How it Works
Conair
Loading...
GasTrac
User Manual
60 pgs2.61 Mb0

Conair GasTrac User Manual

Download
Page 1
GasTrac
Instant Access
Parts and Service
(800) 458-1960 (814) 437-6861
www.conairnet.com
The Conair Group, Inc. One Conair Drive Pittsburgh, PA 15202 Phone: (412) 312-6000 Fax:(412)-312-6001
Process Air Heater
UGD014/0497
Installation
Maintenance
Operation
Troubleshooting
Page 2
It’s a good idea to record the model and serial number(s) of your equipment and the date you received it in the User Guide. Our service department uses this information, along with the manual number, to provide help for the specific equipment you installed.
Please keep this User Guide and all manuals, engineering prints and parts lists together for documentation of your equipment.
Date: Manual Number: UGD014/0497
Serial number(s):
Model number(s):
DISCLAIMER: The Conair Group, Inc., shall not be liable for errors
contained in this User Guide or for incidental, consequential dam­ages in connection with the furnishing, performance or use of this information. Conair makes no warranty of any kind with regard to this information, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose.
Please record your
equipment’s model and
serial number(s) and
the date you received it
in the spaces provided.
Copyright 1997
All rights reserved
THE CONAIR GROUP, INC.
Page 3
UGD014/0497 GasTrac Process Air Heater
TABLE OF CONTENTS
I
NTRODUCTION . . . . . . . . . . . . . . . . . . .1-1
Purpose of the User Guide . . . . . . . . . . . . . . . . . . . . . . . . .1-2
How the guide is organized . . . . . . . . . . . . . . . . . . . . . . . .1-2
Your responsibilities as a user . . . . . . . . . . . . . . . . . . . . . .1-2
ATTENTION: Read this so no one gets hurt . . . . . . . . . . .1-3
How to use the lockout device . . . . . . . . . . . . . . . . . . . . . .1-5
DESCRIPTION . . . . . . . . . . . . . . . . . . . .2-1
What is the GasTrac? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
How it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Fuel train features and controls . . . . . . . . . . . . . . . . . . . . .2-6
Specifications: GasTrac . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Specifications: Exhaust flue . . . . . . . . . . . . . . . . . . . . . . . .2-9
Specifications: Main power supply . . . . . . . . . . . . . . . . . . .2-9
INSTALLATION . . . . . . . . . . . . . . . . . . . .3-1
Unpacking the boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Preparing for installation . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Installing the GasTrac . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Replacing the host dryer’s process air heater . . . . . . . . . . .3-4
Installing the exhaust flue . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Connecting process air lines . . . . . . . . . . . . . . . . . . . . . . . .3-6
Connecting the gas supply . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Connecting the main power . . . . . . . . . . . . . . . . . . . . . . . .3-7
Installing the RTD probe . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Testing the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
OPERATION . . . . . . . . . . . . . . . . . . . . . .4-1
GasTrac operating features . . . . . . . . . . . . . . . . . . . . . . . . .4-2
The GasTrac control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
To start drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
To stop drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
MAINTENANCE . . . . . . . . . . . . . . . . . . . .5-1
Preventative maintenance checklist . . . . . . . . . . . . . . . . . .5-2
Cleaning the combustion air filter . . . . . . . . . . . . . . . . . . .5-3
Cleaning the electrical enclosure filters . . . . . . . . . . . . . . .5-3
Replacing the spark igniter . . . . . . . . . . . . . . . . . . . . . . . .5-4
Cleaning the ultraviolet flame detector . . . . . . . . . . . . . . . .5-6
Cleaning the burner sight glass . . . . . . . . . . . . . . . . . . . . .5-6
i
Page 4
GasTrac Process Air Heater UGD014/0497
TABLE OF CONTENTS
T
ROUBLESHOOTING . . . . . . . . . . . . . . . .6-1
Before beginning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
A few words of caution . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
When an alarm occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
How to identify the cause of an alarm . . . . . . . . . . . . . . . .6-3
Temperature controller alarms . . . . . . . . . . . . . . . . . . . . . .6-4
Burner controller alarms . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
Variable speed controller alarms . . . . . . . . . . . . . . . . . . . .6-10
Flue gas high temperature limit switch . . . . . . . . . . . . . . .6-14
Process high temperature limit switch . . . . . . . . . . . . . . .6-15
APPENDIX
Service/Warranty Information . . . . . . . . . . . . . . . .Appendix A
ii
Page 5
1-1
UGD014/0497 GasTrac Process Air Heater
● Purpose of the User Guide . . . .1-1
● How the guide is organized . . . .1-2
●Your responsibilities as a user .1-2
● ATTENTION: Read this so
no one gets hurt . . . . . . . . . . .1-3
● How to use the lockout device .1-5
INTRODUCTION
Page 6
GasTrac Process Air Heater UGD014/0497
1-2 INTRODUCTION
This User Guide describes the GasTrac process air heater and explains step-by-step how to install, operate, maintain and repair this equipment.
Before installing this product, please take a few moments to read the User Guide and review the diagrams and safety infor­mation in the instruction packet. You also should review man­uals covering associated equipment in your system. This review won’t take long, and it could save you valuable instal­lation and operating time later.
Symbols have been used to help organize the User Guide and call your attention to important information regarding safe installation and operation.
Symbols within triangles warn of conditions that could be hazardous to users or could damage equipment. Read and take precautions before proceeding.
Numbers within shaded squares indicate tasks or steps to be performed by the user.
A diamond indicates the equipment’s response to an action performed by the user.
An open box marks items in a checklist. A shaded circle marks items in a list.
You must be familiar with all safety procedures concerning installation, operation and maintenance of this equipment. Responsible safety procedures include:
● Thorough review of this User Guide, paying particular
attention to hazard warnings, appendices and related materials and diagrams.
● Thorough review of the equipment itself, with careful
attention to voltage sources, gas supply, intended use and warning labels.
● Thorough review of instruction manuals for associated
equipment.
● Step-by-step adherence to instructions outlined in this
User Guide.
PURPOSE OF THE USER GUIDE
HOW THE GUIDE IS ORGANIZED
1
◆ ❒
●
!
YOUR RESPONSIBILITY AS A USER
Page 7
UGD014/0497 GasTrac Process Air Heater
INTRODUCTION 1-3
We design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by fol­lowing the procedures outlined below and elsewhere in the User Guide and related instructional materials.
ATTENTION:
READ THIS SO NO
ONE GETS HURT
!
WARNING: Follow instructions carefully.
Incorrect installation, operation or maintenance of this product can result in a fire, explosion or other hazards causing property damage, severe personal injury or loss of life.
Only licensed electrical/mechanical contractors, or individuals experienced with the installation of nat­ural gas piping, process air ducting, thermal insula­tion, exhaust ducting and regional codes for indus­trial gas appliances, should install the GasTrac.
The GasTrac should be maintained and repaired by qualified technicians who are equipped with the correct tools and are experienced in the mainte­nance and repair of industrial gas appliances.
