Railway Equipment 934 Operating Manual

Electric hot air blower track switch snow melter 480 / 230 vac 1 & 3 phase 50kw and 60 kw load capacity

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OPERATING MANUAL

MODEL NO. 934

ELECTRIC HOT AIR BLOWER

TRACK SWITCH SNOW MELTER

480 / 230 VAC 1 & 3 PHASE

50KW AND 60 KW LOAD CAPACITY

MANUFACTURED

RAILWAY EQUIPMENT COMPANY

15400 MEDINA ROAD

PLYMOUTH, MINNESOTA 55447

TEL. 763-972-2200

FAX. 763-972-2900

E-Mail:

Support: Techsupport@rwy.com

Sales: Order@rwy.com

P/N R9340-0104

REV B

5/11

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Summary of Contents for Railway Equipment 934

Page 1 480 / 230 VAC 1 & 3 PHASE 50KW AND 60 KW LOAD CAPACITY MANUFACTURED RAILWAY EQUIPMENT COMPANY 15400 MEDINA ROAD PLYMOUTH, MINNESOTA 55447 TEL. 763-972-2200 FAX. 763-972-2900 E-Mail: Support: Techsupport@rwy.com Sales: Order@rwy.com P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 2 RECOMMENDED BY THE INSTRUCTIONS. NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE, SOLVENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 3 AFTER INSTALLATION. ANYONE OPERATING OR SERVICING THIS SNOW MELTER SYSTEM SHOULD READ THE MANUAL ENTIRELY BEFORE PROCEEDING. IF YOU HAVE ANY QUESTIONS CONCERNING THE MANUFACTURE, DESIGN, FUNCTION, INSTALLATION, OPERATION OR MAINTENANCE, CONTACT RAILWAY EQUIPMENT COMPANY BEFORE PROCEEDING. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B...
Page 4: Table Of Contents
MODULE CONTROLS AND INDICATORS FAULT CONDITIONS ADVANCED FEATURES OPERATION SEASONAL MAINTENANCE VII. TROUBLESHOOTING UNIT DOES NOT START LOW HEAT LEVEL LOW AIRFLOW VIII. SNOW DETECTOR INSTALLATION OPERATION MAINTENANCE TROUBLESHOOTING SPECIFICATIONS DRAWINGS LIMITED WARRANTY P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 5: General Information
4 = 3/5 PANEL CONFIGURED 2 = 460VAC 1PH 10X10 ADAPTOR FLANGE MODEL 3 = 230VAC 3PH AND NOZZLE (NO TIE DUCT) 934 2HP High Profile 4 = 460VAC 3PH POWER 5 = 2HP PANEL CONFIGURED 937 2HP Low Profile 5 = 575VAC 3PH...
Page 6: Standard Features
Standard ductwork: heat duct with straight insulated flexible duct and heavy duty insulated offset duct connects to main tie duct electrically insulated between rails, 24 inch (minimum) switch point nozzles. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 7: Component Description
BLOWER MOTOR: The motor is totally enclosed and fan cooled. BLOWER: The high efficiency blower wheel is dynamically balanced for smooth and quiet operation. BUZZER: The buzzer will sound a 10-second tone immediately before the motor contactor is energized. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 8: Main Hab Unit
POINT NOZZLE ISOLATING KIT: This is an electrically insulating gasket with insulating washers and hardware to provide isolation between the nozzles and the outlet duct. Refer to drawing 9278-0021 for proper installation. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 9: Optional Ductwork
A kit is available (P/N 9278-0270) that includes a 7’ track duct, a track duct nozzle and a track duct isolation kit. OTHER DUCTWORK ASSEMBLIES ARE AVAILABLE. CONSULT THE FACTORY FOR SPECIAL DUCTWORK NEEDS. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 11: Installation
Install the two-foot heavy duty offset duct (P/N 9278-3403) to the tie duct using hardware and gasket supplied with the offset duct. Firmly repack ballast under the entire tie duct. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 12: Main Hab Unit
Connect the other end of the flex duct to the HD offset duct. With all components in the proper position, the foundation nuts may now be tightened. The fill can now be replaced around the mounting foundations. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 13: C. Point Nozzles And Track Ducts
Connect the center cover piece over the seam. (NOTE: The center cover piece has slots to contain the bolts on the track duct). c. Finally, connect the two end cover pieces. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 14 Knockout tabs that are not bent back completely will obstruct the airflow as it moves through the track duct resulting in reduced air pressure and airflow further along the track duct. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 16: Electrical Connection
+24 VDC: Place a jumper between terminal posts TS1-2 and TS1-7. +24 VDC fail is now present on post TS1-5 with common at terminal post TS1-6. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 17: Control Module
AUTO: This position will allow operation by placing a circuit closure across terminal posts 1 and 2. It will also allow operation by an optional snow detector. OFF: If off, GHAB cannot be run from remote or snow detector. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 18 After no user action, such as turning dial or changing mode switch has occurred for 10 minutes, the display will power down. To retrieve the display, rotate the selector dial. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 19 Cool timer displays the time remaining until the motor contactor will be disabled and the unit cycles down. 6. CYCLE DONE TIMER Cycle done timer displays the time remaining until the motor stops turning. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 20: Fault Conditions
