Operation and Parts Manual MODEL st3020b1/st3020bcul submersible pumps Revision #2 (10/28/10) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
Table of Contents Multiquip ST3020B1/BCUL Submersible Pump Table Of Contents..................................................... 2 Parts Ordering Procedures....................................... 3 Safety Information................................................. 4-7 Dimensions............................................................... 8 Specifications........................................................... 9 Performance Curve................................................
www.multiquip.com Parts Ordering Procedures Ordering parts has never been easier! choose from three easy options: order via internet (dealers only): best deal! Effective: January 1st, 2006 If you have an MQ Account, to obtain a Username and Password, E-mail us at: parts@multiquip. com. Order parts on-line using Multiquip’s SmartEquip website! ■ View Parts Diagrams ■ Order Parts ■ Print Specification Information To obtain an MQ Account, contact your District Sales Manager for more information.
Safety Information Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others. Potential hazards associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.
Safety Information generaL saFetY CaUtion never operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations. Avoid wearing jewelry or loose fitting clothes that may snag on the controls or moving parts as this can cause serious injury. never operate this equipment when not feeling well due to fatigue, illness or when under medication.
Safety Information pUmp saFetY danger never operate the equipment in an explosive atmosphere or near combustible materials. An explosion or fire could result causing severe bodily harm or even death. Warning Accidental starting can cause severe injury or death. aLWaYs place the ON/OFF switch in the OFF position. do not place hands or fingers inside pump when pump is running. never disconnect any emergency or safety devices. These devices are intended for operator safety.
Safety Information NOTICE aLWaYs make certain that the voltage supplied to the pump is correct. Always read the pump’s nameplate to determine what the power requirements are. Power Cord/Cable Safety danger Control box safety danger aLWaYs have a qualified electrician perform the control box installation. The possibility exists of electrical shock or electrocution. NOTICE never let power cords or cables lay in water.
dimensions 0.9 in (23 mm) 6.7 in (170 mm) (1 6.9 76 in m m ) NPT3 3.3 in (83 mm) 6.3 in (160 mm) 24.8 in (631 mm) 590.6 in (15000 mm) 27.9 in (708 mm) 21.6 in (548 mm) 2.9 in 2.0 in (75 mm) (50 mm) NEMA L6-20P PLUG Figure 1. ST3020B1/BCUL Pump Dimensions page 8 — st3020b1/BCUL Sub. pump • operation and parts manual — rev.
specificationS Table 1. Specifications Model ST3020B1/BCUL Type Centrifugal Submersible Pump Impeller Cast Ductile Iron Suction & Discharge Size 3 in. (76 mm) Maximum Pumping Capacity 145 gallons/minute (548 liters/minute) Max Head 66 ft. (20.1 meters) Power 2 HP (1.5 kW) Voltage Phase 1Ø 230 V Starting Amps 52.2 A Running Amps 10.
performance curve Figure 2. Pump Performance Curve page 10 — st3020b1/BCUL Sub. pump • operation and parts manual — rev.
general information The Multiquip Model ST3020B1 and ST3020BCUL submersible pumps are designed to pump water and is used for the draining (dewatering) of well casings construction sites, coffer dams, manholes, transformer vaults and excavations. It's slim design (only 6.7 inches in diameter) allows it to fit easily inside 8-inch casings and eliminates the need for larger, more costly casings. The pump is powered by a 2-HP, 230-volt, single-phase motor for easy starting with a 6,000-watt generator.
components 5. Mechanical Seal – The hydraulic oil in the pump cavity is designed to provide cooling for the pump seal. This allows the pump to run dry for a limited period of time. 6. Mechanical Seal Oil Plug – Remove this plug to check and add lubrication oil (ISO VG32 grade) to the oil cavity. This oil protects the mechanical seal. Oil cavity should be full enough to cover seal spring. 7. Strainer Base – This strainer base is made of electrocoated steel which is resistant to hardware corrosion.
