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MORTEX

 

PRODUCTS

 

INC

 

FORT

 

WORTH,

 

TX

 

76106

 

Page

 

7

 

SERVICE AND MAINTENANCE MANUAL 

 

SECTION I: SAFETY 

 

THE HOME OWNERS AND / OR APPLIANCE USERS 
MUST STOP HERE! 

 

This section has been designed to assist a 

qualified service 

agency

 in performing service and maintenance on this 

appliance.  

 

The homeowners and/or the appliance user must never 
attempt

 to perform any service or maintenance on the 

appliance especially when it involves the removal or 
adjustment of any parts and/or components. 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

The following safety rules must be followed when servicing 
this furnace.

 

 

 This is a safety alert symbol. When you see this symbol 

on labels or in manuals; be alert to the potential for personal 
injury. 

 

Understand and pay particular attention to the signal words 

DANGER, WARNING, 

or 

CAUTION. 

 

DANGER:

 indicates an 

imminently

 hazardous situation, which 

if not avoided, 

will result in death or serious injury. 

 

WARNING:

 indicates a 

potentially

 hazardous situation, which if 

not avoided, 

could result in death or serious injury. 

 

CAUTION:

 indicates a 

potentially

 hazardous situation, which if 

not avoided, 

may result in minor or moderate injury.

 It is also 

used to alert against unsafe practices and hazards involving 
property damage. 

 

 

 
 
 
 
 
 

 
 
 

 

 
 
 
 
 

 

 

 
 
 
 
 
 
 
 

SAFETY REQUIREMENTS 

 

1.

 

This electric furnace may have a dual electrical supply 
circuit. Make sure you check each electrical circuit with a 
meter to be sure the power has been disconnected. 

2.

 

Insulating materials may be combustible. The furnace 
must be kept free and clear of insulating materials.  

3.

 

Follow the instructions exactly as shown in Start Up and 
Shutdown Section in this manual to properly Start Up or 
Shutdown this appliance. 

4.

 

Make sure all moving parts have come to a complete stop 
before attempting to perform any work once the furnace 
door has been removed. Moving parts can cause serious 
injury if clothing or body parts get caught in the moving 
part. 

 

 

 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 

The manufacturer or distributer will not be responsible for 
any repairs due to improper parts changes, improper 
maintenance, improper furnace adjustments or improper 
modifications made by the homeowner and/or the appliance 
user.  

The manufacturer will not be responsible if the homeowner 
and/or appliance user use this section of the instructions in 
an attempt to perform maintenance or repairs to the furnace. 
This practice is very dangerous and may result in a fire 
causing property damage, personal injury, loss of life and/or 
will void the appliance warranty. 

Improper adjustment, service or maintenance may create a 
condition where the operation of the product could cause 
personal injury or property damage. 

Refer to this manual for assistance or for additional 
information consult the Technical Support Group. 

This product must be serviced and maintained as specified 
in these instructions and/or to any applicable local, state, 
and national codes including, but not limited to building, 
electrical, and mechanical codes. 

FIRE OR ELECTRICAL HAZARD 

Failure to follow the safety warnings exactly could result in 
serious injury, death, or property damage. 
A fire or electrical hazard may result causing property 
damage, personal injury or loss of life. 

ELECTRICAL SHOCK, FIRE HAZARD 

Failure to follow the safety warnings exactly or 
improper servicing could result in dangerous operation, 
serious injury, property damage, and/or death. 

 

Before servicing, disconnect all electrical power to the 
furnace. Make sure you disconnect both power supplies 
if the furnace has a dual power supply circuit. Dual 
circuits may be used on the 12 kW, 15kW and 20kW 
furnaces. 

 

When servicing controls, label all wires prior to 
disconnecting to aid in proper reconnection of wires. 

 

Verify proper operation after servicing by turning the 
thermostat above the room temperature for a brief 
period of time to ensure future furnace operation 

Summary of Contents for E30 SERIES

Page 1: ...Torque Motor 14 9 Replacement Parts List 3 4 HP Constant Torque Motor 19 5 Blower Performance 3 4 HP Constant Torque Motor 15 CONTACT INFORMATION Contact us by mail Manufactured and Distributed by Mo...

Page 2: ...block or obstruct air openings used for ventilation and cooling of the furnace electrical components 8 Refer to the furnace rating plate for the furnace model number for the operating specifications...