This device is connected to the bottom of the motor contactor on the control panel. Reset by pressing the red button on the device. Check unit for high motor current, bad bearings, or obstructions in the blower wheel. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 21 After the problem is corrected and the unit cools down for 30 Seconds, the fuse will reset. 12. VOLTAGE FAULT PHASE 1: Voltage fault phase 1 is set when phase 1 line voltage is either above or below voltage setpoints. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 22: Advanced Features
Line voltage frequency is displayed. LINE VOLTAGE __ V LINE CURRENT __ A KWATTS TOTAL Real time kilowatt use is displayed. 1. KWH RESET Display of accumulated KWH use since this register was last P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 23 Power up counter is total count of power ups / processor resets. To reset this value, rotate selector dial. OVERTEMP FAULT COUNTER: Overtemp fault counter is total count of heat duct overtemps. To reset this value, rotate selector dial. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 24 3. Note this fault only applies to 3 phase models. To reset above faults, rotate selector dial. MAJOR VOLTAGE FAULT COUNTER: Major voltage fault counter is total count of major voltage faults. To reset above faults, rotate selector dial. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 25 The parameter can be set from 0 to 240 seconds in 10 second increments. ADVANCED PROG REV/DATE P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 26 With snow indication on indication will remain on during snow time if no faults are present. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 27 Factory default is used to place all parameters back to factory default settings. To enable factory default settings rotate selector dial while this menu item is displayed. All settings will return to factory default settings. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 29: Operation
Section IV Part B under (Select Snow Timer). V. SEASONAL MAINTENANCE SPRING: Turn off electric power at source. Disconnect and remove the control module. Store in a clean, dry place. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 30: Troubleshooting
The motor overload relay is adjustable. It should be set for the motor name plate current. Push the RESET Button (PB1). LOW HEAT LEVEL Check heater fuses for an open fuse. Check the heating elements for an open heater. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 31: Low Airflow
Make sure knockouts on the track duct are pushed all the way back in the track duct. Check the spacing between the inlet cone and the blower wheel. The gap should be less than 1/16 of an inch. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 32: Snow Detector
A second sensing head is then placed away from the switch area, such as on a bungalow or pole. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 33: Operation
Use a clean, dry cloth to wipe the grid. Make sure there is no residue left on the surface. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 34: Maintenance
Clean the snow detector heads as described in section C, Snow Detector Maintenance. Remove white lead(s) from terminal post 10. If moisture indication is still on, the control module is defective and should be replaced. P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 35: Specifications
230VAC 1PH 60HZ 250/300 Amp MOTOR: 2HP, 3450RPM TEFC 60 Amp starting current 9 Amp running current AIRFLOW: 1500 CFM KW OUTPUT: 50 – 60KW INDICATION CONTACTS: 30VDC 1A or 125VAC 300mA P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 36: Drawings
SWITCH ROD DUCT 7’ 9278-0270 TRACK DUCT SUPPORT BRACKET ASSEMBLY 92774 EHAB CONTROL 480V/60KW/1PH 9348-2370 EHAB CONTROL 480V/60KW/3PH 9348-2380 EHAB 480VAC 1PH 60KW CONNECTION 9344-2370 EHAB 480VAC 3PH 60KW CONNECTION 9344-2380 P/N R9340-0104 © 2010 RAILWAY EQUIPMENT CO. REV B 5/11...
Page 60 MENU SELECT MENU SELECT MENU SELECT MENU SELECT FACTORY DEFAULTS FAULT HISTORY SETPOINT To restore factory default MAIN MENU values SELECT F OR C HOUR METER 145 PHASE 1 VOLTAGE Select Fahrenheit or Celsius RESET HOUR 46 FAULT COUNTER 0 for desired temperature display (Advanced display) Turn dial to clear counter...
Page 61: Limited Warranty
LIMITED WARRANTY Railway Equipment Co., Inc. (“Railway”) warrants all of its products to be free from defects in material and workmanship when used under specified operating conditions and within specified limits. Railway’s warranty shall extend for a period of two (2) years from the date of shipment to the original purchaser.