Honeywell Sleep Apnea Machine L404A D Users Manual 4b Pressuretrol
L404A-D to the manual 5dac9070-5b9e-4c2d-afcb-bf8177f575e8
2015-01-23
: Honeywell Honeywell-Honeywell-Sleep-Apnea-Machine-L404A-D-Users-Manual-261816 honeywell-honeywell-sleep-apnea-machine-l404a-d-users-manual-261816 honeywell pdf
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Honeywell L404A LM L604A F D Pressuretrol@ Controllers IA04 and L604 PressuretrofFJ trollers Con are li7Jevoltage pressure controllers thatprovide oper control automatic limitprotection ormanual ating limit protection forpressure systems 300 psi 21 1 kglcm2 or 2068 kpa reset of up to I I i i I Ii Can be used with steam air non combustible gases or fluids non corrosive to the pressure sensing ele Screw adjustments made top of case English psi and Metric ment Scaleplates marked kgcm2 units Stainless steel diaphragm except 300 psi 211 kg cm2 2068 kPa models also allows use with monia oxygen distilled water and similar media lA04F models available with pean enclosure Euro British Standard Pipe Threads ground screw and scaleplates marked in kglcm2 and either psi or kPa IA04B is recommended for supervision of atomiz ing medium pressure oil burner systems Clear plastic cover on case to observe pressure set tings and switch action Models ing available with spst spdt or dpst switch variety ofoperating ranges are and in trouble free mercury switches all mod els except lA04F which has snap acting switch Dustproof Automatic reset models have differential except L604M adjustable subtractive in on Leveling indicator visible through cover Hexagonal fitting with for direct mounting to loop 1 4 18 NPT internal 14026 Steam Trap Surface mount is available holes knockouts in case using backing screws eads SIphon through free mechanism on manual reset models as that limit function of controller cannot be defeated by jamming reset lever Trip sures CONTENTS I L Z Rev 3 95 @Honeywelllnc 1995 Specifications 2 Ordering1nformation 2 Installation 5 Setting and Service Information Checkout 8 10 11111111111111111 I 04A D F L604A L M JECIFICATIONS ORDERING INFORMATION Specitications TRADELINE@ MODELS TRADELINE@ models are selected and packaged to provide ease of stocking ease of handling and maximum replacement value Specifications of TRADELlNE@ con trols are the same as those of standard models except is available exCept where noted in Table 1 The steam trap is necessary for boiler installations SWITCH Mercury switch es in all models except the ES IA04F which has a Micro Switch snap acting swit9h PRESSURE SENSING ELEMENT Stainless steel dia phragm brass bellows in 300 psi 21 1 kg cm2 as noted below 2068 kPa TRADELINE@ MODELS AVAll ABLE L604A Pressuretrol@ ControllersAvailable in 2 to 15 5 to 50 10 to 150 and 20 to 300 psi 14 to 1 kgcm2 14to 5 kgcm2 34 to 345 kPa 3 69 to 1034 kPa and 1 4 to 210 103 kPa cm2 4 to kPa 2068 ADDmONAL FEATURES cross reference label minus 370C also refer to Mounting section 7 to 10 6 kg kgcm2 Scales are marked in psi and kPa ELECfRICAL CONNECTIONS Internal screw tenninals hole in side of case for 1 2 in conduit MEANS MOUNTING Hexagonal fitting on diaphragm has 1 418 NPT internal threads for mounting on a pipe or steariJ trap siphon loop Also can be surface mounted using screws through two holes knockouts in back of with STANDARD MODELS MODELS IA04A D F andL604A L MPres uretrol@Con trollers See Table 1 A 14026 Steam Trap the note in the Location and ADJUSTMENT MEANS Screws on top ofcontroller case 138 to TRAnELINE@ pack models MAXIMUM AMBIENTTEMPERA11JRE 1500F 660C MINlMUM AMBIENT TEMPERATURE Minus 350F siphon loop case Ordering Information purchasing replacement and modernization products from Catalog or price