Inspection and testing of gas supply piping, exhaust ducting and the GasTrac gas controls and safety features should be performed periodically to ensure safe operation.
!
WARNING: If gas odor is detected...
❒ Open doors and/or windows to vent the gas. ❒ Do not touch electrical switches. ❒ Extinguish all open flames. ❒ Immediately have qualified personnel determine
the source of the gas leak and repair it.
!
WARNING: Do not store or place aerosol, compressed gas or flammable materials on or near this equipment.
The hot temperatures associated with the drying process may cause aerosols or other flammable materials placed or stored near the GasTrac to explode.
!
Page 8
GasTrac Process Air Heater UGD014/0497
1-4 INTRODUCTION
WARNING: Hot surfaces.
Temperatures inside the GasTrac can reach more than 800˚ F. Always shut down the GasTrac and host dryer and wait for them to cool before servicing. Do not remove the safety guard covering the GasTrac burner and heat exchanger.
WARNING: Disconnect and lock out
main power before servicing.
The GasTrac is connected to high volt­age. Always disconnect and lock out the main power source to the GasTrac before servicing. Also disconnect and lock out main power to the host dryer before ser­vicing the GasTrac. Failure to disconnect and lock out this voltage source could result in severe personal injury.
WARNING: Shut off main gas supply
and purge heat exchanger and gas lines before servicing.
If the fuel train, burner, ultraviolet sensor, sight glass or ignition are to be serviced, it is important that the GasTrac heat exchanger and gas lines are purged of natural gas. Failure to eliminate this potential source of a gas leak could result in severe damage, personal injury or loss of life.
WARNING: Do not operate the
GasTrac with safety features disabled or removed.
The GasTrac has been equipped with numerous guards, controls and devices to ensure safe operation.Never remove or disable these devices to sustain pro­duction. Operating without these devices could lead to hazardous conditions that can damage the facility or cause severe injury or loss of life.
ATTENTION:
READ THIS SO NO
ONE GETS HURT
!
!
!
Page 9
UGD014/0497 GasTrac Process Air Heater
INTRODUCTION 1-5
CAUTION: Before performing maintenance
or repairs on this product, you should disconnect and lock out electrical power sources to prevent injury from unexpected energization or start-up. A lockable device has been provided to isolate this product from potentially hazardous electricity.
Lockout is the preferred method of isolating machines or equipment from energy sources. Your Conair product is equipped with the lockout device pictured below. To use the lockout device:
Stop or turn off the equipment. Isolate the equipment from
electrical power.
Turn the rotary disconnect switch to Off, or O position.
Secure the device with an assigned lock or tag.
The equipment is now locked out.
WARNING: Before removing lockout
devices and returning switches to the ON position, make sure that all personnel are clear of the machine, tools have been removed and all safety guards reinstalled.
HOW TO USE
THE
LOCKOUT
DEVICE
I
O
1 2
3
4
!
Page 10
Page 11
2-1
UGD014/0497 GasTrac Process Air Heater
● What is the GasTrac? . . . . . . . . .2-1
●Typical applications . . . . . . . . . .2-2
● How it works . . . . . . . . . . . . . . .2-4
● Fuel train features
and controls . . . . . . . . . . . . .2-6
● Specifications: GasTrac . . . . . . .2-8
● Specifications: Exhaust flue . . .2-9
● Specifications: Main power
supply wire . . . . . . . . . . . . . .2-9
DESCRIPTION
Page 12
The GasTrac Process Air Heater is a stand-alone, gas-fired heater designed to replace the electric process air heater in an existing dehumidifying dryer or crystalizer. The GasTrac allows plastics processors to convert existing electric equip­ment to a less-expensive gas source.
The GasTrac contains a metal-ceramic burner, heat exchanger, combustion system and temperature controller to set and maintain the temperature of the air entering a drying hopper. The host dryer’s desiccant beds dry the air. The host dryer’s process blower circulates air through the GasTrac heat exchanger and the hopper.
The GasTrac’s temperature controller, ignition system and burner safeguards communicate with the host dryer through a RS-485 serial interface port.
The GasTrac can be used successfully in applications that require:
● Drying of hygroscopic plastics at temperatures ranging
from 250˚ F to 350˚ F.
● Hot air drying of non-hygroscopic plastics.
● Process, or drying, air flow of 600 to 1800 cfm. Higher
or lower air flow ranges may be achieved, depending on the model of the host dryer and the GasTrac selected.
● Central drying, using an existing electric dryer with a
single GasTrac or multiple GasTrac units.
The GasTrac has been designed and configured at the factory for use with natural gas only. If you want to use a different gas fuel source, such as propane, you must contact Conair.
WHAT IS THE GASTRAC?
GasTrac Process Air Heater UGD014/0497
2-2 DESCRIPTION
TYPICAL APPLICATIONS
Page 13
TYPICAL APPLICATIONS
UGD014/0497 GasTrac Process Air Heater
DESCRIPTION 2-3
The GasTrac may be installed on a mezzanine or on the floor between the host dryer and the drying hopper. You can use flexible hose or pipe to deliver air between the host dryer, the GasTrac and the drying hopper.
Mezzanine installation
Floor installation
Page 14
HOW IT WORKS
GasTrac Gas-Fired process Air Heater UGD014/0497
2-4 DESCRIPTION
ESC SEL
Combustion
Blower
RUN
MAN
234.0
250.0
SP2
OP1
OP2
REM
HOLD
2216
ESC SEL
The GasTrac has three interfaced controls that:
● Ignite the metal-ceramic burner and monitor the GasTrac
combustion circuit.
● Heat the dry air to the setpoint temperature.
● Monitor the air temperature as it enters the drying hopper.
● Automatically adjust the mixture of combustion air and
gas to maintain the setpoint temperature.
Temperature
RTD probe at
the hopper
inlet
The Temperature Controller
You enter the setpoint temperature in the Temperature Controller on the main GasTrac control. The temperature controller monitors temperature at the drying hopper inlet. When the actual temperature must increase or decrease to maintain setpoint, this controller sends a 4 to 20 MA signal to the variable speed controller.
Burner Controller
The Burner Controller is activated when you press the RUN button on the main GasTrac control. The burner controller sends a signal to the spark igniter, which fires the metal-ceramic burner. This controller continues to monitor the fuel train, combustion blower and other combustion systems for possible problems.
Variable Speed Controller
The Variable Speed Controller automatically adjusts the speed of the combustion blower by varying the frequency and voltage of the signal. Increasing the speed increases the air-to-fuel mixture and the heat output of the burner.
4 to 20 MA
signal
varying
frequency
Page 15
HOW IT WORKS
UGD014/0497 GasTrac Process Air Heater
DESCRIPTION 2-5
100
150
200
250
300
350
400
0
50
100
150
200
50
0
100
150
200
250
300
350
400
0
50
100
150
200
50
0
The Process Air Circuit
The Combustion Air Circuit
The process blower in the host dryer sends dehumidified air into the GasTrac heat exchanger.
The heated dry air exits the GasTrac. The air is blown by the host dryer to the drying hopper.
The air is heated to the setpoint temperature as it passes over and around the burner cylinder and surrounding baffles.
