INSTALLATION OPERATIONS MAINTENANCE TOWER SYSTEM MEDIA FILTERS STS I&O MANUAL 1365 N. Clovis Avenue Fresno, California 93727 (559) 255-1601 WWW.LAKOS.COM LS-644 (Rev.
STS SERIES MEDIA FILTERS Installation, Operation, & Maintenance Manual I. INTRODUCTION The LAKOS STS Series Media Filters are specifically designed for use in fullstream, side-stream, and basin sweeping (SWP) applications. For side-stream, we recommend the industry standard filtration rate range of 10%-20% based on the fullstream flow of the system.
II. WARRANTY All products manufactured and marketed by this corporation are warranted to be free of defects in material and workmanship for a period of at least one-year from the date of delivery.
3. LAKOS sand media is shipped separately in 100 lb. (45 kg) bags. The exact number of bags is determined by the actual system size (see chart below). Do not introduce media sand into the STS system until the system is placed in its final operating position.
. It is recommended that service valves be installed on the STS system inlet and outlet so that the unit can be isolated for any maintenance or repairs when necessary. 6. All LAKOS STS systems are configured for either Source (S) or City (C) backwash. If your system is designed for City (C) backwash, city (or other external) water supply piping will need to be plumbed to the system backwash inlet connection (see drawing STS-0002).
10. Once all pipe connections are installed and properly secure, open the STS Media filter’s top access port. Inspect the PVC underdrain to be sure all parts (laterals) and connections are secure and nothing is broken. Fill the STS about one-third to half full with water. Then, SLOWLY add the appropriate amount of sand (refer to media sand chart above). It is important that the sand be added slowly so that no damage occurs to the laterals on the underdrain assembly.
STS - HOW IT WORKS SCHEMATIC The Basic Steps of Media Filtration 1. 2. 3. 4. 5. 6. Unfiltered system water enters the pump suction INLET. Water is pumped to top and is uniformly dispersed over the media bed. Water passes thru the media bed leaving debris behind. Filtered water exits the OUTLET. The media bed is cleaned through a backwash cycle at specified intervals or differential pressure. The backwash cycle runs for a 3 minute period. System returns to normal operating mode.
V. START-UP AND OPERATION CAUTION !!!!!!!!!!!! Please be aware that when the main power disconnect is turned to the “ON” position the STS system valves and linkage will automatically rotate into a backwash configuration and will stay in the backwash cycle for 3 minutes. The valves and linkage should then rotate back into the filter operation mode. NOTE: Make sure that all suction valves (from the source of water to the pump intake) are fully opened when the pump is running.
5. Check STS system inlet and outlet pressure gauges. Proper operating parameters will result in an inlet pressure from approximately 17-20 psi (1.21.4 bar) above the system flow pressure to the STS system and an outlet pressure of 16-19 psi (1.1-1.3 bar) above the system pressure flow pressure to the STS system. If your system is a STS/SWP model that is being used in conjunction with sweeper piping please see addition information below. 6.
the suction strainer). Use a compressed air hose to remove any water trapped in the pump casing or flush the system with antifreeze. Do not replace the plugs. Store them in the strainer basket for the winter. Alternatively, remove the pump and motor from the plumbing entirely. Store them indoors in a warm and dry place. The STS tank and the purge line should also be drained of liquid to prevent damage from freezing.
VI. MAINTENANCE 1. A STS System START-UP FORM is included in this manual Record all readings (inlet and outlet pressures, motor amperage draw and liquid flow rate) during start-up as reference point (see note 3). Please complete the required information and return this form to your local representative as soon as possible. You may want to keep a copy for your records. 2. Record and compare these readings whenever periodic check-up and maintenance is required.
opposite side. Wipe it clean. Whenever motor is required to be unhooked/ repaired, follow shut-off lock-out procedure and refer to the pump/motor manufacturers I&O manual as required. C. CONTROL PANEL/PUMP STARTER: A blown-out fuse and/or consistently kicked-back circuit breaker is indicative of a motor overloading/overheating. The built-in thermostat in the motor is experiencing an excessive rise in temperature, which might be caused by sudden voltage increase/drop, phase imbalance or over-torqued shaft.