sheets for comple ordering number or specify 1 Order number TRADELINE4D model if desired When 2 3 4 your TRADELlNE@ wholesal r or distributor refer to the Tradeline Operating range see Table 1 Model without steam trap if desired and available see Table I Note b Optional specifications if desired see fable 1 Replacement parts if desired 5 6 Accessories if desired If you have additional 1 2 questions need further infonnation or would like to conunent on our products or services please write Your local Home and Building Control Sales Office please check the white pages of your phone directory Home and Building Control Customer Logistics or phone Honeywell Inc 1885 Douglas Drive North 4386 55422 Minneapolis Minnesota 612 951 1000 In Cmlada Honeywell LimitedIHoneywell Limitee 740 Ellesmere Road Scarborough Ontario M1P2V9 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 A S L404A D F L604A L M SPECIFICATIONS TABLE 1 ABLE MODELS AVAll Midscale Subtractive Differential Action on Pressure Rise Operating Ranges Setpoint Model to L404A spst breaks 2to 5 to 50 circuit 10 to 20 to A04 8i I spst makes circuit c 15b 150b 300d f 2 to 15d c e 5 to 50 34 to 345 138 to 2068 14 to 103 69 to 1068 14 to 103 2to6 34 to 345 circuit 10 to 150 14 to 1 0 66 to 10 2 to 15 14 to 10 2 isolated spst circuits or 1 makes R1 W breaks R2 B spdt 35 to 3 5 10 to 150 66 to 10 69 to 1034 4 to210 1 138 to 2068 20 to 50 14 to 10 35 to 3 5 14 to 103 34 to 345 2to6 20 to 300d 66 to 10 14 to210 69 to 1034 138 to 2068 8 to 16 15 to 40 2 to 15 14 to 10 14 to 103 spdt circuit to spdt circuit 103 to 276 500 35 2 3445 35 345 28 to 82 27 to 83 85 60 586 55 to 110 225 15 8 1550 103 to 276 500 35 2 3445 35 345 225 60 15 8 586 1550 500 35 2 3445 35 345 225 15 8 1550 35 345 85 14 to 41 14 to 41 41 to 97 41 to 97 85 60 586 69 to 15 2 1 4 to 35 60 to 152 138 to 345 225 15 8 35 2 1550 14 to 41 28 to 82 14 to 41 27 to 83 25 18 60 172 85 56 to 1 1 0 1 04 to 2 76 55 to 110 225 15 8 1550 103 to 276 500 35 2 3445 25 18 172 225 15 8 1550 12 manual reset g 500 3445 586 fixed subtractive differential makes R W breaks R B L604M 1550 manual reset g 5 to 50i 2 to15C 5 to 50 10 to 150 15 8 fixed subtractive differential 6 to 14 10 to 22 300d 586 225 manual reset 66 to 10 6 345 60 fixed subtractive differential 1 4 to 210 35 85 14 to 103 34 to 345 69 to 1034 kPa 14 to 41 104 to 2 76 69 to 1034 138 to 2068 kglem2 14 to 41 15 to 40 2 to 15 20 to 76 2 56 to 1 10 spst makes R W breaks R B 104 to 4 to 12 8 to 16 5 to 50 snaR makes 15 to 40 24 to 345 circuit acting 2068 35 to 14 to 10 35 to 3 5 300d to psi 127 to 83 55 to 110 10 56 to 1 2to6 2 to 15 to 69 138 12 8 to 16 4to 1034 14 to 103 5 3 Maximum Surge Pressure 14to4 14 to 41 28 to 82 14 to 1 spst breaks switch L604L 35 to 3 5 66 to 10 6 4 to 210 1 spdt L604A 2to6 66 to 10 6 10 to 150 lA04F 14 to 103 b 150e 20 lA04D 14to10 20 to 300d 10 to A04C I psi to kPa kgfcm2 kPa 14 to 210 a Adjustable a kglem2 psi I I I Switching 10 to 150 66 to 10 1 69 to 1034 fixed 3 5 psi 24 1 kPa makesR W breaks R B a Scaleplates are marked in both psi and kglcm2 5A at 120 Vac rated for O Model available with special fixed low differential Switch differential in 2 to 15 psi models C 6 midscale subtractive available with 1 to psi L404A B and L604A models are with ammonia d for use oxygen or other corrosive materials Brass bellows replaces stainless steel diaphragm Not suitable or 8 62 kPa and minimum subtractive differential of 0 5 0 09 e of 1 25 psi kglcm2 Model available with minimum operating pressure b psi 0 035 kglcm2 or 3 45 kPa f g rated for 0 5A at 120 Vac Model available with special fixed low differential Switch to 2 controllers the trip free reset mechanism does not permit the controller