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Allow a 2"minimum clea,,W:e between the top of the piping sump and F9. Electrical Connections the bottom of the concrete pad.Backfill to the top of the piping sump,then place compressible foam board(48"L maximum x 48"W maximum x The 1"NPT electrical couplings are field-installed using a grommet for a 2"thick—or equivalent layers)on top of the piping sump.The 9"thick "water-tight"seal.Each piping sump(PS Model only)includes four concrete traffic slab can be poured directly onto the compressible foam threaded couplings,4 grommets,and one hole saw blade. board.However,the concrete must not come Into direct contact 1 Warning:OIC Tanks recommends the use of pneumatic tools.Do with the piping sump.Styrofoam or urethane foam sheathing may be Warnin :OIClect c power whereheuse bleva used for the compressible board(contractor supplied);the minimum not usepo pors or liquids length and width of the compressible board is 42". 1.., exist.Move the piping sump to a safe area prior to drilling with elect trityl tools if flammable vapors or liquids exist.When drilling,be As an alternate to the compressible board.a 480 diameter riser(12"long) sure to wear gloves and eye protection. can be used to isolate the piping sump from the traffic slab.Allow a 6" Use the 2"diameter carbide ti rminimum clearance between the bottom of the riser and top of the double electrical coupling entry holes int a hole saw blade side of the piping sump.The hole to drill the wall pipe- should be dean cut with defined edges.Any chipping or irregularities in the hole are potential sources of leaks.After the hole is cut,insert the F12. Air Testing Model Series SPS grommet;the fit should be easy but not sloppy.The grommet must be in 9 place before the 1"coupling is inserted. Only) To install the 10 NPT coupling provided with the grommet,use a lubricant For Model series SPS sumps,the air test mus[not exceed 5 psi. such as soapy water on the metal coupling and on the bore of the grommet.Atter lubricating,insert the coupling into the grommet from the Monitor the pressure for at least 30 minutes.While under pressure,soap grommet side with the larger diameter.As the coupling is pushed into the pi ping sump and check for leaks as indicated by soap bubbles. position,the 0.D.of the grommet expands and seals the entry hole.The coupling should be inserted at least 1"and should extend out at least 1". If the coupling is inserted too far,pulling it out requires more force than F13" Traffic Slab - insertion,regwring lubricant.The coupling should be aligned square to the piping sump although the grommet will accept some misalignment Modelsenes PSpiping sumps can be accessed through a 240 street without losing its seal. box;model series SPS sumps require a 30"street box. Piping sump model SPS is to be air tested after the electrical connections Traffic areas require a rebar reinforced concrete road surface to span the are made.Use seal-off fittings to make connections air tight. underground void created by the piping sump. F10. Monitoring F14. Piping Sump Sensor The piping sump can be equipped at thejobsite with an optional monitor to detect the presence of liquid in the piping sump.The monitoring sensor momPpiryP s Secs« Tofuwiori ox should be placed in a protective casing,which has been perforated.The casing is fastened to the sensor mounting bracket on the side of the pip Lead WFe 7z•mh. Ing sump using a mounting clam p. The optional O/C Tanks factory supplied pipe sump sensor is already 7V rod mounted inside a plastic casing and is supplied with the mounting damp. If the monitoring sensor detects liquid in the piping sump,O/C Tanks �Orr'g aarnp recommends that the power on the submersible pump be disconnected. This can be performed automatically by providing an electrical feedback noun;; {! circuit from the monitoring system to disengage the submersible pump. eracketg (See Section D4:Transmission Contact Switch.) StaY,less steel F11. Backfilling and Clearances After completing all piping and electrical connections,the top and bottom �o a o- R•tonded blastic casng halves of the piping sump are cemented together.Clean thejoint area to insure maximum bonding strength.Use the two-part adhesive supplied by the fiberglass pipe vendor.Apply a generous amount of mixed adhesive to both the bottom and the top joint.Place the top half into posi- tion and press down to squeeze out the excessive adhesive.Follow other Usingthe supplied mounting clamp,mount the pi ping sump sensor on installation instructions provided by the adhesive manufacturer. the sensor mounting bracket.For maximum sensitivity,the sensor must Hand place gravel around and under the bottom of the piping sump. rest on the bottom of the pi ping sump. The piping sump must be isolated from direct traffic loading. The float switch is activated after 2"ofliquid has accumulated inthe bot- tom of the piping sump—approximately 12 gallons of liquid.To improve the sump sensor sensitivity,add 2"of gravel to the bottom of the piping sump.With gravel,the sensor is activated by approximately 5 gallons of a°"101"°`'O1OB1B•- Recoiiiei0ed 5i1aah1v2-Y liquid.if ravel is used in the sum bottom,wrap the sum sensor sides s rear e•«eonx rs Pa:,a s,.m Model Psa2-226 shown q 9 P P P e.bar nm r,.menw,a and bottom with filter fabric to prevent small stones or grit from entering stew wad,e000,w x•m.weor- e• the sensor casing. eerri,x,xe a,c« v The piping sump sensor can be wired directly to the O/C Tanks supplied electronic control panel or can be indirectly wired to the control panel ;2 3•m•man p ' using an optional switch panel.For intrinsically safe wiring,use 16 AWG or 14 AWG type THHN or type MTW(contractor supplied)and NEMA-4 -�$ junction boxes.All electrical connections must be in accordance with C-Lx Wxz e xbwn eoaC ;* +y local and national electrical codes. �. aa•Lxae•w � TSxr '� After the sensor is installed and connected to ano g p parotin control anal, eoit wthe sensor can be tested by lifting the trip rod located on the top of the sensor. b" r+xn +ee3Y .' For details of wiring the Model PSS sensor see Figures D and E. wsn ya.x v,0ervnD Dopom Ma^waYcwarxiN N6gs -- _ F15. Maintenance Nae:Sera«ring must ee in water eghl conduit and iunalon boxes.Keep lntnnsrally sale U se cautio n for norma l ma intenance or inspection of the su bmersk wings arate if=n ,ntnn=aiiy satewnng. ble pump and piping located 1n the piping sum p.. WARNING:FUEL VAPORS MAY BE PRESENT IN THE PIPING SUMP.KEEP ALL IGNITION SOURCES AWAY WHEN REMOVING THE PIPING SUMP LID. 1.3