STS Operation and Maintenance Schedule Type of Service Start Up Monthly Semiannually Shutdown Annually General Condition of Unit X X Drain Condensate from air line to pneumatic actuator (if applicable) As Required As Required As Required As Required As Required Clean pre-strainer basket As Required As Required As Required As Required As Required X Inspect gaskets X X Check pump shaft for free rotation X X Check operation of valves X X X Check, lubricate clamp on filter tank a
VII. TROUBLE SHOOTING PROCEDURES PROBLEM POSSIBLE CAUSES l 1. Install throttling valve to control flow. l causing “coning” of media sand and/or forcing contaminants through filter outlet. Air in tank(s) may cause 2. Bleed off trapped air in system. disruption of the media sand bed. Incorrect media sand. 3. Replace with proper media sand. Consult your LAKOS representative. Backwash more often at lower differential pressure.
VII. TROUBLE SHOOTING PROCEDURES (con’t) PROBLEM POSSIBLE CAUSES SOLUTIONS l Controller power may 1. Be sure wiring is connected correctly. Automatic Backwash Fails to Cycle Replace circuit fuses. Turn on power. Controller may be faulty and need replacement. be off or circuit fuses tripped. l Improper setting of differential switch. l Actuator malfunctioning. l Incorrect media sand Media Sand Appears Downstream 2. Adjust as necessary. 3. Check connections 1.
VII. TROUBLE SHOOTING PROCEDURES (con’t) PROBLEM POSSIBLE CAUSES l Suction line is not Pump will not prime (standard, not selfpriming) SOLUTIONS 1. Check and clean out pump suction prestrainer as required. 2. Check and clean pump pre-strainer as required. l Air leaks. 3. Check and tighten all connections as required. l Pump rotating wrong 4. Check pump rotation against motor rotation arrow and rewire if necessary for proper rotation. 1. Cover motor with some type of sun shade if possible.
VIII. STANDARD STS PUMP CURVES & SECTIONAL VIEWS Models: STS-15-025 Flow-rate: 25gpm Impeller Trim: 4.00 Motor HP: 0.5 Scot Pump #11 Pump part number: 118091 Pump Repair Kit number: 114687 Models: STS-18-045 Flow-rate: 45gpm Impeller Trim: 4.60 Motor HP: 1.0 Scot Pump #11 Pump part number: 118092 Pump Repair Kit number: 114687 Models: STS-24-075 Flow-rate: 75gpm Impeller Trim: 3.63 Motor HP: 1.
VIII. STS/SWP PUMP CURVES & SECTIONAL VIEWS Models: STS-24-075/SWP Flow-rate: 75gpm Impeller Trim: 5.37 Motor HP: 3.0 Scot Pump #16 Pump part number: 124026 Pump Repair Kit number: 112197 Models: STS-30-110/SWP Flow-rate: 110gpm Impeller Trim: 5.37 Motor HP: 5.0 Scot Pump #17 Pump part number: 124027 Pump Repair Kit number: 112197 Models: STS-36-165/SWP Flow-rate: 165gpm Impeller Trim: 5.25 Motor HP: 4.
IX. STS ELECTRICAL SCHEMATICS There are two basic electrical schematics for the STS systems. They are either based on a “CITY” backwash configuration or “SYSTEM” backwash configuration. The following two diagrams (city and system) are meant to serve as a basic reference that shows the differences between to the two. Each STS system has a different electrical wiring schematic, so many in fact that we can not show all of them in this manual.
EXTERNAL WIRING DIAGRAM FOR SYSTEMS WITH ELECTRIC ACTUATORS.