Page 3: ...an The furnace s best friend is a qualified service technician If the unit gives any indication of improper operation call the service technician The service technician is allowed to perform the norma...

Page 4: ...of the furnace to make sure there are no flammable materials in the area If you smell vapors of any kind DO NOT turn on the power to the furnace until vapors have been ventilated and removed from the...

Page 5: ...s on the center shelf Refer to Figure 6 10 Push the upper door forward and tighten with the thumb screw until the door is secured to the cabinet Refer to Figure 6 11 Follow the instructions to Turn On...

Page 6: ...ted as to how to clean and reinstall filters washable or replaceable filters for good preventive maintenance Care must be taken that the edges of the washable or replaceable filter are resting on the...

Page 7: ...cause serious injury if clothing or body parts get caught in the moving part The manufacturer or distributer will not be responsible for any repairs due to improper parts changes improper maintenance...

Page 8: ...trol Box Cover Figure 8 Blower Assembly and Mounting Screw Location 8 Check the blower wheel for dust and debris Use the brush and the vacuum cleaner to remove any dust or debris from the wheel Be car...

Page 9: ...heating or cooling operation 9 Thermostat Y Circuit The thermostat Y circuit is used for cooling or high speed indoor fan operation When 24 VAC is placed on the thermostat Y circuit the 24 vac is sen...

Page 10: ...heck all wiring connections especially on any of the components to ensure they are securely fastened If you have 240 VAC coming out of the control box circuit breakers and you have 24 VAC between the...

Page 11: ...tactor check for 24 VAC between the A1 and A2 terminals If 24 VAC is present then replace the heater contactor L1 L2 T1 T2 A 1 A 2 Figure 11 Heater Contactor Terminal Designations Blower Motor FLA 1 3...

Page 12: ...2 741 615 466 LO 764 689 586 507 460 399 332 MED LO 855 807 733 632 571 521 478 416 367 MEDIUM 990 923 878 825 741 672 628 574 520 440 MED HI 1085 1031 988 929 878 789 725 663 603 474 HI 1291 1247 120...

Page 13: ...56 630 494 with Cabinet MEDIUM 1251 1216 1170 1134 1079 1045 1009 860 685 570 97 FLSB 27 MED HI 1450 1410 1380 1335 1303 1221 1139 1056 737 580 or 97 FLSF 27 HI 1549 1506 1457 1410 1335 1246 1165 1056...

Page 14: ...1245 1137 1012 679 551 or 97 FLSF 39 HI 1570 1531 1488 1415 1344 1279 1170 1070 736 562 CFMwith Coil LO 851 813 759 708 618 555 523 458 394 362 98 8Z12W OP MED LO 1021 982 934 884 837 740 684 636 573...

Page 15: ...4 1065 874 711 561 with Cabinet MEDIUM 1404 1350 1327 1294 1251 1211 1145 1005 718 535 97 FSOB 39 MED HI 1601 1538 1468 1400 1327 1241 1148 888 719 541 HI 1725 1613 1530 1442 1360 1283 1190 1088 739 5...

Page 16: ...TON ACCESSORY BLOWER 86MH0025 3 4 HP PSC 5 TON ACCESSORY BLOWER 86MH0026 3 4 HP CONSTANT TORQUE 5 TON ACCESSORY BLOWER 86MH0027 21 1200 CFM BROKE DOWN COOLING COIL CABINET 97 FLSB 21 21 1600 CFM BROK...

Page 17: ...019P R68AB0019P 6 HEATER CONTACTOR 2 R68AB0019P R68AB0019P R68AB0019P 7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 8 CIRCUIT BREAKER 1 R68BAD014 R68BAD016 R68BAD018 R68BAD...

Page 18: ...HEATER CONTACTOR 2 R68AB0019P R68AB0019P R68AB0019P 7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 8 CIRCUIT BREAKER 1 R68BAD015 R68BAD017 R68BAD018 R68BAD015 R68BAD018 R68B...

Page 19: ...AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 8 CIRCUIT BREAKER 1 R68BAD015 R68BAD017 R68BAD018 R68BAD015 R68BAD018 R68BAD018 9 CIRCUIT BREAKER 2 R68BAD014 R68BAD013 R68BAD017 10 LOW VOLTAGE TERMINAL...

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