Honeywell MV876B1018 F76S User's Manual
Contents
1. 40 47 47 9 17 hours 10 34 hours NOTE Cy is equal to capacity at 1 psi pressure drop 11 3 days 12 6 days 13 11 days 14 23 days 15 45 days 16 3 months 3 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS PLANNING THE INSTALLATION The F76S should be sized based on the required flow rate and the resulting pressure drop across the filter As a guideline for most applications the F76S should be sized to avoid pressure drops exceeding 3 psi EXAMPLE What size F76S is required to provide a flow rate of 30 gom Reading across Table 1 at 3 psi pressure drop a 1 in filter can provide 31 gpm without exceeding 3 psi pressure drop M16488 Fig 2a Ideal F76S installation A funnel mounted directly under the backwash port is the best installation layout M16491 Fig 2d Ensure the backwash outlet is not raised above the F76S If the backwash outlet must be raised above the F76S increase inlet pressure 5 psi for every 10 feet that it is raised Fig 2b Ensure the inlet pipe is not downsized Do not use 1 4 or 3 8 inch tubing on 1 2 or 3 4 inch models Fig 2e Ensure the F76S is not used with an undersized pump An undersized pump may not provide proper pressure or flow An increased pressure drop across the filter results when higher velocities are maintained to increase the capacity through any given size filter Severe pressure drops will be encountered as capacity appr2. b Automatic Backwash Install an MV876 Automatic Backwash Valve and select the backwash interval See the Operation section F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS b F76S DURING BACKWASH CYCLE a F76S DURING NORMAL FLOW BACKWASH IMPELLER SCREEN ENLARGED CROSS SECTION ENLARGED CROSS SECTION DEBRIS AND SEDIMENT M17362 Fig 12 Water flow through the F76S 4 62 3015 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS F76S REPLACEMENT PARTS LIST SEE FIG 13 PARTS AND ACCESSORIES FOR NEW STYLE F76S FILTERS Description 1 2 inch 3 4 inch 1 inch 1 1 4 inch 1 1 2 inch 2 inch A Pressure Gauge new style F76S only Standard Pressure 230 psi M76K 200 M76K 200 M76K 200 M76K 200 M76K 200 M76K 200 High Pressure 400 psi M76K 400 M76K 400 M76K 400 M76K 400 M76K 400 M76K 400 B Tailpieces same for new and old style Sweat U76S5007 U76S5015 U76S5023 U76S5031 U76S5039 U76S5047 Threaded shown U76T1004 U76T1014 U76T1022 U76T1030 U76T1038 U76T1046 C Union Nuts N A N A N A N A N A N A D Tailpiece Gaskets sold in packs of 10 0901444 0901444 10901445 0901446 0901447 0901448 E Guide Barrel N A N A N A N A N A N A Screen Insert Complete new style only 20 Micron AF11S 1B AF11S 1B AF11S 1B AF11S 1B AF11S 112B AF11S 112B 50 Micron AF11S 1C AF11S 1C AF11S 1C AF11S 1C AF11S 112C AF11S 1
3. 12C 100 Micron AF11S 1A AF11S 1A AF11S 1A AF11S 1A AF11S 112A AF11S 112A 200 Micron AF11S 1D AF11S 1D AF11S 1D AF11S 1D AF11S 112D AF11S 112D Includes F Barrel O Ring G Impeller and Screen Assembly J Chamber O Ring H Base Spring N A N A N A N A N A N A J Chamber O Ring sold in packs of 10 0900747 10900747 0900747 0900747 0900748 0900748 Filter Sump Kits new style only Clear Plastic KF11S 1A KF11S 1A KF11S 1A KF11S 1A KF11S 112A KF11S 112A Bronze FTO9RS 1A FTO9RS 1A FTO9RS 1A FTO9RS 1A FTO9RS 112A FTO9RS 112A Includes J Chamber O Ring K Sump L Ball Valve O Ring M Integrated Ball Valve N Memory Ring P Ball Valve Bowl Q Ball Valve Knob R Joint Ring Seal S Drain Connector Ball Valve Assembly new style only KH11S 1A KH11S 1A KH11S 1A KH11S 1A KH11S 1A KH11S 1A Includes M Ball Valve L Ball Valve O Ring Sump Wrench ZR10K 34 ZR10K 34 ZR10K 1 ZR10K 1 ZR10K 112 ZR10K 112 N A Part number not available at time of printing 4 Sold in packs of ten 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS f 2 N E ge i Q 68y yt nz Fig 13 F76S exploded view Parts are keyed to F76S Replacement Parts List F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS F76A G REPLACEMENT PARTS LIST SEE FIG 14 Description 1 2 inch 3 4 inch 1 inch 1 1