The combustion blower pulls ambient air into the combustion circuit through a filter.The air is then blown to the proportional gas mixer.
1a
2
Gas and air are mixed in the proportion needed to achieve the setpoint temperature.
The GasTrac has two separate air circuits: the combustion air circuit and the process air circuit.
Gas enters the fuel train.
1b
The air/gas mixture enters the burner, where it is ignited by a spark.
3
Combustion air flows through the burner cylinder and the exhaust tube bundles.
4
Combustion gases exhaust through a flue.
5
3
1
2
Page 16
GasTrac Process Air Heater UGD014/0497
2-6 DESCRIPTION
The fuel train includes two automatic and manual safety gas shutoff valves, four pressure switches, and a gas regulator and governor to assure safe feeding of gas to the combustion burn­er. The four pressure switches monitor gas pressure and process air flow. The GasTrac will automatically shut down if a pressure switch senses an unsafe condition.
FUEL TRAIN FEATURES AND CONTROLS
GasTrac horizontal models
Combustion air filter
Zero Gas Governor
controls the gas feed to the proportional mixer.
Manual burner inlet gas shut­off valve
Proportional Mixer
Mixes air and gas in the correct proportion to produce the required heat.
Combustion air pressure switch
Primary automatic safety shutoff valve
Secondary automatic safety shutoff valve
Process air differential pressure switch
Combustion air blower
Low gas pressure switch
High gas pressure switch
Gas inlet pressure gauge
Manual gas supply shutoff valve
Regulated gas pressure gauge
Gas pressure regulator
Page 17
UGD014/0497 GasTrac Process Air Heater
DESCRIPTION 2-7
GasTrac upright models
Combustion air filter
Proportional Mixer
Mixes air and gas in the correct proportion to produce the required heat.
FUEL TRAIN FEATURES AND CONTROLS
Combustion air blower
Gas inlet pressure gauge
Manual gas supply shutoff valve
Regulated gas pressure gauge
Gas pressure regulator
Zero Gas Governor
controls the gas feed to the proportional mixer.
Manual burner inlet gas shut­off valve
Primary automatic safety shutoff valve
Secondary automatic safety shutoff valve
Process air differential pressure switch
High gas pressure switch
Low gas pressure switch
Combustion air pressure switch
Page 18
SPECIFICATIONS: GASTRAC
GasTrac Process Air Heater UGD014/0497
2-8 DESCRIPTION
H
W
D
Dimensions H W D Weight Air inlet/outlet
in./cm in./cm in./cm lbs/kg diameter in./cm
CGT700HH Horizontal Model 61/154.9 37/93.9 74/187.9 1115/505.7 12/30 CGT700HV Upright Model 67/170.2 39/99 64/162.6 1115/505.7 12/30 CGT500HH Horizontal Model 61/154.9 37/93.9 64/162.6 880/399.2 8/20.3 CGT500HV Upright Model 65/165.1 39/99 64/162.6 880/399.2 8/20.3 CGT350HH Horizontal Model 54/137.2 29/73.7 66/167.6 695/315.2 8/20.3 CGT350HV Upright Model 58/147.3 31/78.7 56/142.2 695/315.2 8/20.3 Remotable GasTrac control 3.5/8.9 12.5/31.7 6/15.2 — —
W
H
W
D
CGTHH horizontal model
CGTHV upright model
H
D
Remotable
GasTrac control
CGT700 models CGT500 models CGT350 models
General
Temperature range 250-350˚F / 122-177˚C 250-350˚F / 122-177˚C 250-350˚F / 122-177˚C Maximum Flue Temperature 750˚F / 399˚C 750˚F / 399˚C 750˚F / 399˚C Combustion blower 1.5 Hp Peripheral 1 Hp Peripheral 1 Hp Peripheral Ignition source Spark igniter, interrupted Spark igniter, interrupted Spark igniter, interrupted Burner type Metal-ceramic Metal-ceramic Metal-ceramic Minimum burner capacity 150,000 BTU/hr 125,000 BTU/hr 90,000 BTU/hr Maximum burner capacity 700,000 BTU/hr 500,000 BTU/hr 350,000 BTU/hr Gas consumption 230 CFH @ 250˚F/1200 CFM 150 CFH @ 250˚F/800 CFM 105 CFH @ 250˚F/600 CFM
675 CFH @ 350˚F/1800 CFM 465 CFH @ 350˚F/1200 CFM 325 CFH @ 350˚F/800 CFM Gas pressure to regulator 10 - 20 inches of water / 2.49 - 4.98 kilopascals Gas pressure from regulator 4 - 7 inches of water / 0.99 - 1.74 kilopascals Gas heating value 1000 BTU/ft
3
Electrical
Available voltages / Total Amps
240 V/3 phase/60 Hz 4.8 A 2.5 A 2.0 A 380 V/3 phase/50 Hz 3.0 A 1.6 A 1.3 A 415 V/3 phase/50 Hz 2.7 A 1.5 A 1.2 A 480 V/3 phase/60 Hz 2.4 A 1.3 A 1.0 A
Total Kilowatts 1.9 kw 1.0 kw 0.8 kw
Emissions (all models)
Primary excess air 10% - 30% Oxygen (O2) [Ideal 3%-4%] 2% - 5% acceptable range Carbon Dioxide (CO2) 9% - 10.5% Carbon Monoxide (CO) < 10 ppm corrected to 3% O
2
NOX < 20 ppm corrected to 3% O
2
Unburned hydrocarbons < 10 ppm corrected to 3% O
2
NOTE: Elevations 3000 feet above sea level must be specified at time of purchase.
All GasTrac models meet: UL 372, UL 795, FM, CGA, AGA, NFPA 54, NFPA 79, NFPA 86 and IAS
Page 19
UGD014/0497 GasTrac Process Air Heater
DESCRIPTION 2-9
SPECIFICATIONS: MAIN POWER SUPPLY WIRE
The main power wire must be:
● Grounded and secured with a strain relief.
● Correctly sized for the current drawn.
Allowable ampacities of Copper Conductors
U.S.A. Canada European Community
75˚C insulation 90˚C insulation 70˚C insulation; 40˚C ambient air
Conductor 30˚C ambient air 40˚C ambient air Ground wire Conductor Maximum
Size AWG Maximum Full Load Amps Size AWG Size mm
2
Full Load Amps
14 15 13 14 2,5 16 12 20 17 12 4 23 10 30 27 10 6 29
8 43 47 10 10 40
NOTE: Local or regional electrical guidelines may have specifications that differ from the above national codes. You should comply with the codes for your area.
SPECIFICATIONS: EXHAUST FLUE
The Conair GasTrac is classified under the National Fuel Gas Code [ANSI Z233.1] as a Category III gas appliance. An exhaust flue is required to vent the combustion gases produced by this appliance.The purchaser is responsible for installing an exhaust flue that meets all local, regional and national codes in the installation area. For you safety, Conair recommends that you consult a licensed mechanical contrac­tor who is familiar with gas flue and ducting codes in your area.
