SAMUEL JACKSON HO-7-1237 Service Manual Download Page 14

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PAGE 11 of 61 HO-7-1237 & HO-4-1234 OIL-FIRED HEATERS

ERRORS AND ALARMS

HO-7-1237 & HO-4-1234 OIL-FIRED HEATERS

CODE

ERR/ALM

DESCRIPTION

420

AIR FLOW SWITCH ON MORE THAN 24 HOURS

421

MOMENTARY LOW AIR FLOW POSSIBLE CHOKE

422

LOW AIR FLOW FOR MORE THAN 3 SECONDS

425

OIL LOW PRESSURE CHECK SUPPLY AND FILTERS

426

OIL HIGH PRESSURE

430

OIL LOW PRESSURE SWITCH FAILED

431

LOW ATOMIZING AIR PRESSURE

432

ATOMIZING AIR PRESSURE SWITCH FAILED

433

MODULATING MOTOR FAILS TO CLOSE

434

MODULATING MOTOR FAILS TO OPEN

435

LOW COMBUSTION AIR PRESSURE

436

COMBUSTION AIR PRESSURE SWITCH FAILED

441

FAN INTERLOCK HAS BEEN BYPASSED

442

AIR FLOW SWITCH HAS BEEN BYPASSED

443

NO FAN INTERLOCK. IS FAN ON?

444

EXCESSIVE FLAME FAILURES

446

FLAME NOT ESTABLISHED

451

FLAME FAILED IN OPERATION

453

FLAME SIGNAL BEFORE SPARK BEFORE FUEL

455

FLAME SIGNAL DURING SPARK BEFORE FUEL

456

NO SAFETY SWITCH TEST PERFORMED LAST SIX SHUT
DOWNS

457 *

GAS LOW PRESSURE (DUAL-FUEL MODEL)

458 *

GAS VALVE LEAK, UPSTREAM (DUAL-FUEL MODEL)

459 *

GAS VALVE LEAK, DOWNSTREAM (DUAL-FUEL MODEL)

460 *

GAS LOW PRESSURE SWITCH NOT WORKING (DUAL-
FUEL MODEL)

Summary of Contents for HO-7-1237

Page 1: ...PAGE 2 of 61 HO 7 1237 HO 4 1234 OIL FIRED HEATERS SAMUEL JACKSON INCORPORATED 2003 ALL RIGHTS RESERVED SERVICE MANUAL SAMUEL JACKSON DRYAIRE HEATER HO 7 1237 OIL FIRED HEATERS HO 4 1234...

Page 3: ...el Train Components 39 Component List 40 20000 Remote Control Components 44 20000 Remote Control Wiring Schematic 45 20000 Remote Control Dimensions 46 20050 Diagnostic Module Dimensions 47 Adjustment...

Page 4: ...misplaced or being used for other jobs Heater installation will then go smoothly with no delays waiting or looking for missing parts This manual gives general information on the location of thermocou...

Page 5: ...performs six air flow tests and interlocks including tests for a jammed or jumpered air flow switch presence of electrical fan interlocks and warnings of impending chokages in the air stream To preve...

Page 6: ...entical The heater s various operations will be displayed as the self checks and ignition sequence are performed The digital temperature controllers will energize during this sequence and complete the...

Page 7: ...ge to the surge protector and controls in the off season it is a good idea to turn power off to the control cabinet until it is needed again ALARMS and ERRORS are fully described later in this manual...

Page 8: ...to Figure 2 placement of the primary thermocouple on the inner radius side after an elbow will protect it from abrasion Angling the thermocouple 45 degrees in the direction of cotton flow will prevent...

Page 9: ...is normally the high temperature limit for cotton fiber There are two temperatures displayed on each controller during burner operation The bottom number is the desired temperature It is called the se...

Page 10: ...ature on the PRIMARY TEMP CONTROLLER is automatically adjusted based on incoming moisture content of the cotton We call this arrangement Feed Forward Control To bypass the automatic moisture controls...

Page 11: ...l upward or downward Raising the SP up on the moisture control will provide lower drying temperatures while lowering the SP will provide higher temperatures A decal is provided on the face of the mois...

Page 12: ...t button and switch have identical functions on both the DIAGNOSTIC MODULE and the LOCAL PANEL located in the heater cabinet This arrangement allows access to the test program from the remote control...

Page 13: ...r logs or decrement to the latest Log entries are in a first in first out stack therefore Error Log 500 is replaced when another log event occurs Figure 6 shows a typical Error Log display Error Log 0...

Page 14: ...ILED 433 E MODULATING MOTOR FAILS TO CLOSE 434 E MODULATING MOTOR FAILS TO OPEN 435 E LOW COMBUSTION AIR PRESSURE 436 E COMBUSTION AIR PRESSURE SWITCH FAILED 441 E FAN INTERLOCK HAS BEEN BYPASSED 442...

Page 15: ...NG ERROR 463 E AIR HIGH TEMPERATURE LIMIT EXCEEDED 464 E HIGH TEMPERATURE AT BURNER HEAD 470 ALERT LOW PLC BATTERY 472 A FLAME SIGNAL LASTS TOO LONG AFTER SHUTDOWN 480 A HOT BOX TRASH GATE OPEN MORE T...

Page 16: ...r ERROR until the RESET button is pressed Only one ALARM or ERROR condition is displayed at a time The oldest unacknowledged ALARM condition is shown even if the burner shuts down due to an ERROR Pres...