4. 4 inch 1 1 2 inch 2 inch A Pressure Gauge F76A 8 F76B 0901537 0901537 0901537 0901537 0901537 0901537 F76G 8 F76H 5267400 5267400 5267400 5267400 5267400 5267400 B Tailpieces for new and old style Sweat U76S5007 U76S5015 U76S5023 U76S5031 U76S5039 U76S5047 Threaded shown U76T1004 U76T1014 U76T1022 U76T1030 U76T1038 U76T1046 C Union Nuts N A N A N A N A N A N A E Ring plastic N A N A N A N A N A N A Screen Kit 20 Micron QF76Q2007 QF76Q2007 QF76Q2015 QF76Q2015 QF76Q2023 QF76Q2023 50 Micron QF76R2030 QF76R2030 QF76R2038 QF76R2038 QF76R2046 QF76R2046 100 Micron QF76S2051 QF76S2051 QF76S2059 QF76S2059 QF76S2067 QF76S2067 200 Micron QF76T2074 QF76T2074 QF76T2082 QF76T2082 QF76T2090 QF76T2090 Includes F Upper Screen H Barrel O Ring L Lower Screen Internal Seal Kit N A N A N A N A N A N A Includes H Barrel O Ring K Screen Seal Q Chamber O Ring S Joint Ring Seal Filter Insert Kit QF76G2053 QF76G2053 QF76G2061 QF76G2061 QF76G2069 QF76G2069 F Upper Screen G Upper Guide Barrel H Barrel O Ring J Lower Guide Barrel K Screen Seal L Lower Screen M Impeller N Lower Screen Support P Conical Base Spring Q Chamber O Ring Filter Sump Kits Clear Plastic PF76C1007 PF76C1007 PF76C1015 PF76C1015 PF76C1023 PF76C1023P Bronze 202913 202913 202914 202914 202915 202915 Includes Q Chamber O Ring R Sump S Joint Ring Seal T Drain Tap
5. Backwash Outlet U Red Handle and Screw U Red Handle and Screw 251550 251550 251550 251550 251550 251550 Sump Wrench ZR10K 12 ZR10K 12 ZR10K 1 ZR10K 1 ZR10K 112 ZR10K 112 N A Part number not available at time of printing 2Sold in packs of ten bPF76C1023 does not include drain tap and red handle and screw 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS Fig 14 F76A G exploded view Parts are keyed to F76A G Replacement Parts List 62 3015 4 14 15 62 3015 4 Honeywell Home and Building Control Honeywell Inc Honeywell Plaza P O Box 524 Minneapolis MN 55408 0524 62 3015 4 B B Rev 10 99 Home and Building Control Honeywell Limited Honeywell Limit e 155 Gordon Baker Road North York Ontario M2H 3N7 Printed in U S A on recycled amp paper containing at least 10 post consumer paper fibers Braukmann www honeywell com www honeywell ca braukmann
6. Honeywell Braukmann F76S Water Filters and MV876B Automatic Backwash Controls MV876B1018 Bayonet fitting for F76S MV876B1000 for F76A G APPLICATION The F76S is a high flow capacity water filter used at point of entry POE to remove sediment and debris from residential or commercial water systems Used as a prefilter the F76S protects elements of the water system including specialized treatment devices such as taste odor or reverse osmosis R O or other common fixtures and appliances The flow filtering capacity and ease of cleaning make the F76S the ideal filter for the most demanding applications The MV876 Automatic Backwash Control is available as an accessory This control is fitted to the drain valve and is programmed by the user to automatically perform the back wash function according to the desired interval U S Registered Trademark Copyright 1999 Honeywell Inc All Rights Reserved ce PRODUCT DATA FEATURES F76 Built in backwash impeller provides efficient cleaning with supply pressures as low as 22 psi Increased flow capacity on 1 2 in to 1 1 4 in models provides lower pressure drop Robust backwash mechanism No shut off or disassembly is required for cleaning During backwash the F76S continues to supply filtered water without interruption through a secondary screen Memory ring indicates when the next manual backwash is due MV876 MV876B1018 bayone
7. e 20 seconds approximate Timer Variable See Table 2 Accessories for F76S only except where noted 0900747 Sump O Ring Kit 10 O rings for 1 2 to 1 1 4 in F76S 0900748 Sump O Ring Kit 10 O rings for 1 1 2 to 2 in F76S 0901444 Gasket Package 10 gaskets for any 1 2 in and 3 4 in F76 0901445 Gasket Package 10 gaskets for any 1 in F76 0901446 Gasket Package 10 gaskets for any 1 1 4 in F76 0901447 Gasket Package 10 gaskets for any 1 1 2 in F76 0901448 Gasket Package 10 gaskets for any 2 in F76 AF11S 1A Screen insert 100 microns for 1 2 to 1 1 4 in F76S AF11S 112A Screen insert 100 microns for 1 1 2 to 2 in F76S AF11S 1B Screen insert 20 microns for 1 2 to 1 1 4 in F76S AF11S 112B Screen insert 20 microns for 1 1 2 to 2 in F76S AF11S 1C Screen insert 50 microns for 1 2 to 1 1 4 in F76S When purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the TRADELINE Catalog or price sheets for complete ordering number If you have additional questions need further information or would like to comment on our products or services please write or phone 1 Your local Home and Building Control Sales Office check white pages of your phone directory 2 Home and Building Control Customer Logistics Honeywell Inc 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 612 951 1000 In Canada Honeywell Limited Honeywell Limit e 155 Gord