GasTrac operating characteristics
Maximum flue temperature 750˚F / 399˚C Minimum vent size (single unit installation) CGT350: 4 in. / 10.2 cm
CGT500: 6 in. / 15 cm CGT700: 6 in. / 15 cm
Vent pressure at flue collar 1 to 2 in. water column
Installation recommendations
❒ Provide each GasTrac with a dedicated, vertical stack that exits the
building vertically through a rain-protected roof penetration. Limit any horizontal ducting runs to 4 feet.
❒ Use a stainless steel, fabricated chimney flue. ❒Vent size should be 6 inches in diameter. If you connect multiple
GasTrac units to a stack manifold, adjust the stack size accordingly.
❒ Static pressure at the flue collar must not exceed 1 to 2 inches water
column.
❒ Install an induced draft fan between the GasTrac exhaust outlet and
stack ducting, if you have more than 1 to 2 inches water column pres­sure at the flue collar while the GasTrac is operating.
Page 20
Page 21
3-1
UGD014/0497 GasTrac Process Air Heater
● Unpacking the boxes . . . . . . . . .3-2
● Preparing for installation . . . . . .3-3
● Installing the GasTrac . . . . . . . .3-4
● Replacing the host dryer’s
process air heater . . . . . . . . .3-4
● Installing the exhaust flue . . . . .3-5
● Connecting process air lines . .3-6
● Connecting the gas supply . . . .3-6
● Connecting the main power . . .3-7
● Installing the RTD probe . . . . . .3-7
●Testing the installation . . . . . . . .3-8
INSTALLATION
Page 22
UNPACKING
THE
BOXES
GasTrac Process Air Heater UGD014/0497
3-2 INSTALLATION
Carefully remove the GasTrac and components
from their shipping containers.
Remove all packing material, protective paper, tape
and plastic. Be sure to examine packing material before discarding. What looks like filler may contain parts, hard­ware or instructional materials.
Carefully inspect all components. Make sure you
have the correct model and all necessary hardware. Check for any damage that may have occurred during shipping. If you do find freight damage, you should immediately file a damage claim against the delivering carrier.
Take a moment to record serial numbers, electri-
cal power and gas specifications in the blanks provided on the back of the User Guide title page. This information will be helpful if you ever need service or parts.
You are now ready to begin installation.
Follow all preparation steps beginning on the next page.
1
2
3
4
5
Optional Remote Control Bracket
If you ordered the optional bracket for mounting the GasTrac control in a remote location, see the Appendix for installation instructions.
Exhaust
flue elbow
Exhaust
flue Tee
1 “V” clamp
2 “V”
clamps
Temperature probe (RTD)
Exhaust
flue Tee
Temperature probe (RTD)
The GasTrac Process Air Heater arrives assembled. The RTD temperature probe is packaged inside the electrical enclosure. Depending on the model and options ordered, you also should receive boxes containing V clamps and piping to attach the GasTrac exhaust to a customer-installed flue.
CGT horizontal model
CGT upright model
Page 23
Select a location for the GasTrac. The location:
❒
Should be between the host dryer and the hopper.
For minimal heat loss, the GasTrac should be no more than 10 feet from the drying hopper. The GasTrac control must be within 10 feet of the drying hopper inlet, unless optional cable extensions for the RTD temperature probe have been purchased.
❒ Must allow for installation of an exhaust flue that
meets all local, regional and national codes. Ideally, each GasTrac should have a dedicated vertical stack that exits the building through a rain-protected roof penetration.
❒ Must provide minimum clearance for safe operation
and maintenance. For efficient combustion, you must not obstruct air flow around the unit.
Install electrical power to the selected location.
The GasTrac requires a grounded, three-phase power source. Check the GasTrac’s serial tag for the correct amps, voltage and cycles for your model. All electrical wiring should be completed by qualified personnel and should comply with government codes in your region.
Install gas piping to the selected location.
Gas delivery piping should be sized to provide the rated gas flow to the GasTrac at a delivery pressure of about 12 inches water column (about
1
/2psig). All gas piping should be completed by qualified personnel and should comply with government codes in your region.
PREPARING FOR INSTALLATION
UGD014/0497 GasTrac Process Air Heater
INSTALLATION 3-3
WARNING: Follow instructions carefully.
Incorrect installation of this product can result in a fire, explosion or other hazards causing proper ty damage, severe personal injury or loss of life. Only licensed electrical/mechanical contractors, or indi­viduals experienced with the installation of natural gas piping, process air ducting, thermal insulation and exhaust ducting, should install the GasTrac.
!
1
3 feet
5 feet
2 feet
2 feet
3 ft.
18 inches
3 feet
5 feet
2 feet
2 feet
2
3
NOTE: For reliable longterm
performance, the gas supply line should include:
❒
A water trap to collect
water condensing in the gas line.
❒
An in-line, basket-type fil-
ter to collect rust, pipe scale or welding slag.
Page 24
Move the GasTrac to the selected location.
Be sure to position the GasTrac so that you can easily:
❒ Connect the gas and main power supplies. ❒ Install the flue stack. ❒ Connect process air hoses or lines between the host
dryer, GasTrac and drying hopper.
Secure the GasTrac to the mounting surface.
We have provided 1 3/8-inch diameter holes in the base of the GasTrac for bolting the unit to a mounting surface.
You must disconnect the host dryer’s process heater because the GasTrac replaces it. You will need the wiring diagrams and instruction manuals for your host dryer to determine which wires to disconnect and which air lines to remove or reroute.
Disconnect and lock out power to the host dryer.
If the dryer has been operating recently, wait for
the dryer too cool down before continuing to Step 2.
Disconnect the electrical wires between the host
dryer control and the process heating elements.
Disconnect and reroute the process air lines.
The host dryer’s process air outlet must be connected to the GasTrac instead of the drying hopper. To reduce the pressure drop in the process air circuit, you may need to remove the process heater or reroute process air lines with­in the dryer to bypass the process heater. Refer to the man­uals and diagrams that came with your dryer.
INSTALLING THE GASTRAC
GasTrac Process Air Heater UGD014/0497
3-4 INSTALLATION
WARNING:You are responsible for the structural integrity of this installation.
If you are installing the GasTrac on a mezzanine, the host dryer or another device, be sure that the mounting surface can support the weight of the GasTrac. See the specification tables for weights.
!
CAUTION: Use a suitable lifting device to move the GasTrac.
The GasTrac models weigh up to 1,400 pounds. Always use a for klift or other suitable lifting device to move the unit.The GasTrac has been equipped with forklift rails.
!
1
2
DISCONNECTING
THE
DRYER’S PROCESS AIR HEATER
1
2
3
Page 25
The GasTrac is a forced draft system, using a variable speed combustion blower and a sealed combustion chamber. The tem­perature of combustion gases in the flue can reach 750˚ F.
Install the exhaust ducting and flue.
Consult government codes and a qualified mechanical con­tractor for detailed installation instructions and assistance. See the
SPECIFICATIONS pages of this User Guide for GasTrac
operating characteristics and general recommendations.
Connect the flue to the GasTrac’s exhaust outlet.