Page 17: ...ressure should be adjusted equal to the air pressure Oil pressure higher than air pressure can result in smoky operation and difficulty in starting ERROR 426 OIL HIGH PRESSURE A shutdown due to this e...

Page 18: ...LOW COMBUSTION AIR PRESSURE This error occurs when the Combustion Air Pressure Switch CAP senses insufficient combustion air pressure less than 1 inch w c during certain steps of the operating progra...

Page 19: ...nt shutdown of the burner when the fan is stopped The installing electrician is responsible for wiring the coil of this relay to the fan circuit Sometimes the installing electrician substitutes an ele...

Page 20: ...light on the Flame Relay ERROR 453 FLAME SIGNAL BEFORE SPARK BEFORE FUEL This ERROR is normally caused by a malfunction or tampering with the flame relay FLR ERROR 455 FLAME SIGNAL DURING SPARK BEFOR...

Page 21: ...m may be run to determine the severity of the leak Refer to DUAL FUEL TEST SEQUENCE EXPLANATION for details Contact the factory if the leak is severe ERROR 460 DUAL FUEL MODEL GAS LOW PRESSURE SWITCH...

Page 22: ...above the burner head This temperature sensor will only be exposed to flame or excessive heat when air through the heater is suddenly interrupted causing the flame to go in a direction other than the...

Page 23: ...oad relay MOL1 at 6 5 amperes Verify voltage at one of the following 380 50 415 50 or 480 60 Check for low voltage condition Verify free rotation of motor shaft and fan impeller ERROR 485 FUEL PUMP MO...

Page 24: ...only on heater cabinet end of cable E042 NO CPU BATTERY CPU battery is either missing or dead This condition does not affect burner operation but will result in a reset of time date and custom settin...

Page 25: ...program at any time press RESET and turn the switch left momentarily then release both Killing the supply power will also exit the test program STEP 0 The PLC s battery status will be displayed durin...

Page 26: ...want the heater to automatically shutdown Once the shutdown time has been set the test program will advance to step 4 STEP 4 Observe the condition of PLC inputs There are actually two stages to this...

Page 27: ...ndicated by the arrows on the motors If not kill power and reverse two of the leads at the proper motor starter Return to this step in the test program If this is a new installation it will be necessa...

Page 28: ...e Combustion Air Fan also turns on for 5 seconds at start of this step Turning the switch to turns on the ignition transformer IGT Hold the IGT on for several seconds while observing the flame light o...

Page 29: ...C SHUTDOWN SETUP DISABLE AND RESET OR ENABLE SET TIME YES AND RESET 4 OBSERVE CONDITION OF INPUTS 0 LOCAL STOP O ON 3 REMOTE STOP O ON 13 HI TEMP LIMIT ON 21 OIL HI PRESSURE ON 5 AIR FLOW SW OFF ON IF...

Page 30: ...ALVE CENTER TO HOLD POSITION LEFT CLOSES FUEL VALVE RESET AND AIR FLOW ON 8 TEST AND ADJUST ATOMIZING AIR PRESSURE APR AND AAP RESET AND AIR FLOW ON RIGHT OPENS AAV LEFT CLOSES AAV 9 TEST COMBUSTION A...

Page 31: ...SHIELDED TWISTED PAIR 3 THERMOCOUPLE WIRES AFTER MIX POINT THERMOCOUPLE MARKED BLUE BEFORE MIX POINT HIGH LIMIT THERMOCOUPLE MARKED RED FROM CONSOLE TO ENTRANCE OF TOWER OR SECOND STAGE SKIMMER OUTLE...

Page 32: ...CONDUIT WITH 2 SHIELDED TWISTED PAIRS WITH SHIELD GROUND WIRE AND 3 16 GA WIRES SHIELDED WIRES CAN BE RAN WITH SENSITIVE WIRES FROM 20000 REMOTE CONTROL 2 16 GA WIRES 8 HOT BOX II TRASH GATE OPEN SWI...

Page 43: ...GE 20266 0 100 PSI UPPER CABINET APR AIR PRESSURE REGULATOR 13594A R07 200 RNKA UPPER CABINET BHT BURNER HIGH TEMPERATURE SWITCH 14392 SWITCH UNIT PB 10A 14393 TEMPERATURE TRANS KJ 11A1 UPPER CABINET...

Page 44: ...L OIL VALVE 16384 M8263B206V LOWER CABINET FP FUEL PUMP 16334 1300099 LOWER CABINET FPG FUEL PRESSURE GAGE 12313 0 160 PSI LOWER CABINET FPR FUEL PRESSURE RELIEF VALVE 12385 VJ 2W WS LOWER CABINET FS...

Page 45: ...237 BURNER IGT IGNITION TRANSFORMER 20632 1092 F UPPER CABINET LFS LOW FIRE SWITCH 16848 BZE6 2RN80 BURNER LP LOCAL PANEL COMPLETE 20128 SJMC UPPER CABINET MC1 COMBUSTION FAN MOTOR CONTACTOR 14854A LC...

Page 46: ...SP HO 4 BURNER OPM FUEL PUMP MOTOR 1 3HP 14735 M3458 LOWER CABINET PLC PLC COMPLETE ASSEMBLY 20619 DL 205 UPPER CABINET PV PILOT VALVE 17218 804098 GAS TRAIN CABINET SCR1 FUEL STRAINER 1 4 INCH 09991...

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