8. g 7 Installing the MV876B on the F76A Set Pressure Gauge Needles The black needle on the pressure gauge measures the F76S outlet pressure When the F76S is running with clean screens there is a small pressure drop across the F76S 3 psi at maximum recommended flow The red needle is a stationary needle that helps monitor back wash interval NOTE The following assumes a constant inlet pressure If inlet pressure is variable another gauge on the inlet piping or the air vent will provide more information regarding actual pressure differential 1 Backwash F76S once to ensure the screens are clean 2 With the F76S in operation rotate the clear gauge cover to set the red needle to match the black needle F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS As the F76S operates screens become plugged Backwash the F76S when the black needle measures about five psi lower than the red needle However each installation is different Residential applications can require backwash only once a week or once every few weeks Industrial applications can require backwash several times a day To determine the backwash interval see Determining Backwash Interval in the Operation section Insert a new 800 mA fuse see Fig 10 Replace the cover Replace and tighten the four housing screws Reconnect the power supply NONA NOTE For residential applications backwash the F76S once a week regardless of need is an excellent
9. guideline to follow to ensure F76S peak operating efficiency Fitting Batteries and Fuses The batteries not included provide power to the MV876 in the event of a power loss This is desirable especially when power loss occurs during the reverse rinsing cycle To provide this the MV876 requires four AA alkaline batteries Install these batteries in the cover of the MV876 AN CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect power supply before installation 1 Unscrew the four housing screws and set them aside see Fig 8 IMPORTANT Ensure that the connecting cable is protected from damage while the MV876 cover is loose 2 Remove the MV876 cover see Fig 8 3 Insert four AA alkaline batteries see Fig 9 4 Replace the cover 5 Replace and tighten the four housing screws NOTES 1 To avoid unnecessary battery drainage connect the MV876 to power as soon as possible after inserting new batteries 2 To ensure the availability of battery power replace the batteries after a power loss If the 800 mA fuse blows replace it AN CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect power supply before installation 1 Unscrew the four housing screws and set them aside see Fig 8 IMPORTANT Ensure that the connecting cable is protected from damage while the MV876 cover is lo
10. h PTFE Seals Sump Engineered Plastic NOTE Bronze sump available Inlet Pressure Minimum 22 psi with unrestricted backwash discharge Maximum Plastic Sump 232 psi Bronze Sump 400 psi NOTE Pressures above 200 psi require an inlet pressure gauge with a range wider than the standard Differential Maximum Recommended 42 psi Operating Pressure Drop Maximum Recommended 3 psi with clean screen Temperature maximum Plastic Sump 104 F 40 C Bronze Sump 158 F 70 C Pipe Sizes in in 1 2 3 4 1 1 1 4 1 1 2 and 2 Connections Union on inlet and outlet External NPT threaded or sweat ORDERING INFORMATION Capacity See Table 1 Screen Sizes Shipped with Device 100 microns Available Kits 20 50 and 200 microns NOTE 20 microns 900 mesh approximate 50 microns 350 mesh approximate 100 microns 175 mesh approximate 200 microns 70 mesh approximate MV876 Automatic Backwash Controls Models MV876B1000 Valve with 24 Vac motor and timer replaces ball valve drain port for automatic backwash at preprogrammed intervals 24V transformer not included For use with F76A G Filters only MV876B1018 Bayonet mounted shaft of 24 Vac motor and timer replaces ball valve manual control for automatic backwash at preprogrammed intervals 24V transformer not included For use with F76S Filters only Specifications Power 4 VA Current 170 mA Voltage 24 Vac Cycle tim