Attach the T pipe to the GasTrac’s exhaust outlet using the V clamp provided. Connect the T pipe to the exhaust flue. On an upright model, you must attach the elbow to the exhaust outlet before connecting the T pipe and flue.
Insulate the flue and exhaust T assembly.
Exhaust flue and T temperatures can reach 750˚ F.
Install a condensate trap and drain.
Condensate occurs where flue gases cool below their dew point. This condensate can be highly corrosive. Draining and disposal should be done in compliance with applicable safety and environmental codes in your area.
INSTALLING THE EXHAUST FLUE
UGD014/0497 GasTrac Process Air Heater
INSTALLATION 3-5
WARNING: Do not operate the GasTrac without a properly installed exhaust flue.
You must install an exhaust flue to vent the combus­tion gases produced by the GasTrac.The installation should comply with government codes in your area and be done by a qualified mechanical contractor familiar with industrial flue and ducting systems.
!
1
2
3
4
T pipe
T pipe
V clamp
Elbow
Flue
Exhaust outlet
Condensate
drain
Flue
Condensate
drain
V clamp
Exhaust
outlet
TIP: A condensate trap and drain can be made by bending a piece of stainless steel tubing. Secure the drain to the T pipe using the appropriate compression fitting.
Page 26
The process air lines carry dehumidified air from the host dryer to the GasTrac, and from the GasTrac to the drying hop­per. These air lines can be flexible hose or pipe. The air line between the GasTrac and host dryer can be uninsulated. We recommend an insulated air line between the GasTrac and the drying hopper to minimize heat loss.
Connect the GasTrac process air inlet to the host dryer’s process air outlet. Secure the air lines with
hose or pipe clamps.
Connect the GasTrac process air outlet to the dry­ing hopper air inlet. Secure the air lines with hose or
pipe clamps.
CONNECTING PROCESS AIR LINES
GasTrac Process Air Heater UGD014/0497
3-6 INSTALLATION
NOTE: Do not allow
the flexible hoses to kink or crimp.
1
2
CONNECTING
THE
GAS SUPPLY
WARNING: For your safety, we recommend that
these steps be completed by a qualified mechanical contractor in compliance with all applicable natural gas codes in your region.
!
Check all gas lines for leaks. Use a gas detecting
device or apply soapy water around pipe and fittings.
Purge the gas lines after pipe and fittings are known
to be free of leaks. The lines must be free of air, rust, scale, pipe dope and welding slag.
Connect the gas supply line to the inlet on the
GasTrac fuel train. Make sure that a water trap and inline basket filter has been installed on the supply line.
1 2
GAS INLET FITTING SIZES
Model NPT size CGT350 3/4 in. CGT500
3
/4in.
CGT700 1 in.
Process air
from dryer
Process air
to hopper
Process air
to hopper
Gas supply
inlet
Upright model
Horizontal model
3
Page 27
Open the GasTrac electrical enclosure.
Turn the disconnect dial on the GasTrac’s door to the Off position. Turn the captive screw, and swing the door open.
Insert the main power
wire through the knockout in
the electrical enclosure. Secure the wire with a rubber compression fitting or strain relief.
Connect the power wires
to the three terminals
at the top of the disconnect holder.
Connect the ground wire to either grounding
point shown in the diagram.
CONNECTING MAIN POWER
UGD014/0497 GasTrac Process Air Heater
INSTALLATION 3-7
4
CAUTION: Electrical hazard.
Always disconnect and lock out the main
power sources before making electrical connections. Electrical connections should be made only by qualified personnel.
IMPORTANT:
Always refer to the wiring diagrams that came with the GasTrac for the most accurate information about electrical com­ponents and connections.
O
1
2
3
Honeywell
ESCSEL
INSTALLING THE RTD PROBE
The RTD probe monitors the temperature of the drying air as it enters the hopper. If the probe is not installed correctly, tem­perature readings will be inaccurate.
Insert the probe in the delivery air inlet
of the hopper. The end of the probe must not touch the walls of the inlet pipe. Most hoppers provide a hole that is compat­ible with the probe’s
1
/8-inch
NPT compression fitting.
Plug the probe’s cable into the GasTrac control
box. Coil any excess cable and secure with a wire tie.
1
2
Page 28
You have completed the installation. Now its time to make sure everything works. Qualified electrical and mechanical personnel should be available during the systems check and the installation test.
Check all electrical connections.
❒ Shut off power to the unit and verify that the GasTrac
and its burner controller are adequately grounded. Inadequate grounding can cause controller error mes­sages and nuisance alarms.
❒ With power off to the GasTrac and the host dryer, verify
that all terminal connections are tight and all new wiring has adequate strain relief.
Check gas piping and ducting.
❒ Verify that the gas delivery piping is rigidly supported. ❒ Verify that exhaust gas ducting is secured, adequately
insulated and free of leaks.
Check the GasTrac fuel train for leaks.
Turn on the gas supply to the GasTrac. Open the primary gas shutoff valve. Use a gas leak detection device or a squirt bottle of soapy water to detect leaks around gas pipe and fitting joints. Open the secondary gas shutoff valve, and continue checking for leaks using the same procedure.
Start the host dryer.
Monitor the dryer during the first few minutes of operation to verify that the start-up operating sequences are correct.
Turn on the gas supply to the GasTrac.
All manual shut-off valves in the gas supply line and the GasTrac fuel train must be in the open position. Before proceeding, use a detection device or soapy water to check for gas leaks in the GasTrac fuel train.
Turn on main power to the GasTrac.
Turn the main disconnect dial to the I or ON position. If everything is installed correctly:
◆ The variable speed control’s display will
illuminate.
GAS AND ELECTRICAL SYSTEM CHECKS
GasTrac Process Air Heater UGD014/0497
3-8 INSTALLATION
1
2
3
WARNING: Be sure lines are free of leaks.
To prevent accident or injury, all gas lines, including the GasTrac’s factor y-mounted gas train, should be checked for leaks before firing the burner.
TESTING THE INSTALLATION
1
2
3
I
Page 29
Press the Power switch to ON.
◆ The Power ON/OFF switch illuminates.
◆ The temperature controller begins a 3-second self-test.
The display will flash between
STANDBY and the set-
point temperature.
◆ The Burner Controller begins a 10-second initiation,
which ends when the display indicates
STANDBY.
Set the drying temperature.
Press the the up or down arrow on the temperature con­troller until 250˚F appears in the lower display.
Press the RUN button.
◆ The green RUN light will illuminate after the Burner
Controller finishes initializing.
◆ The combustion blower will start and run for 90 sec-
onds to purge any residual gas from the burner.
◆ After the 90-second purge, the burner will ignite on low
fire (low blower speed) for about 15 seconds. The burn­er will alternate between high and low fire as required to maintain the setpoint temperature.
Verify the combustion blower is rotating in the correct direction.
The combustion blower uses three-phase blower. Hold a strip of paper or piece of string near the blower inlet filter. If the paper or string blows away from the filter, the blow­er is rotating in the wrong direction. Stop the GasTrac. Disconnect and lock out the main power source. Reverse any two incoming electrical leads on the blower and repeat the test procedure.