Reset L404C D and L604L models are designated as Manual at the differential is fixed the reset The subtractive reset device when the manual reset lever is held in position function h J k as an automatic minimum value of the adjustable differential of the L404A for each L404F only all other models have mercury switches corresponding operating range Model available with sealed bell crank adjustment is installed between Rl and R2 Spst switches operate in unison spdt action when jumper of medium pressure air or steam in an oil burner system for atomizing Also recommended supervision SWITCH CONTACT RATING in amperes at 50 60 Hz I I Model Load L404A Full Load Locked Rotor Norimductiv L604A Lb Full Load Locked Rotor Noninductive L604M a b Full Load 120 Vae 240 Vac 120 Vde 4 24 0 240 Vde 12 12 0 20 80 48 0 10 0 1 5 30 6 50 80 48 0 10 0 51 30 6 50 20 0 80 10 10 0 40 10 5 0 10 5 0 5 0 20 L404F snap acting does not have non inductive or dc ratings L6 4A and Lhave also beentested andlisted by Underwriters Laboratories Inc and breaking not making at 120 Vac ratmg of 9 8 A full load plus 360 VA ignition plus 250 VA pilot duty 1 a load with atotal flO 21 50 1 0 404A D F L604A L M JPECIFICA nONS DIMENSIONS See Fig 1 See Fig 2 for mounting s trap siphon loop WEIGHT 2 me 0 91 kg FINISH Gray APPROVALS Underwriters Laboratories Inc listed IA04A B C D F L M only file no MP466 L604A l0 v01 no REPLACEMENT PARTS 129178 Thermoplastic Cover 14026 Steam Trap siphon loop l4 in Necessary for boiler installations ACCESSORlES 33312B Knurled on Canadian Standards Association certified L604A L only B C LA04A DF guide noAOO E O file no LR1620 TABLE 2 I main scale pressure Screw and 23466 Wrench ONVERSION TABLE psi Operating Range psi o to 2 to 15 5 to 50 Equivalent Scale Plate kglcm2 kPa OtolO o to 103 14 to10 3 to 3 5 15 to kPa Subtractive DitTerential Equivalent Scale Plate psi kglcm2 kPa 14 to 103 1 to 6 2to 6 07to4 14 to 4 7 to 41 14 to 41 34 to 345 4to 12 5 to 14 3 to 8 4 to 10 28 to 83 41 to 97 5 to 150 3 to 3 10 34 to 1034 10 to 150 7 to 10 3 69 to 1034 8 to 16 10 to 22 6 to 1 7 to 15 20 to 300 55 to 110 69 to 152 14 to 20 7 138 15 to 40 20 to 50 10 to 2 8 14 to 3 5 103 to 276 138 to 345 Flg Mountlng dimensions 1 LA04A of the to 2068 L404A B C D F and L604A L M pressuretroP Controllers in in Fj L 604A I M 41 l 3 COVER 114 4 1 16 1S 32 11 at4 2 3 CASE 110 2 49 16 G 3 Hl1164 0 81 32 1 29A 49 9 69 6 j 1 I 3 7 6 23 3 32 4 lI8 1r 5 94 31 32 4 2 126 1 1M6 48 0 J Me 4 6X 21164 L 3 6 KNOCKOl1T 2 1 RESET LEVER ON MANUAL RESET MOOas ONLY iHISOIMENSION AND 534 N ONLYON hO 1 1 IS AMM l48 27132IN t23 eo4MOOas ON t 0MM Ui04MOOasWITHA2TO ON lJi04MOOasWITHA21O WlTHA2010 300 PSI 15 PSI 1410 1 0 kgIan2 1f38 1 OPERATINGRANae 1SPSl 14 TO 1 0kg an 1410103 kPa 1 4 TO 2A7 iqycm2 13810 a OPERATING RANGE 2068Jd 14 10 103 pipe Adjustment Knobwith setscrew fits adjusting screw 4074BWJLimitStop tolimit set point ranges Assembly ineludes 129564 Range Stop 107194 Range Stop guide MBPR black iron kPo OPEAAllNG RANGE n mm F l604A lM D l404A INSTALLATION Installation WHEN INSTALLING TIllS PRODUCT 1 Read these instructions carefully Failure to follow hazardous them could damage the product or cause a Rlght and loop siphon trap Fig 2 sions in in a steam wrong mounting of dimen with approximate mm condition and on the 2 Check the ratings given in the instructions the product is suitable for your ct to make sure prod application 3 Installer must be a tramed guard control expenenced flame safe technician 4 After installation is complete check out as provided in these instructions product operation ffi CAUTION supply before beginning in prevent possible equipment dam 1 Disconnect power stallation to age or electrical