direct power operation Direct Power Operation The ST3020B1/BCUL submersible pumps can be configured to operate by direct power (Figure 4) or connected to a control box (Figures 9, 10 and 11) utilizing float switches. When the pump is connected directly to a 1Ø, 230 VAC, 60 Hz power source via the L6-20P plug located at the end of the power cord, the pump will operate soon as power is applied. It is suggested that a quick disconnect switch be installed as a means of turning the power on and off.
float switches Mechanical Float Switch Design Features Mechanically activated float switches offer a reliable low current control for dewatering applications. Float switch housings are constructed of high-impact, corrosion resistant polypropylene with mechanically activated, snap action contacts. How It Works The mechanical float switch control will turn ON (close) when the float tips 45° above -horizontal, indicating a high level, and turns OFF (open) when the float switch drops 45° below horizontal.
float switches Float Switches For unattended operation of the submersible pump two Model SW1WOPA float switches will be required. These float switches have bare wires on one end of the cable for direct connection to either the CB6 or CB200 Control Boxes. The illustration below is an example of using two single float switches in a typical dewatering application. Mounting The Float Switches NOTICE 1. Determine the required cord tether length as shown in Figure 5 and Table 3.
float switches (control box) Control Boxes (CB6 and CB200) For special remote pumping applications of the submersible pump, a control box (Models CB6 or CB200) is required. These water resistant control boxes provides watertight housing and glands to prevent water from leaking into the box, and a float switch interface. Both control boxes will require the use of two SW-1WOPA float switches, no plug, bare wires for direct connection to the control box. See Figures 9, 10 and 11 for control box connections.
float switches (control box) NOTE: CHECK JUMPER SETTINGS ON TRANSFORMER, REFERENCE CB200 WIRING DIAGRAM. 230 VAC CONFIGURATION SHOWN. EXTERNAL 1Ø (230 VAC) POWER SOURCE MOUNT CONTROL BOX IN AN UPRIGHT VERTICAL POSITION AS SHOWN. CIRCUIT BREAKER H1 BLACK H3 L2 H2 RED H4 L1 GREEN 110 115 120 XF X2 X1 X1 CONTACTOR FUSE GROUND MTE AC POWER TERMINAL BLOCK NOTE: REFER TO OPERATION MANUAL FOR THE CORRECT SETTING OF THE ELECTRONIC OVERLOAD UNIT.
float switches (control box) NOTE: CHECK JUMPER SETTINGS ON TRANSFORMER, REFERENCE CB200 WIRING DIAGRAM. 230 VAC CONFIGURATION SHOWN. EXTERNAL 1Ø 230VAC, 60 Hz 3Ø 230/460 VAC, 60 Hz POWER SOURCE A1 1L1 CIRCUIT BREAKER L1 RED L2 BLACK A2 5L3 3L2 ABB H2 H3 H1 GREEN MOUNT CONTROL BOX IN AN UPRIGHT VERTICAL POSITION AS SHOWN.
operation Hose Connections 1. Connect a 3-inch hose to the discharge port on the pump as shown in Figure 8. Make sure that hose is attached correctly to the discharge port. Attaching Lifting Rope 1. Attach a suitable lifting cable (rope) to the carrying handle (Figure 12) on the pump and lower the pump into place. For applications where there is an excessive amount of mud, grit or silt, the use of a support platform is desirable.
operation Control Box Installation Single-Phase Power Installation (Input) The following procedure outlines the steps for connecting the pump to a control box. The ST3020B1/BCUL submersible pump requires 1Ø, 230 VAC, 60 Hz, power for normal operation. DANGER The ST3020B1 and SB3020BCUL submersible pumps are also designed to work with a control box. This control box contains the necessary electronics (float switch connections) to operate the pump. Remember this control box contains hazardous voltages.