Allow the actual temperature to reach setpoint. Press the STOP button.
◆ The green RUN indicator light turns off.
◆ The gas inlet valves should close.
◆ The combustion blower should stop.
◆ The burner and temperature controllers should display
STANDBY.
Allow the actual temperature to reach setpoint.
TESTING THE INSTALLATION
UGD014/0497 GasTrac Process Air Heater
INSTALLATION 3-9
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
5
6
4
4
5
6
7
6
8 9
10
BURNER START UP NOTE:
If the burner fails to ignite and the red alarm light illumi­nates, there may still be air in the gas lines. Check the burner controller display. If the alarm LED is illuminated, press the reset button on the front of the electrical enclo­sure. If not, refer to the T
ROUBLESHOOTING
section of the User Guide and the burner controller manual.
Page 30
Page 31
4-1
UGD014/0497 GasTrac Process Air Heater
● GasTrac operating features . . . .4-2
●The GasTrac control . . . . . . . . . .4-3
●To start dr ying . . . . . . . . . . . . . .4-4
●To stop drying . . . . . . . . . . . . . .4-5
OPERATION
Page 32
GASTRAC OPERATING FEATURES
GasTrac Process Air Heater UGD014/0497
4-2 OPERATION
ESC SEL
Cooling Exhaust Filter
Prevents contaminants from entering the elec­trical enclosure through the exhaust vent.
The GasTrac Control
This is the primary operating control.You turn the GasTrac on or off, enter the set­point drying temperature and start or stop the GasTrac using this remotable control. A green light indicates the GasTrac is running. A red light indicates an alarm condition.
Main Power Disconnect Switch
Turn the lockable dial to provide or disconnect electrical power to the GasTrac.
The OPERATING section introduces the GasTrac operating fea- tures and explains how to use the primary GasTrac control to start and stop drying. For detailed information about the Temperature, Burner and Variable Speed Controllers, see the manufacturer’s manuals in the instruction packet.
Electrical Enclosure Cooling Fan and Filter
Draws outside air through the enclosure to cool electrical com­ponents.
Process High Temperature Limit Switch
Shuts down the GasTrac when the process, or drying, tempera­ture exceeds 450˚F.
Flue Gas High Temperature Limit Switch
Shuts down the GasTrac when the combustion exhaust temperature exceeds 800˚F.
High Temperature Limit Switch Reset Button
Push to reset the flue gas and process high temperature limit switches.
Burner Controller
The Burner Controller is activated when you press the RUN button on the main GasTrac control. The burner controller sends a signal to the spark igniter, which fires the metal-ceramic burner.This con­troller continues to monitor the fuel train, combustion blower and other combustion components for possible problems.
Variable Speed Controller
The Variable Speed Controller automati­cally adjusts the speed of the combustion blower by var ying the frequency and volt­age of the signal. Increasing the speed increases the air-to-fuel mixture and the heat output of the burner.
Page 33
UGD014/0497 GasTrac Process Air Heater
OPERATION 4-3
THE GASTRAC CONTROL
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
The GasTrac control is the primary operator interface. This control may have been mounted in a remote location.
Run Button
Push to start the GasTrac.
Emergency Stop Button
Push to shutdown the GasTrac during an emer­gency. Pull to restore power before restarting.
Alarm Light
An illuminated light Indicates the GasTrac has shutdown on an alarm condition. The Trouble­shooting section will help you identify and correct the problem.
Run Light
An illuminated light indicates the GasTrac is operating.
Power On/Off
This switch sends power to the burner controller, the GasTrac control and the process and safeguard relay devices The switch illumi­nates when power is ON.
Temperature Controller
OP1: Indicates the variable frequency controller output is active.
SP2: Indicates the controller will control to setpoint #2 when in automatic mode.
MAN: Indicates the controller is being manually operated by the operator.
Actual temperature
Setpoint temperature
Page button
Press to select parameter lists during setup and configuration of the controller.
Scroll button
Press to scroll through parameter lists to select a parameter to modify.
Down button
Press to decrease a value or scroll down through a list.
Up button
Press to increase a value or scroll up through a list.
See the Eurotherm Temperature Controller manual in the instruction packet for a full description of alarm messages, programming modes and parameters.
Stop Button
Push to stop the GasTrac.
2216
OP1
OP2
234.0
SP2
REM
250.0
RUN
HOLD
MAN
Page 34
The temperature controller is factory configured to start and operate in automatic mode.
Start the host dryer.
Turn the main power disconnect to the
I or ON position.
◆ The variable speed controller turns on.
Press the Power switch to ON.
◆ The Power ON/OFF switch illuminates.
◆ The temperature controller begins a 3-second self-test.
The display will flash between
STANDBY and the setpoint
temperature.
◆ The Burner Controller begins a 10-second initiation,
which ends when the display indicates
STANDBY.
Set the drying temperature.
Press the the up or down arrow on the temperature controller until the recom­mended drying temperature appears in the lower display.
Press the RUN button.
◆ The green RUN light will illuminate after the Burner
Controller finishes initializing.
◆ The combustion blower will start and run for 90 sec-
onds to purge any residual gas from the burner.
◆ After the purge, the burner will ignite on low fire (low
blower speed) for about 15 seconds. The burner will alternate between high and low fire as required to main­tain the setpoint temperature.
TO START DRYING
GasTrac Process Air Heater UGD014/0497
4-4 OPERATION
1 2
3
4
5
4
5
3
NOTE: The temperature units were set at the
factory in ˚F or ˚C, as specified in the order.
To see which temperature unit was set:
Press the button once. F or C will be displayed.
To change the temperature unit:
See the Eurotherm Temperature Controller manual
235.0
250.0
RUN HOLD
MAN
2216
OP1 OP2 SP2 REM
OP1
OP2
234.0
SP2
REM
250.0
MAN
RUN
HOLD
I
2216
Page 35
UGD014/0497 GasTrac Process Air Heater
OPERATION 4-5
TO STOP DRYING
Press the red STOP button.
◆ The green indicator light turns off.
◆ The gas inlet valves should close.
◆ The combustion blower should stop.
Press the ON/OFF switch to OFF.
◆ The burner control turns off.
◆ The temperature controller turns off.
Turn the main power disconnect off.
◆ The variable speed control display remains lit for a brief period. Then it becomes blank.
Turn the host dryer off after at least 2 minutes.
1
2
3
4
1
2
IMPORTANT: Do not shut down the host dr yer before
stopping the GasTrac. After stopping the GasTrac, allow the host dryer’s
process blower to continue running for a minimum of 2 minutes.This prevents excessive heat from building up in the GasTrac.
O
CAUTION:Voltage present
Some voltage will be present in the vari­able speed drive for a brief period after power has been turned off.When the volt­age is gone, the variable speed control display will become blank.