shock 2 using the controller with a compressor installa dampening device suchas aneed1e valve header or surge tank to dampen pulsations that When can damage the controlleror reduce its life IN BLACK IRON PIPE WITH 1 4 18 NPT EXTERNAL TRHEADSON BOTH ENDS lD THE STEAM TRAP BEf SIPHON LOOP TO LEVEL THE CONTROLLER 1 4 IMPORTANT Locate the controller where the ambient temperature will not exceed 1500F 660C 2 Use pipe compound sparingly to avoid clogging the hole in the pipe or diaphragm fitting thecontroller by hand by holding the case 3 Do not M8934 1 tighten 4 Accurately level the controllerfor proper operation Make all pipe connections in accordance standards Use To avoidleaks anddamage to the case NOTE For most accurate operation add supplemental heat to installations where the temperature falls below minus Never locate the controller where the 200P minus 290C falls below minus 350P minus 370C be mercury in the switch freezes at this temperature temperatUre When used with steam boilers always mount the con troller above the water line in the boiler A steam trap loop must always be connected between the con Fig 2 to prevent boiler scale and corrosive vapors from attacking the diaphragm The loop to the face on the steam trap must always be perpendicular to controller If the of the controller the loop is parallel the controller and or contraction ofthe expansion loop tips causes the switch to operate inaccurately The controller can be mounted 1 alongside the pres 2 in a fitting on the boiler provided by e sure gauge the boiler manufacturer vibration or 3 at 4 in a remote a location in special mounting with approved compound to seal the connection joints Excess pipe compound can clog the small hole in the fitting and prevent the controller from case controller use a wrench hexagonal fitting the controller by hand by holding the case on the siphon troller and amount of pipe operating properly LOCATION AND MOUNTING cause only a small s parallelJaw Do not tig ten LeveUng A controller with a mercury switch must be accurately leveled for proper operation It is level when the leveling indicator Fig 11 hangs freely with its pointer directly over the index mark inside the back of the case Level the controller bycarefu11y bending the steam trap siphon loop Mounting Alongside a Pressure Gauge To mount the controller alongside a pressure gauge Fig 2 remove the gauge In its place install a steam ap siphon loop with a tee on top Using elbows and pIpe nipples moUnt the controller and pressure gau e on the ends ofthe tee Level the controller after installattOn of excesSIve on a low water cutoff I 11 L404A D F L M L604A INSTALLATION Mounting on a Boiler If it is convenient to mount the controller the pressure gauge install a steam trap siphon not alongside loop in the Fig 3L404 terminal blocks and internal schematics fitting provided by the boiler manufactUrer If there is no fitting mount the steam trap at a location recommended by RISE RISE the boiler manufacturer Screw the controller directly to the steam trap and level the controller Mounting at a Remote B Location If there is excessive vibration at the boiler that can adversely affect the operation of the controller mount the controller at a remote location All piping from the boiler must be suitable and solidly mounted The piping must be properly pitched condensation back to the boiler A steam trap siphon loop must be mounted be to drain all tween the remote piping and the controller Level the L404AC L404B D L404F SNAP ACTING BREAKS ON PRESSURE RISE TO SETPOINT MAKE ON PRESSURE RISE BREAKS R a MAKES R WON TO SETPOINT PRESSURE RISE TO SETPOINT controller after installation M8941 Supervision of Atomizing Medium Pressure Air