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 3 INSTALLATION 

O

verview of

Use

 

Location of the Day Tank is of prime importance and 
should be done by trained personnel. It is one of the 
most critical factors involved in reliable and safe 
operation. The Day Tank must be positioned and 
installed according to the main fuel storage tank and 
engine location. In general, locate the Day Tank as close 
to the engine as possible consistent with applicable local 
and national plumbing and electrical codes. Always 
position the Day Tank so that the highest fuel level in the 
tank is lower than the engine injectors. The Day Tank 
must be located not farther than 200' from the main fuel 
tank. The Day Tank must not be more than 18' higher 
than the lowest fuel level in the main fuel tank. Never 
locate the Day Tank in a confined space without 
consideration for accidental fuel spillage and use a 
rupture basin when necessary. Never locate the Day 
Tank near a surface or object which may be adversely 
affected by fuel oil. Never locate a Day Tank system 
above a residential living space. 

See dimensional drawing for port sizes. All plumbing to 
and from the Day Tank should be black iron pipe or copper 
tubing. All plumbing connections at the tank should be 
made with pipe unions to facilitate installation and service. 
Special attention must be given to pump suction pipe 
connections to avoid possible air leaks and subsequent loss 
of pump prime. Never allow the Day Tank pump to run 

“dry” as immediate pump dam

age will occur. Before 

applying power to the pump/motor be sure all fuel 
connections have been made and tightened and all holes are 
plugged. Option 010 or 015, auxiliary hand pump, is 
recommended for installation on all Day Tanks with motor-
pumps. The hand pump is used for initial priming of the 
fuel line from the main tank and as a back up to the motor 
pump. 

If  you  have  any  questions  regarding  Day  Tank 
installation,  call  Simplex  service  at  (800)  637-8603 
(24 hrs.).

 

5

Summary of Contents for STS DAY TANK

Page 1: ...STS DAY TANK PACKAGED DAY TANK SYSTEMS...

Page 2: ...Last Revision Date September 20 2018 For the most up to date information for this product and others please contact Simplex Inc at 800 637 8603 or visit us on the web at http www simplexdirect com...

Page 3: ...uplex Pump Controller Option 345 16 Overflow Return Tank Option 383 17 Overflow Return Pump Controller Added to Day Tank Option 390 18 5 Maintenance 19 Each Year 19 After the First Three Years 19 6 Tr...

Page 4: ...th bare wires terminals connections etc on the hardware if applicable Ensure all appropriate covers guards grounds and barriers are in place before operating the equip ment If work must be done around...

Page 5: ...ard to free the victim from the live conductor If the victim is unconscious apply first aid and seek immediate medical attention Never wear jewelry when working on this equipment Jewel ry can conduct...

Page 6: ...2 NAMEPLATES AND PLACARDS Nameplates and Placards 3 3...

Page 7: ...4 Nameplates and Placards 4...

Page 8: ...necessary Never locate the Day Tank near a surface or object which may be adversely affected by fuel oil Never locate a Day Tank system above a residential living space See dimensional drawing for po...

Page 9: ...higher than any other pipe and should terminate outdoors The vent pipe must be installed per local building codes and per NFPA 30 including but not limited to Section 19 5 3 There should be no low por...

Page 10: ...mensional drawing in this manual Attach the Engine Return Line This is an NPT internal connection Use black pipe with a union and size per the installation drawing in this manual 5 Attach the Engine R...

Page 11: ...omatic position Ensure that fuel is exiting the pump by watching the clear pump outlet tubing If not repeat this procedure and prime the pump also at the pump priming tee Make sure all unused Day Tank...

Page 12: ...ng power as well as assuring proper operation Tobring cabling into the SmartFilter pull a hole into the cabinetintheConduitEntryArea see andinstalla 3R rated conduit connector for access To install co...

Page 13: ...piece of pipe in the pump priming tee and attach a reducing coupler or funnel 2 Fill the line from the check valve to the pump with fuel oil or lube oil Energize the pump motor and observe fuel flowin...

Page 14: ...following serviceable components motor starting contactor and control fuses Control fuses are 2A 250VAC ABC type and the standard motor starting contactor is a double pole 24VDC coil rated at 20A The...

Page 15: ...ly flashing lamp on the control panel Normally the mode selector switch is left in the automatic position After initial Day Tank installation priming and fill the controller printed circuit board will...

Page 16: ...13...

Page 17: ...is initiated while in Automatic Mode the Day Tank will continue to operate normally and cycle from 50 to 90 but the High Level L E D will remain illuminated until it is reset When the High Level mode...

Page 18: ...maximum For manual continuous run operation the Day Tank operator must place the Day Tank mode selector toggle switch in the Manual position Manual operation allows the Day Tank operator to energize a...

Page 19: ...drop in fuel level below 50 and starts the lag pump which then continues to run along with the lead pump until the tank is full Multi function duplex pump controller system providing selectable opera...

Page 20: ...l returns to the 90 fuel level Operation The control switch should normally be in the Auto position and the Power Available L E D should be illuminated The level controller is set to pump the tank to...

Page 21: ...ow alarm circuit and will operate as described below Above 70 level float switch closes and arms the overflow return controller illuminating the overflow return armed indicator and enabling the overfl...

Page 22: ...ned and refilled with fresh fuel 2 Remove the inspection port from the Day Tank The port is shown in the illustration below Examine the interior of the Day Tank Using an inspection lamp examine all in...

Page 23: ...t or grit in fuel 2 Pipe strain on pump causing bind 3 Worn pump motor coupler 4 Pump has been run dry or with insufficient fuel 1 Leak at inlet 2 End of inlet not deep enough 3 Air or gas in fuel 4 S...

Page 24: ...cavitation 5 Plumbing air leaks 6 Lift too high 7 Pump seals leaking 1 Control power not available 2 Motor thermal overload condition 3 Pump failed and seized 4 Motor failure 1 Loose pump plumbing fit...

Page 25: ...bers for your Fuel Supply System When ordering replacement parts always consult the Parts Legend When contacting the Simplex Service Department always have your sales order number and drawing number r...

Page 26: ...Technical Data 23...

Page 27: ...24...

Page 28: ...ybuyerforinclusioninfinishedequipmentarenotcoveredby this warranty g components or assemblies specified by buyer with no substitution permissible that are not normally used by SIMPLEX SIMPLEX reserves...

Page 29: ...ide solutions meeting exact requirements from the simplest testing and proving equipment for backup generators to custom designed and engineered mission critical fuel systems At Simplex we are experts...

Page 30: ...o Montana Nevada Utah and Wyoming GEORGIA Serving Alabama Florida Georgia North Carolina and South Carolina ILLINOIS Serving Illinois Indiana Kentucky Michigan Missouri and Tennessee MASSACHUSETTS Ser...

Page 31: ...Simplex Inc 5300 Rising Moon Road Springfield IL 62711 6228 2100 Boggs Road Duluth GA 30096 4691 800 637 8603 www simplexdirect com...

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