235.0
250.0
RUN HOLD
MAN
2216
OP1 OP2 SP2
REM
Page 36
Page 37
5-1
UGD014/0497 GasTrac Process Air Heater
● Maintenance checklist . . . . . . . .5-2
● Cleaning the combustion
air filter . . . . . . . . . . . . . . . . . . .5-3
● Cleaning the electrical
enclosure filters . . . . . . . . . . . .5-3
● Replacing the spark igniter . . . .5-4
● Cleaning the ultraviolet
flame detector . . . . . . . . . . . . .5-6
● Cleaning the burner
sight glass . . . . . . . . . . . . . . . .5-6
MAINTENANCE
Page 38
PREVENTATIVE MAINTENANCE CHECKLIST
GasTrac Process Air Heater UGD014/0497
5-2 MAINTENANCE
Routine maintenance will ensure optimum operation and per­formance of the GasTrac. We recommend the following main­tenance schedule and tasks.
● Weekly, or as often as needed
❒ Clean the GasTrac combustion air filter.
You may need to clean the filter more often than weekly. Frequency depends on the amount of dust in your facility’s air.
❒ Clean the GasTrac electrical enclosure filters.
You may need to clean the filters more often than weekly. Frequency depends on the amount of dust in your facility’s air.
● Monthly
❒ Inspect air hoses and hose connections.
Check for damage, kinks or loose hose clamps. Replace any hoses that show signs of damage or wear. Reposition and tighten loose hose clamps.
❒ Inspect and test safety controls.
Fuel safety shutoff valves, combustion safeguards and temperature and pressure switches should be inspected and tested by trained personnel.
❒ Inspect the burner sight glass.
Clean the sight glass, if needed. Replace the sight glass if you see cracks or any other defect.
● Every six months
❒ Inspect the GasTrac metal-ceramic burner.
While the unit is fired, look through the sight glass at the burner. The burner surface should be glowing orange with an even flame. Blue flames, flames projecting from the burner surface, or cracks or dark spots on the burner surface indicate damage. You may need to replace the burner.
❒ Inspect piping, wiring and electrical connections.
Check for leaks, corrosion and loose connections. Replace any component that shows signs of dam­age or wear. Tighten loose connections.
● Annually
❒ Replace the spark igniter.
To assure optimum performance, you should replace the spark igniter once a year.
❒ Clean the ultraviolet flame detector lens.
Use alcohol and a soft cloth.
Page 39
You must clean the combustion air intake filter periodically. A clogged filter reduces air flow through the combustion circuit, which reduces burner efficiency and heat output.
Stop the GasTrac.
Press the red STOP button, then press the rocker switch to
OFF.
Disconnect and lock out main power. Remove the filter shroud.
Remove the wing nut and washer that holds the shroud in place. Lift the shroud up and off.
Remove the filter.
Remove the wing nut and washer that holds the filter in place. Lift the filter up and off.
Clean the filter.
Vacuum or blow dirt and debris from the filter using vacuum or low-pressure compressed air. When using com­pressed air, blow from inside the filter toward the outside.
Reassemble .
Repeat steps 3 and 4 in reverse order to replace the filter.
CLEANING THE COMBUSTION FILTER
UGD014/0497 GasTrac Process Air Heater
MAINTENANCE 5-3
1
2 3
NOTE: Replace any
filter that has cracked end gaskets or is torn, worn or clogged with so much dirt that it cannot be cleaned.
4
5
3
4
CLEANING THE ELECTRICAL ENCLOSURE FILTERS
Periodically, you should clean the filters covering the cooling fan inlet and outlet on the electrical enclosure.
Remove the the thumb screws and filters.
Clean the filters.
Use vacuum or low-pressure com­pressed air to remove loose debris. Wash the filters in warm, soapy water, then rinse and air dry. Replace torn or worn filters.
Reassemble.
6
1
2
3
OP1 OP2 SP2 REM
235.0
250.0
RUN HOLD
MAN
2216
ESCSEL
Page 40
The spark igniter should be replaced at least once a year to assure trouble-free operation. You should replace the igniter before the annual period, if you inspect it and find:
● The spark gap is less than 0.125 inch. The gap should
be between 0.07 and 0.09 inch.
● The igniter insulation is cracked
● The spark electrodes are warped or taper to a needle-
like shape.
Do not operate the GasTrac with a worn or damaged spark igniter. A badly burned or warped igniter can cause burner ignition failure.
Stop the GasTrac.
Press the red STOP button, then press the rocker switch to
OFF.
Disconnect and lock out main power. Remove the igniter wire.
Pull the wire boot, not the wire, away from the spark igniter. If the wire or its boot is cracked, you should replace it.
Remove the spark igniter.
Use a 7⁄8 inch spark plug socket and ratchet to loosen the igniter. Pull the igniter straight out of the GasTrac. Do not allow the spark igniter to touch the burner surface.
REPLACING THE SPARK IGNITER
GasTrac Process Air Heater UGD014/0497
5-4 MAINTENANCE
1
2
3
IMPORTANT: When
removing or inserting the spark igniter, do not allow the igniter electrode or grounding rod to touch the burner.You could damage the burner surface.
3 4
4
TIP: Before removing the spark igniter for inspection,
use a felt tip marker to mark the position of the igniter in its threaded hole. By indexing the position, you will able to return the igniter to the correct position after inspection.
The igniter must be installed so that the ground rod is 180˚ away from the burner surface.
WARNING: Hot surfaces
Allow the GasTrac to cool before removing the burn­er guard to perform maintenance
OP1 OP2 SP2 REM
235.0
250.0
RUN HOLD
MAN
2216
Page 41
Mark the position of the grounding rod on the
new spark igniter, using a felt tip marker. This index mark must end up 180˚ away from the burner surface when the spark igniter is inserted and tightened. The electrode should be closest to the burner surface.
Coat the threads of the igniter with a high-temper-
ature conductive anti-seize compound.
Carefully insert the igniter into GasTrac.
Insert the igniter straight into the threaded fitting. Do not bend the electrode, and do not allow the spark igniter to touch the burner surface.
Screw the igniter into the threaded fitting.
Tighten by hand first. Then use a socket and ratchet to tighten the igniter one turn or a partial turn until the index mark on the igniter is 180˚ away from the burner surface.
Push the boot and wire onto the spark igniter.
Push until you feel the boot snap into place.
UGD014/0497 GasTrac Process Air Heater
MAINTENANCE 5-5
Electrode
Grounding rod
5
REPLACING THE SPARK IGNITER
180˚
WARNING: Do not over tighten the spark igniter.
You could damage the porcelain insulator.
6 7
8
9
Page 42
A dirty ultraviolet flame detector may fail to recognize burner ignition, which will cause the GasTrac to alarm and shut down automatically.
Stop the GasTrac.
Press the red STOP but­ton, then press the rock­er switch to
OFF.
Disconnect and lock out main power. Remove the flame detector.
Loosen the mounting nut while hold­ing the flame detector, then pull the detector away from the viewing hole.
Clean the viewing hole lens.
Use a soft cloth or cotton swab moistened with alcohol.
Replace the flame detector.
Align the detector over the viewing hole, and thread the silver mounting nut onto the coupling. Hand tighten first. Then use a wrench to tighten the nut an additional quarter turn.