or Steam L404B When air or steam is used oil burner system bodies and codes 4L404 terminal block and Internal Fig atomizing medium in an authorities having jurisdiction approval as an schematic often require a low limit to prevent main oil valve until sufficient atomizing pres is present and to shut down the when the opening the sure system pressure falls too low The L404B is recommended for this application It makes a circuit when the pressure rises to the set and atomizing point breaks when the pressure falls to the set differential Fig 10 point minus the WlRING t 1 the power supply before DiscoDDe beginning wiring preventelectrical shock or equipment damage 2 Assume all wiring complies with applicable electrical co ordinances and regulations Use NEC Class 1 line voltage wiring L604A to 3 Fornormalinstallations wire sUitable for at least use moisture 1 750C 1670 least 1940F control a flame maximum use a7 cable ing tIie screw or vided cover Fig 8 in or 22 2 mm hole in one side for 12 in wires Remove the front cover loosen by Fig 5 through 9 for boiler manufacturer typical hookups Follow wiring diagram if pro s 7 Make sure the loads do not exceed the Switch Contact Ratings in the Specifications section 8 Replace SPDT SWITCH ACTION WITH JUMPER INSTALLED M8935 OTHERWISE TWO ISOLATED SPST SWITCHES SL404 used controller Fig as a limit or as an operating SPST CONTROLLER Ll HOT POWER SUPPLY 1 Lll FlAME SAFEGUARD CONTROL MOTOR OR OTHER LOAD U at the bottom of the main scale 6 Refer to the burner the operating temperature 3 and 4 and BREAKS R2 8 ON PRESSURE RISE TO SETPOINT moisture resis temperature rating above 5 All models have a terminal block inside the condui are control 4 For high temperature installations tant No 14 wire selected for a L604L M W resistant No 14 when you using or at safeguard primary 900C when using it with a programming the controller with MAKES Rl the front cover when wiring is completed PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED HIGH UMITl404A OR CBREAKS WHEN PRESSURE RISES TO SETPOINT 4048 BREAKS WHEN PRESSURE FALLS TO SETPOINT LOW t UMIT MINUS DIFFERENTIAL 404A BREAKS WHEN PRESSURE RISES OPERATING t CONTROLLER TO SETPOINT AND MAKES AGAIN WHEN PRESSURE FALLS TO SETPOINT MINUS DIFFERENTIAL M8936 L404A D F L604A L M INSTALLATION Fig 6 l404 with a low Fig voltage relay 8l404F l604A with l604M used as a jumper low limit with installed an or alarm circuit SPOT LOW VOLTAGE RELAY CONTROUER L1 HIGH HOT POWER SUPPLY 24 VOLT THERMOSTAT UMIT 1 a L2 Ll FlAME HOT SAFEGUARD CONTROl POWER SUPPLY Lb MOTOR OR OTHER 12 LOAD LOAD ALARM PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M8940 PROVIDE DISCONNECT AS REQUIRED MEANB AND BRE R TO B AND MAKES AKS TO SETPOINT OVERLOAD PROTECTION R TO W WHEN PRESSURE RISES M8938 Fig as a l404F l604A Oump r installed high limit with an alarm circuit 7 used Fig 9L404F controlling an SPOT or L604 wlth jumper installed M644B motor CONTROUER LOW UMfT SPOT CONTROLLER W UNEVOLTAGE lWO POsmON MOTOR WHITE CLOSED LOW ARE Ll HOT FlAME SAFEGUARD POWER SUP PLY CONTROL MOTOR OR OPEN HIGH FIRE OTHER LOAD 12 Ll HOT POWER SUPPLY ill L2 PROVIDe DISCONNEct BLACK BLACK MEANS AND OVERLOAD PROTECTION MB44B AS REQUIRED BREAKS R TO WAND MAKES R TO B WHEN PRESSURE FALLS TO SETPOINT MINUS DIFFERENTIAL MB937 PROVIDE DISCONNECT AS REQUIRED MeANS AND OVERLOAD PROTECTION BREAKS R TO B AND MAKES R TO RISES TO SETPOINT W WHEN PRESSURE M8939 F L604A L M D ETTING AND CHECKOUT 04A Setting and Checkout automatic illy will not main scale setpoint They controllers one these reset of their fonner positions To to the set point minus the wait until the pressure falls reset lever the manual differential Fig 10 Then depress not be reset