USER INSTRUCTIONS Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 – 08/04 (Replaces IOM-12156) Experience In Motion Installation Operation Maintenance
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Contents Description 3 Installation 3 Electrical Installation and Adjustment 4 Options and Adjustments (Factory Installed) 6 Center-Off (180° Rotation) 6 Feedback Potentiometers (Single, Dual) 8 I-75 Interface 10 Extra Limit Switches (M1 or M2) 11 Mechanical Brake (10-2375 Actuators) 11 Cycle Length Control (CLC Module) 11 Heater and Thermostat 12 Drain/Breather (V53) Option (10-2375 Actuators) 12
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Description Installation Worcester Actuation Systems/McCANNA Series 75 actuators are reversible electric quarter-turn valve actuators. Standard units can provide up to 3000 in-lb of torque and have capacitor-start, capacitorrun motors and permanently lubricated gear trains.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 pin(s). Add the two additional Belleville washers with their larger diameter sides touching each other. Add the self-locking nut to the stem and tighten while holding the stem flats with wrench. Tighten until Belleville washers are flat, the nut will “bottom”, and then back nut off 1⁄3 turn. The two additional Belleville washers and the self-locking nut are included in the mounting kit. a C.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 six screws are in an envelope and inside the cover) and lift cover from unit. 25-3075 Z Remove indicator knob capscrew with Allen wrench and lift knob from shaft. Remove the cover screws and lift cover from unit. B. Make conduit connection to NPT fitting on actuator base. Connect power supply to actuator terminal strip as shown on electrical schematic diagram(s) located inside actuator cover and also in this manual.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Options and Adjustments (Factory Installed) Set cam #3 such that hook of switch 3 lever arm has just dropped off the cam. Tighten cam screw without moving cam. NOTE: For wiring of the following options, please refer to the appropriate option wiring diagram(s) located inside actuator cover or included with option kit. Wiring diagrams for most options are also included in this manual for reference.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 SPECIAL NOTE: If during any of these checks, the actuator shaft stops other than at the required positions, a readjustment of the center-off cams is needed. At no time shall both center-off switches be activated by their cams at the same time. The N.O. contacts on both center-off switches are typically closed. The center-off switch levers must be tripped by their center-off cams at different times.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Cam settings are as follows: a Switch 1 opens at 0°. Controls first divert position. CAUTION: Do not overstretch the snap ring, use the minimum opening to allow snap ring to slip over the gear. Switch 2 opens at 180°. Controls secont divert position. Switch 3 opens at 89°. Controls center-off position from first divert position. Switch 4 opens at 91°. Controls center-off position from second divert position.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Feedback Potentiometers 10-2375 Plan View View A-A 25/3075 Plan View Item Description View B-B Item Description 1 Limit Switches 10 Potentiometer Leads 2 Motor Module 11 Potentiometer Shaft 3 Motor Module Mounting Screws (2) 12 Face Gear 4 Terminal Strip 13 Potentiometer Bracket 5 Actuator Shaft 14 Mounting Screws (2) 6 Potentiometer 15 Motor Support Plate 7 Potentiometer Bracket 16 Sna
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Depending on the control input used there are several options of the I-75 Interface: 25 and 3075 5V for 5 VDC input, XV for 12 VDC input, XX for 24 VDC input, 15 for 120 VAC input. These options are identified by the nameplate on the circuit board. 2. Indication and Repair: LED Indicators – Light emitting diodes marked LD1, LD2 are in input circuits and indicating what particular input is on.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 D. Extra Limit Switches (M1 or M2) 10-23 75 Assembly Shown 1. Setting: NOTE: Switches and cams are set at factory. If resetting is necessary, use the following procedure: a. Bring actuator into position desired to actuate extra switch. Turn extra cam in direction of normal travel until switch just throws. b. Advance cam in same direction by 1–3° and secure cam by tightening the set screw (4).