11. l Installation on an F76S 1 Open the backwash outlet ball valve 2 Remove the backwash outlet handle 3 Install the MV876 See Fig 5 and 6 NOTE When you rotate the MV876 it closes the backwash outlet ball valve 4 Ensure the F76S air vent is open 5 Slowly open the water supply valve 6 Once the F76S sump fills with water close the air vent and fully open the water supply valve 7 Program the desired backwash interval by pushing the program button until the desired interval number appears in the display 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS M16481 Fig 5 Installing the MV876 M16483 Fig 6 Final position of MV876 and F76S components Installation on an F76A 1 Close the water supply valve to shut off water supply 2 Drain all water from the F76A by opening both a fixture downstream and the backwash outlet loosen the air vent on top of the F76A 3 Remove the backwash outlet see Fig 7 a Grip the F76A fixture with a wrench b Using another wrench turn the outlet counterclockwise N viewed from the bottom 4 Connect the MV876 to the F76A see Fig 7 a Ensure a plastic washer is placed between the filter sump and the backwash outlet b Connect the externally threaded portion of the MV876 backwash outlet to the internally threaded F76A connection 5 Connect the hose fitting to the MV876 backwash outlet see Fig 7 62 3015 4 6 Fi
12. llel installation Increased cleaning capacity Backwash interval is reduced Elimination of system downtime Can backwash one F76S while the others maintain required flow Another consideration in commercial and industrial installations is the backwash interval Because of the high flow requirements screens need cleaning on a regular basis An MV876 Automatic Backwash Control can be installed to back wash the F76S automatically INSTALLATION AN CAUTION Equipment Damage Hazard Excessive pressure or temperature can damage the device Ensure water temperature and pressure are below maximum ratings specified AN CAUTION Equipment Damage Hazard Excessive heating can damage internal parts Before sweating separate the tailpieces and nuts from the filter body F76S When installing an F76S use the following procedure 1 Shut off water supply by closing the water supply valve 2 Install the F76S in the water line with the arrow pointing in the direction of water flow 3 Install pressure gauge in the F76S center port see Fig 4 IMPORTANT When using an MV876 stop here and install the MV876 4 Ensure the F76S air vent is open 5 Slowly open the water supply valve 6 Once the F76S sump fills with water close the air vent and fully open the water supply valve M16480 Fig 4 Installing the F76S MV876 When adding an MV876 to an existing F76 the procedure can vary depending on the F76 mode
13. n See Fig 12a With continued operation the lower screen becomes obstructed reducing efficiency and creating a pressure drop across the F76S Backwash the F76S periodically Suggested interval is either once per week residential applications or when the black needle measures about five psi lower than the red needle To backwash the F76S manually open the backwash outlet on the F76S bottom This forces the entire filter insert down wards Water flow to the lower screen outer side is blocked The upper filter removes sediment and debris from the water 62 3015 4 8 While the upper screen filters the water Some of the water passing through the upper screen is directed through the impeller to backwash the lower screen from inside to out side Remaining filtered water meets the needs downstream Water jets from the rapidly spinning impeller enhance the reversed water flow The reverse flow removes trapped sediment and debris from the lower filter This sediment drains out the backwash outlet Cleaning the lower screen requires approximately 20 seconds See Fig 12b The F76S requires no maintenance if backwashed at the proper interval Determining Backwash Interval All F76S applications are different and require backwashing at different intervals Backwash interval is directly proportional to The level and type of sediment in the local water supply Water usage EXAMPLE In northern states water usage is higher i