until will it The controller Fig 11 andrelease reset This lever prevents the con the manual you release reset device if the reset troller from becoming an automatic or down tied lever is stuck held in return to SETIING is subtractive from the In all models the differential The upper operating point is deter main scale set point set scale main point while the lower operat mined by the the main scale setting less the ing point is determined by and L604A with jumper The L404F differential setting installed L M have spdt switching action are Operating points shown in Fig 10 1oL404 and L604 Fig Fig operating points 11 Setting a JrPreetrossl i Controller MAIN SCALE SETPOINT SWITCH BREAKS SUBTRACTIVE DIFFERENTIAL L404A C PRESSURE RISE I DIFFERENTIAL SETTING SWITCH MAKES MAIN SCALE SETPOINT SWITCH MAKES SUBTRACTIVE DIFFERENTIAL L404B D PRESSURE RISE I 4 DIFFERENTIAL SETTING ill SWITCH BREAKS 4 MAIN SCALE SETPOINT B MAKES R W ill BREAKS R L404F L604 M PRESSURE RISE I SUBTRACTIVE DIFFERENTIAL DIFFERENTIAL SETTING MAKES R B BREAKS R W a MAIN SCALE SETPOINT 8 R2 Rl W BREAKS MAKE SUBTRACTIVE DIFFERENTIAL L604A PRESSURE RISE DIAPHRAGM ASSEMBLY DIFFERENTIAL SETTING BREAKS Rl W MAKES 8 R2 RESET S HAVE A SMALL AXED MeDB lA04C D AND l604L MANUAL PRESSURE DIFFERENTIAL THEY CAN BE MANUALLY RESET WHEN THE MINUSTHE DIFFERENTlAL SETPOINT FALLS TO THE MAIN SCALE 604M HAS l A AXED DIFFEAENTlAL SMALl OF 3 5 PSI 0 25 INDICATOR B F L404L WITH A5 TO ADJUSTABLE DIFFERENTIAL ON THE L404A OPERATING RANGE 34 TO 134 kPal 150 PSI 0 34 TO 103 kglcm2 ONLY AND L604A MODELS RESET LEVER ON THE L404C D AND L604L TRIP FREe MANUAL MODELS ONLY kgIcm2 MIlIl43 W for the desired operating Adjust the main scale set point screw Fig 11 the main scale adjusting pressure by turning case until the main scale setting indicator on the top ofthe L404A B F with a 5 to 150 psi is at the desired value On an 2 1034 kPa 34 to operating range or an 3 kg cm 10 3 to differential the setting by turning the dif L604A adjust screw Fig 11 until the differential ferential adjusting setting indicator is at the desired value L404C D and models see the next paragraph are manual reset L604L differential The scaleplates The L604M has a fixed cm2 marked psi arid kg are Free Manual Reset Feature D and L604LonlyL404D makes and the L604L L404C The L404C breaks the B when the pressure rises to the makes R W and breaks R Trip CHECKOUT wired and set test it After the controller has is installed allow the system to First with the system in operation while ofthe controller the operation stabilize Then observe should increase Pressure its setpoint raising and lowering raised and decrease when the set point when the setpoint is is lowered break points of the controller Also check the make and a accurately calibrated If they do not agree with separate s may a slight adjusnnent ofthe scaleplate pressure gauge be necessary when checking Use accurate pressure testing equipment not rely on inexpensive gauges The out the controller Do calibrated at the factory controllers are carefully L404A F L604A L M D SETTING AND CHECKOUT Boiler Installation If the controller is being used on a boiler installation it as follows test ffi CAUTION Do not 1 Note the boiler pressure sure gauge To perform this by checking the boiler pres testproperly the boiler should have or control and any others burner and boiler manufacturers safeguard required by tlie corresponds gauge readiri g 3 TheL404A or C should break the control circuit s automatically when the boiler pressure gauge reading equals or slightly exceeds the controller setting b9iler pressure The L404B service until you have all applicable tests de scribed in this Checkout section in the Checkout section