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 G. Heater and Thermostat NOTE: Heater and thermostat option requires no adjusting. If defects are found, notify factory. The thermostat will close/energize heater at ambient temperatures below 70°F. H. Drain/Breather (V53) Option (10-2375 Actuators) If actuator is equipped with drain/breather at bottom of base, actuator must be operated in an upright position for drain to operate properly. I. 4-75 Position Indicator 1.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Manual Operation IMPORTANT: Disconnect actuator from power supply. If power is not off, motor will start when cam moves from limit switch. A. 10-2375 W, X and Z: Pull the declutching knob all the way up and hold. Apply wrench to exposed flats on actuator shaft and rotate to desired position. To reengage, return shaft to original position of disengagement and release declutch knob. B.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Electrical Requirements The following table represents approximate current draw (at rated stall torques) in amp at various voltages for each motor. Actual values depend on several variables. For exact values, test the unit at a particular load. Actuator Size Suffix Code Duty Cycle Voltage 10 12 15 20 22 23 25 30 Blank 20% 120 AC — — 0.7 — — — — — Blank 25% 120 AC 0.7 0.7 — 1.5 1.5 — 2.7 3.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Electrical Schematics (Series 75) (Actuator shown in counter-clockwise extreme of travel, or “open” position.) NOTE: DC wiring diagram shown is for size 10, 20 and 23 actuators. For 12 and 22 sizes, the red/black motor leads are reversed. For G.P. Actuators only, terminal 6 is used for ground connection and L2 should be wired directly to N.O. Terminal of SW-2.
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04 Parts List Sizes 10-23 Note: Series 75 W is shown. Series 75 general purpose, X and Z units have different bases and covers.
X. STANDARD PUMP I&O MANUAL, MECHANICAL SEAL I&O MANUAL A. LAKOS supplies Scot Pumps on all of our standard STS system packages. The following manuals are for reference when servicing or repairing a Scot Pump. Please review these manuals before attempting any disassembly of the pump. LAKOS would highly recommend that any pump repairs by done by a certified pump repair service technician.
SCOT MOTORPUMP™ C56 & JM FRAME STRAIGHT CENTRIFUGAL 1.50” & 1.75” TYPE 21 MECHANICAL SEALS z INSTALLATION z OPERATION z MAINTENANCE INCLUDES MECHANICAL SEAL REPLACEMENT 1. INSPECTION Check pump for shortage and damage immediately upon arrival. Note damage or shortage on freight bill (bill of lading); immediately file claim with carrier. EXTERIOR — Pay particular attention to conduit box, external hardware and accessories. Touch up abrasions or scratches with approved paint.
INSTALLATION, CONT. 3. Install check and gate valves in discharge line; check valve (if used) between pump and gate valve. OPERATION Pre-Start — Before initial start of the pump, check as follows: 1. The rotation must be checked upon installation. Close, then break the contacts quickly and observe the rotation of the exposed portion of the rotating parts. Rotation must agree with the rotation arrow on the motor. For all pumps, the standard rotation is counterclockwise when viewed from the suction end.
8. Remove impeller from shaft, being careful not to lose the impeller key, spring and seal retainer. If impeller is difficult to remove, it may be necessary to use a bearing puller to pull off impeller. 9. Pry off rotating member of mechanical seal from sleeve by using two (2) screwdrivers. (Figure 2) spring on seal head and retainer on spring. 8. Place key in key seat. Line up keyway in impeller with key on motor shaft, and slide impeller on motor shaft.
STS MEDIA FILTER SYSTEMS START-UP FORM DATE OF START-UP: ___________________ COMPANY NAME: _______________________________________ ADDRESS: _______________________________________ _______________________________________ _______________________________________ PROJECT NAME/DESCRIPTION: ___________________________ _______________________________________________________ _______________________________________________________ CONTACT PERSON(S): ___________________________________ (Please include titles) _______