14. n summer months than in winter months due to lawn watering in the summer Therefore the F76S should be backwashed more often in summer months than in winter months By accurately determining a proper backwash interval the F76S will operate at a higher efficiency To determine the F76S backwash interval 1 Backwash the system once to ensure the lower screen is clean 2 The black pressure gauge needle measures outlet pressure With clean screens inlet pressure equals outlet pressure because of negligible pressure drop across the F76S 3 Rotate the clear gauge cover to set the red needle to match the black needle 4 Record the date and time 5 Monitor the F76S closely Over time the screens become obstructed and outlet pressure drops NOTE The F76S requires a backwash when the black needle measures about five psi lower than the red needle Installations do vary and can require a backwash at different times 6 Record date and time again Residential applications can require an F76S backwash only once every few weeks to once per week Industrial applications can require an F76S backwash several times a day 7 Backwash the F76S regularly at the determined interval A backwash can be done manually or automatically a Manual Backwash Open the backwash outlet for approximately 30 seconds NOTE The amount of time required varies among installations However 30 seconds is the standard guideline to clean the lower screen
15. oaches that of the pipe size To ensure the backwash cycle operates properly and cleaning action is not reduced follow all recommendations in Fig 2 Refer to Fig 2a for an ideal installation NOTE All filter installations are different The size type and amount of dirt and debris and the flow rate must always be considered when choosing a screen and deciding to install multiple F76 Water Filters in parallel M16489 M16490 Fig 2c Ensure the backwash outlet pipe is not downsized long or crimped Instead install a short oversized pipe on the backwash outlet Do not use a low capacity solenoid valve to automate the backwash cycle M16492 M16478 Fig 2f Ensure the F76S is not installed in a bypass across a pump Fig 2 Installation recommendations 62 3015 4 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS Commercial and Industrial Installations 1 1 2 and 2 in models Commercial and industrial installations have high flow requirements For proper operation limit flow across the F76S screen For example a two inch pipe may have a 120 gpm flow at 12 fps linear velocity across a clean screen High linear velocity impacts dirt deeply into the screen making it difficult to backwash and causing the screen to plug up quickly In these situations install multiple F76 filters in parallel See Fig 3 M17360 Fig 3 Parallel installation of three F76S Water Filters Advantages of para
16. on Baker Road North York Ontario M2H 3N7 International Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS Accessories continued AF11S 112C Screen insert 50 microns for 1 1 2 to 2 in F76S U76S5031 Sweat Tailpiece for any 1 1 4 in F76 AF11S 1D Screen insert 200 microns for 1 2 to 1 1 4 in F76S U76S5039 Sweat Tailpiece for any 1 1 2 in F76 AF11S 112D Screen insert 200 microns for 1 1 2 to 2 in F76S U76S5047 Sweat Tailpiece for any 2 in F76 KF11S 1A Clear Plastic Filter Sump Kit for 1 2 to 1 1 4 in F76S U76T1004 Threaded Tailpiece for any 1 2 in F76 KF11S 112A Clear Plastic Filter Sump Kit for 1 1 2 to 2 in F76S U76T1014 Threaded Tailpiece for any 3 4 in F76 FTO9RS 1A Bronze Filter Sump Kit for 1 2 to 1 1 4 in F76S U76T1022 Threaded Tailpiece for any 1 in F76 FTO9RS 112A Bronze Filter Sump Kit for 1 1 2 to 2 in F76S U76T1030 Threaded Tailpiece for any 1 1 4 in F76 KH11S 1A Ball Valve Assembly for 1 2 to 2 in F76S U76T1038 Threaded Tailpiece for any 1 1 2 in F76 M76K 200 Pressure Gauge 200 psi maximum U76T1046 Threaded Tailpiece for any 2 in F76 M76K 400 Pressure Gauge 400 psi maximum ZR10K 1 Sump Wrench for any 1 in or 1 1 4 in F76 U76S5007 Sweat Tailpiece for any 1 2 in F76 ZR10K 112 Sump W