of the applicable instructions for the flame a pressure reading near the middle of the controller s main scale range 2 Turn the main scale adjusting screw Fig 11 until the rlnscale m to setting indicator on the controller th put the system into satisfactorily completed D should make the circliit under the Fig 12 Checking controller operation using an ohmmeter same circumstances The L404F M should L604L break the R B circuit under the MAIN SCALE inake the R same ADJUSTlNG W circuit and circumstances SCREW The L604A should make the RI W circuit and break the R2 B circuit under the same circumstances 4 If the controller is operating properly turn the main scale adjusting screw Fig 11 until the main scale setting indicator is at the desired set Ifa Controller Seems to Ifthe controller is point Operate Improperly of operating iniproperly suspected it may be further checked as follows Fig 12 1 Disconnect all power to the controller loosen the cover screw and remove the cover MAIN SCALE SETllNG INDICATOR 2 DisconneCt the wires from the controller 3 Connect an ohmmeter between the switch terminals 4 Lower the set point of the controller a simulating pressure increase through a range greater than the differen tial The switch should either make or break depending on the model ofthe controller AnL404A orC should an break L404B orD should make IA04F M should break L604L R B and make R W and an L604A should breakR2 B and make RI W If it makes the ohmmeter reads zero if it breaks the ohmmeter reads infinity I an 5 Raise the set point of the controller simulating a pressure decrease through a range greater than the differen tial The switch should break or make just the opposite ofits action in step 4 except for the L404C D and L604L manual reset models I 00 INPUT I SETPOINT I OUTPUT I DEqREASE I I I I I I I I I o I I 280 I I I ADJ ro NOTE An approximation ofthe differential can be made by observing the change in set point required for aresistance change from zero to infinity 6 Ifthe controller operates 7 When the controller is the wires to the cover improperly replace it operating properly reconnect the terminal block replace the cover and tighten screw and reconnect the power ZERO OHMS INANITY WHEN R B BREAKS AN l604 WITH JUMPER INSTALLED BElWEEN Rl AND R IS SHOWN AN L404F OPERATES SIMIlJ RL Y SPOT SWITCHING AN L404A B C OR 0 HAS ONLY TWO TERMINALS SPST SWITCHING AN L404A OR C BREAKS AND L404B OR 0 MAKES WHEN THE SETPOINT IS DECREASED FAfl ENOUGH M8944 Q4A D F L604A L M RVICE INFORMATION Service Information MAINTENANCE CALmRATION The controller carefully calibrated during manufac not require recalibration Most calibra turing and should caused by improper leveling The controller tion errors are the when should be level pointer onthe leveling indicator is The was directly over the index mark leveling indicator may not be Fig 11 accurate In some cases enough the The pointer the index mark but the controller still may not may be over tolerance of its scale setting In this be operating within the bend the steam trap siphon loop until the case carefully controller switches properly to at all times ofthe controller should be in place from dirt dust and the internal components cover protect should consist of away any maintenance physical damage Routine or brushing and blowing occasional inspection functioning of accumulated dirt and dust To ensure proper check of times perform an operational the controller at all the entire system during routine maintenance checks
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : No Page Count : 10 Title : 4b Pressuretrol Author : Laserfiche Client Creator : Laserfiche Create Date : 2006:03:06 17:36:13EXIF Metadata provided by EXIF.tools