before system damage or catastrophic failure occurs. The appearance of wearing parts should also be documented at each inspection for comparison as well.
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Page 29: Performance Curve
Manual MCST Series PUMP MAINTENANCE AND REPAIR SECTION E MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPERATING PERFORMANCE. PERFORMANCE CURVE * STANDARD PERFORMANCE FOR PUMP MODEL MCST-6 Based on 70°F (21° C) clear water at sea level with minimum suction lift. Since pump installations are seldom identical, your performance may be different due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim. -
Page 30: Illustration
Manual - MCST Series ILLUSTRATION - 29 - Figure 1. Pump Model MCST-6... -
Page 31: Parts List
Manual - MCST Series PARTS LIST Pump Model MCST-6 Contact the FloFab Company to verify part numbers. PART NAME PART NAME PART NAME Mechanical Seal Capscrew Pipe Plug Assembly Lifting Bolt / Eye Spring Washer Seal Plate Bolt Suction Flange... -
Page 32: Pump And Seal Disassembly And Reassembly
Manual MCST Series PUMP AND SEAL DISASSEMBLY AND REASSEMBLY Review all SAFETY information in Section A. Follow the instructions on all tags, label and decals attached to the pump. This pump requires little service due to its rugged, minimum-maintenance design. -
Page 33: Back Cover And Wear Plate Removal
Manual MCST Series so that loads will be balanced and the pump or components will not be damaged when lifting. Suction and discharge hoses and piping must be removed from the pump before lifting. Lift the pump or component only as high as necessary and keep personnel away from suspended objects. - Page 34 Manual MCST Series discharge piping; however, the power source must be removed to provide clearance. The impeller (49) should be loosened while the rotating assembly is still secured to the pump casing. Before loosening the impeller, remove the seal cavity drain plug (60) and drain the seal lubricant.
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Page 35: Impeller Removal
Manual MCST Series An optional disassembly tool is available from the factory. If the tool is used, follow the instructions packed with it. A similar tool may be assembled using 1/2‐inch pipe (schedule 80 steel or malleable iron) and a standard tee (see Figure 3). All threads are 1/2‐inch NPT. - Page 36 Manual MCST Series Shaft and bearing disassembly in the field is not recommended. These operations should be performed only in a properly equipped shop by qualified personnel. Remove the bearing cavity drain plug (61) and drain the lubricant. Clean and reinstall the drain plug.
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Page 37: Shaft And Bearing Reassembly And Installation
Manual MCST Series the bearing housing. Replace the bearings, shaft, or bearing housing if the proper bearing fit is not achieved. If bearing replacement is required, remove the outboard bearing snap ring (70) and use a bearing puller to remove the bearings from the shaft. -
Page 38: Seal Installation
Manual MCST Series Heat the bearings to a uniform temperature no higher than 250°F (120°C) and slide the bearings onto the shaft, one at a time, until they are fully seated. This should be done quickly, in one continuous motion, to prevent the bearings from cooling and sticking on the shaft. - Page 39 Manual MCST Series A new seal assembly should be installed any time the old seal is removed from the pump. Wear patterns on the finished faces cannot be realigned during reassembly. Reusing an old seal could result in premature failure.
- Page 40 Manual MCST Series seats against the shaft shoulder. When installing a new cartridge seal assembly, remove the seal from the container, and lubricate the external stationary seat O-ring with light oil. Slide the seal assembly onto the shaft until the external stationary seat O-ring engages the bore in the seal plate.
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Page 41: Impeller Installation And Adjustment
Manual MCST Series Handle the seal parts with extreme care to prevent damage. Be careful not to contaminate precision finished faces; even fingerprints on the faces can shorten seal life. If necessary, clean the faces with a non-oil based solvent and a clean, lint-free tissue. -
Page 42: Rotating Assembly Installation
Manual MCST Series At the slightest sign of binding, immediately back the impeller off, and check the threads for dirt. Do not try to force the impeller onto the shaft. A clearance of .025 to .040 inch (0.64 to 1.02 mm) between the impeller and the seal plate is recommended for maximum pump efficiency. -
Page 43: Back Cover And Wear Plate Installation And Adjustment
Manual MCST Series If the suction or discharge flanges were removed, replace the respective gaskets and secure them to the pump casing with the attaching hardware. Back Cover and Wear Plate Installation and Adjustment (Figures 1) If the wear plate (42) was removed for replacement, carefully center it on the suction back cover and secure it with the hardware (37, 38 and 39). -
Page 44: Pressure Relief Valve Maintenance
Manual MCST Series turned by hand. Tighten the hand nuts evenly to avoid binding. With the wear plate just touching the impeller, measure the clearance between the back side of the cover plate and the pump casing at different positions with a feel gauge. -
Page 45: Lubrication
Manual MCST Series Install the shaft key (68, Figure 1) and reconnect the power source. Be sure to install any guards used over the rotating members. Do not operate the pump without the guards in place over the rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel. -
Page 46: Power Source
Manual MCST Series approximately 21 ounces (0.6 liter) clean oil. Change the oil more frequently if the pump is operated continuously or installed in an environment with rapid temperature change. Monitor the condition of the bearing lubricant regularly for evidence of rust or moisture condensation. -
Page 47: Warranty
Manual MCST Series THE FloFab 12 MONTH LIMITED WARRANTY EXTENT AND DURATION OF WARRANTY Coverage: FloFab each individually warrant that its products and parts shall be free from defects in material and workmanship for sixty (12) months from the date of purchase by the original end user. - Page 48 Manual MCST Series INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES FOR BREACH OF THIS LIMITED WARRANTY OTHER THAN STATED HEREIN. Some states do not allow the exclusion or limitation of incidental or consequential damages. Accordingly, the above may not apply to you. This Limited Warranty gives you specific legal rights, and you may also have other rights which vary from state to state and province to province.