17. ose M17351 2 Remove the MV876 cover see Fig 8 3 Remove and discard the old fuse see Fig 10 Fig 10 Replacing the MV876 fuse 7 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS WIRING CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect power supply before installation IMPORTANT All wiring must comply with applicable codes and ordinances MV876 1 Mount the AT140A1034 Transformer and wire as shown in Fig 11 Ensure the F76 air vent is open Slowly open the water supply valve Once the F76 sump fills with water close the air vent and fully open the supply valve Reconnect power to the system When the system is powered the MV876 will run through one backwash cycle approximately 20 seconds Set MV876 backwash interval to the desired setting See the Operation section 7 Check MV876 operation by interrupting primary power to the transformer When power is switched back on the MV876 will backwash the F76 once nn pan gt i HOT L2 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M16484 Fig 11 Wiring diagram for F76 with MV876 OPERATION The F76S Water Filter removes sediment and debris from the water using an upper and lower screen During normal operation no water passes through the upper screen Water is filtered as it flows through the lower scree
18. rench for any 1 1 2 in or 2 in F76 U76S5015 Sweat Tailpiece for any 3 4 in F76 ZR10K 12 Sump Wrench for 1 2 in and 3 4 in F76A G U76S5023 Sweat Tailpiece for any 1 in F76 ZR10K 34 Sump Wrench for 1 2 in and 3 4 in F76S WEIGHT 1 2 INCH 6 11 16 170 4 5 16 110 3 13 16 97 17 11 16 449 13 13 16 350 3 4 INCH 7 178 4 5 16 110 3 13 16 97 17 11 16 449 13 13 16 350 1 INCH 8 1 4 209 5 1 8 130 3 13 16 97 17 7 8 453 13 13 16 350 1 1 4 INCH 8 3 4 222 5 1 8 130 3 13 16 97 17 7 8 453 13 13 16 350 1 1 2 INCH 9 11 16 246 5 15 16 150 4 3 4 119 20 15 16 532 16 7 16 417 2 IINCH 10 1 2 267 5 15 16 150 4 3 4 119 20 15 16 532 16 7 16 417 ZN DIMENSIONS IN INCHES AND MILLIMETERS A weicht IN POUNDS AND KILOGRAMS M18084 Fig 1 F76S Dimensions Table 1 Capacity in Gallons Per Minute gpm Table 2 MV876B Timer Selections Pressure Drop Pipe Size in Program Value Backwash Interval psi Across Filter 1 2 34 1 1 1 4 1 12 2 1 4 minutes 1 8 11 18 20 26 30 2 8 minutes 2 12 16 25 28 36 42 3 16 minutes 3 14 19 31 35 44 51 4 32 minutes 4 16 22 36 40 51 59 5 1 hour 5 18 25 40 45 57 66 6 2 hours 15 32 43 70 78 99 114 7 4 hours Flow Volume for 15 sec backwash at 60 psi inlet 8 8 hours 3 2 3 2 40
19. t fitting simplifies upgrade to automatic backwash 16 field selectable backwash intervals from every four minutes to once every three months on the MV876B eliminate need for external timer Connections for external control on the MV876B provide for use in automated systems and differential pressure control MV876B can be turned manually to initiate backwash Battery AA backup to insure completion of backwash cycle in spite of power loss Contents Application wae aint dt 1 Features u naeh 1 Specifications un 2 Ordering Information ceecececceeseeeeeeeeeeeeeeeneeeseeeeeeessaes 2 Planning the Installation oeeie 4 Installation cotillon 5 WinNg anat lada 8 Opel iii samen 8 F76S Replacement Parts List nennen 10 F76A G Replacement Parts List 0uu een 12 62 3015 4 F76S WATER FILTERS AND MV876B AUTOMATIC BACKWASH CONTROLS SPECIFICATIONS F76S Models Water filters with 100 micron screens and hose connections F76S1007 1 2 in sweat and NPT threaded tailpieces F76S1015 3 4 in sweat and NPT threaded tailpieces F76S1023 1 in sweat and NPT threaded tailpieces F76S1031 1 1 4 in sweat and NPT threaded tailpieces F76S1049 1 1 2 in NPT threaded tailpieces F76S1056 2 in NPT threaded tailpieces Dimensions See Fig 1 Materials of Construction Body Brass Screen Stainless Steel Internal Construction Acetal Copolymer Seals NBR Ball Valve Brass wit
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