operation Connecting Dual float Switch (SW-1WOP) To Control Box 1. Remove the float switch input connector housing, then route the float switch wires through the cable gland on the control box. Attach the wires of the float switch to the terminal block as indicated by Table 5 and Figures 7, 8 and 9. Table 5. Dual Float switch Connections Float Terminal Wire Control Switch Block No. Color Box TB1-A1 Black Start CB6/CB200 TB1-A2 White TB1-A3 Black Stop CB6/CB200 TB1-A4 White 2.
operation Electronic Overload Module Settings NOTICE ALWAYS make sure that the electronic overload module supplied with the control box is set to the correct amperage. This overload module must MATCH the amperage requirements of the pump motor. Using an electronic overload unit with incorrect settings may result in serious damage to the pump. ALWAYS check the nameplate on the pump to determine the required amperage settings for the overload module.
operation Full Load Current (FLC) Amps Dial A Setting Automatic Operation 1. Set dial A pointer (Figure 16) to 10.5. This setting represents the running amps of the pump. This information can be located on the pump's nameplate 1. From the voltage source set the circuit breaker or quick disconnect switch to the ON position. Reset Dial Setting 2. Make sure float switches have been connected to the control box. References Figures 9,10 and 11. 1.
operation/maintenance Shut-Down Lubrication 1. Place the 3-position operation switch on the control box in the OFF position (Figure 20). To check the lubrication oil level of the mechanical seal perform the following: Checking Lubrication Oil Level 1. Lay the pump (Figure 21) on its side with the oil plug facing upwards. Figure 20. Manual-Off-On SW. (OFF Position) 2. Verify that the control box power ON light is OFF. 3.
maintenance Inspecting Lubrication Oil (Mechanical Seal) 1. Block the oil fill opening with a finger and roll pump to one side to drain (Figure 22) oil into a small transparent container. 2. If oil is cloudy (milky) or has water in it, indicates that mechanical seal is defective or worn. Replace mechanical seal. Figure 22. Lubrication Oil Inspection Impeller/Mechanical Seal Replacement Refer to the the following procedure and Figure 23 for the removal of the impeller and mechanical seal. 1.
maintenance Electrical Insulation Testing NOTICE Why perform electrical insulation testing? Insulation resistance is moisture and temperature sensitive. When temperature increases, insulation resistance decreases, and vice versa. Electrical insulation starts to age as soon as it's made. Harsh environments, especially those with extreme temperature changes and/or chemical contamination, cause further deterioration of the insulation (power cord).
TROUBLESHOOTING Table 8. Pump Troubleshooting SYMPTOM Pump Fails To Start Pump Fails to Deliver Full Output Water in Mechanical Seal Oil POSSIBLE PROBLEM SOLUTION Incorrect voltage/amps? Check that proper voltage (230 VAC, 60 Hz, singlephase) is being supplied to the pump. Also check that there is an adequate amount of current (amps) to run the pump. Check power source circuit breaker. Check electrical connections? If using float switches check wiring, inspect power cord.
cb6 wiring diagram PUMP POWER CORD EXTERNAL 1-PHASE (230 VAC, 60 Hz.) POWER SOURCE INPUT POWER CORD CIRCUIT BREAKER L1 L2 GND RED RED BLACK BLACK GREEN GREEN 230 VAC, 60 Hz. ELECTRIC MOTOR WIRING DIAGRAM THERMAL PROTECTOR BLK MAIN COIL GROUND B MAIN COIL R S U V V Y Y ALL WIRES ARE BLACK 14 AWG. UNLESS OTHERWISE NOTED.
cb200 wiring diagram SINGLE PHASE WIRING CONNECTIONS EXTERNAL SINGLE-PHASE (230 VOLT) POWER SOURCE CIRCUIT BREAKER M RED BLK L1 ELECTRONIC OVERLOAD UNIT TERMINALS 1 2 L2 3 4 5 6 GREEN L2 L3 H1 H3 H2 CONTROL TRANSFORMER X1 X2 ON INDICATOR LAMP OFF AUTO MANUAL 5 1 1 11 7 G 12 CONTACTOR 5 HP 4 23 PUMP SEE DETAIL “A” FOR JUMPER SELECTION 230 VAC SELECTION. 50VA CPT 6 F1 XF FUSE 1/2 AMP T1 T2 MOTOR T3 H4 GROUND ADD SUPPLIED JUMPER WIRE AS SHOWN FOR SINGLE PHASE OPERATION.
Explanation of Code in Remarks Column The following section explains the different symbols and remarks used in the Parts section of this manual. Use the help numbers found on the back page of the manual if there are any questions. NOTICE The contents and part numbers listed in the parts section are subject to change without notice. Multiquip does not guarantee the availability of the parts listed. sampLe parts List no. 1 2% 2% 3 4 part no. part name QtY. remarKs 12345 BOLT .....................1 .....
Suggested Spare Parts ST3020B1/ST3020BCUL SUBMERSIBLE PUMP 1 TO 3 UNITS Qty. P/N Description 1 ...........0203020B1120......AC CORD WITH GLAND 1............0202020060...........MECHANICAL SEAL 1............0203020B1103......PACKING NOTICE Part numbers on this Suggested Spare Parts list may supersede/replace the part numbers shown in the following parts lists. st3020b1/BCUL Sub. pump • operation and parts manual — rev.
pump assy. 127 877 265 120 266 436 121 60 236 104 123 263 122 102 8 125 103 214-2 174 65 1 81 76 160 3 47 53 214-1 4 224 2 322 179 132 176 131 129 119 177 31 33 130 6 32 146 90 µF @400 VAC 147 445 446 page 32 — st3020b1/BCUL Sub. pump • operation and parts manual — rev.
pump assy. NO. 1 2 3 4 6 8 31 32 33 47 53 60 65 76 81 102 103 104 119 120 121 122 123 125 127 129 130 131 132 146 147 160 174 176 177 179 214-1 214-2 224 236 263 265 266 322 436 445 446 877 PART NO.
motor assy. page 34 — st3020b1/BCUL Sub. pump • operation and parts manual — rev.
motor assy. NO. 129 130 131 132 268 269 270 273 322 445 446 540 606 607 608 PART NO. 0203020B1129 0203020B1130 0202020B131 0202020B132 0202020B268 0202020B269 0203020B1270 0203020B1273 0202020B322 0203020B1445 0203020B1446 0201503A540 0202020B606 0202020B607 0202020B608 PART NAME MOTOR HEAD COVER PACKING BOLT SPRING WASHER MOTOR A BRACKET MOTOR B BRACKET MOTOR ROTOR MOTOR STATOR NUT CAPACITOR AUTO CUT PROTECTOR PACKING MOTOR A BEARING MOTOR B BEARING WAVE WASHER QTY.
Terms and Conditions of Sale — Parts paYment terms 5. Parts must be in new and resalable condition, in the original Multiquip package (if any), and with Multiquip part numbers clearly marked. 6. The following items are not returnable: Multiquip reserves the right to quote and sell direct to Government agencies, and to Original Equipment Manufacturer accounts who use our products as integral parts of their own products. a. speCiaL eXpediting serviCe Terms of payment for parts are net 30 days.
notes st3020b1/BCUL Sub. pump • operation and parts manual — rev.
Operation and Parts Manual HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING UNITED STATES Multiquip Corporate Office 18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com MQ Parts Department Tel. (800) 421-1244 Fax (800) 537-3927 Mayco Parts 800-427-1244 310-537-3700 Fax: 800-672-7877 Fax: 310-637-3284 Warranty Department 800-306-2926 310-537-3700 Fax: 800-672-7877 Fax: 310-637-3284 Service Department 800-421-1244, Ext. 279 310-537-3700, Ext.