GasTrac Process Air Heater UGD014/0497
5-6 MAINTENANCE
CLEANING THE ULTRAVIOLET FLAME DETECTOR
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
WARNING: Hot surfaces
Allow the GasTrac to cool before removing the burn­er guard to perform maintenance
1
2
3
4
5
CLEANING THE BURNER SIGHT GLASS
WARNING: Hot surfaces
Allow the GasTrac to cool before removing the burn­er guard to perform maintenance
A dirty sight glass prohibits inspection or viewing of the metal-ceramic burner during operation.
Stop the GasTrac. Disconnect and lock out main power.
Remove the screws on the sight glass bracket.
Clean the sight glass.
Use a clean soft cloth or cotton swab moistened with alcohol.
Coat the screw threads with
a high-temperature anti-seize com­pound.
Replace the sight glass.
Tighten the screws in the bracket to hold the glass in place.
1 2
3
4
5
Page 43
6-1
UGD014/0497 GasTrac Process Air Heater
● Before beginning . . . . . . . . . . . .6-2
● A few words of caution . . . . . . .6-2
● When an alarm occurs . . . . . . . .6-3
● How to identify the cause
of an alarm . . . . . . . . . . . . . . . .6-3
●Temperature controller
alarms . . . . . . . . . . . . . . . . . . . .6-4
● Burner controller alarms . . . . . .6-7
● Variable speed controller
alarms . . . . . . . . . . . . . . . . . . .6-10
● Flue gas high temperature
limit switch . . . . . . . . . . . . . . .6-14
● Process high temperature
limit switch . . . . . . . . . . . . . . .6-15
TROUBLESHOOTING
Page 44
BEFORE BEGINNING
GasTrac Process Air Heater UGD014/0497
6-2 TROUBLESHOOTING
You can avoid most problems by following the recommended installation and maintenance procedures outlined in this Users Guide. If you do have a problem, this section will help you determine what caused it and tell you how to fix it.
Before you begin troubleshooting:
❒ Find the wiring and assembly diagram you
received with your GasTrac. These diagrams will note any custom features such as special wiring or alarm capabili­ties not covered in the User Guide.
❒ Find the instruction manuals and diagrams that
were shipped with the GasTrac and your host dryer.
❒ Find any installation diagrams or notes which may
have been generated at the time the GasTrac was installed.
A FEW WORDS
OF
CAUTION
WARNING: The GasTrac should be maintained
and repaired by qualified technicians who are equipped with the correct tools and are experi­enced in the maintenance and repair of industrial gas appliances.
WARNING: Hot surfaces.
Temperatures inside the GasTrac can reach more than 800˚ F. Always shut down the GasTrac and host dryer and wait for them to cool before ser­vicing.
WARNING: Disconnect and lock out main
power before servicing.
The GasTrac is connected to high voltage. Always disconnect and lock out the main power source to the GasTrac before servicing. Also dis­connect and lock out the main power to the host dryer before servicing the GasTrac. Failure to dis­connect and lock out this voltage source could result in severe personal injury.
WARNING: Shut off main gas supply and
purge heat exchanger and gas lines before servicing.
Failure to eliminate this potential source of a gas leak could result in severe damage, personal injury or loss of life.
Page 45
When there is a problem with the GasTrac the alarm light will illuminate and the GasTrac will shutdown.
WHEN AN ALARM OCCURS
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-3
HOW TO IDENTIFY THE CAUSE OF AN ALARM
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
Alarm light
The single alarm may be caused by any one of five major control components or another device within the GasTrac.
Check the controllers for alarm messages.
Causes of the more probable alarm messages can be found in this section of the User Guide. If you don’t find the alarm message here, then see the manufacturer’s man­ual for that particular controller. These manuals can be found in the instruction packet that came with your GasTrac.
Check the limit switches for contact closure.
Possible causes of switch failure can be found in this section of the User Guide.
Check the GasTrac electrical and gas systems.
These checks should be performed only by trained electri­cal and gas technicians equipped with the proper tools.
Control components and indications of failure:
●
Temperature controller
Displays a flashing alarm message.
●
Burner controller
Displays a flashing alarm message.
●
Variable speed controller
Displays a flashing alarm message.
●
Process outlet high temperature limit switch
Ver ify switch contact closure.
●
Flue gas high temperature limit switch
Ver ify switch contact closure.
1
2
3
Page 46
TEMPERATURE CONTROLLER ALARMS
GasTrac Process Air Heater UGD014/0497
6-4 TROUBLESHOOTING
Alarm
Deviation Band
The drying, or process circuit, tem­perature is higher or lower than the set­point alarm band allows.
Sensor Break
The sensor input for RTD temperature probe has failed.
Possible cause
Is something blocking or restricting the flow of drying, or process, air?
Is the RTD temperature probe installed correctly?
Is the temperature range for the deviation band too narrow?
Is the RTD temperature probe connection loose or incorrectly installed?
Is the RTD temperature probe damaged?
Solution
❒ Check the process filter in the host dryer. Clean or replace the filter if it is clogged or damaged. ❒ Check the process air hoses for leaks, crimps, blockage or loose connections. Remove obstructions. Repair leaks or loose connections. ❒ Check the process air blow­er in the host dryer. If it is not running correctly, see the dryer’s manual.
Make sure the sensing end of the RTD probe is positioned near the center of the process air line at the hopper inlet. Temperature readings will be incorrect if the sensing end is too close to the wall of the inlet hose or pipe.
Increase the deviation band 5˚F at a time. The default set­ting is 20˚F. To avoid nuisance alarms, do not adjust this band more than necessary.
❒ Verify that the RTD temper­ature probe is installed. ❒ Check for a loose RTD con­nection at the GasTrac control or the process air inlet of the hopper.
Replace the RTD temperature probe.
1dEV
S.br
The Temperature Controller will flash an alarm message in the upper or lower display window.
WARNING: The GasTrac should be test­ed and repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical sys­tems and industrial gas appliances.
RUN
MAN
SP2
OP1
OP2
REM
HOLD
2216
!
Page 47
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-5
Alarm
Loop Break
The actual drying temperature did not approach the set­point within the loop break time. There may be a problem in the combustion or process air circuit.
Power Failure
The line voltage to the Temperature Controller is too low.
Possible cause
Is something blocking or restricting the flow of drying, or process, air?
Is the GasTrac combus­tion air filter dirty?
Is the Variable Speed Controller operating cor­rectly?
Is the setpoint correct?
Is the GasTrac being sup­plied with the correct voltage?
Is there a loose or faulty connection in the electri­cal circuit?
Solution
❒ Check the process filter in the host dryer. Clean the filter, or replace it if it is damaged. ❒ Check the process air hoses for leaks, crimps, blockage or loose connections. Remove obstructions. Repair leaks or loose connections. ❒ Check the process air blow­er in the host dryer. If it is not running correctly, see the dryer’s manual.
Clean the combustion air filter. Replace the filter if it is torn or too clogged with dirt to clean.
Check the Variable Speed Controller for error or alarm messages. See the Variable Speed Controller pages in this
TROUBLESHOOTING section and in
the Allen-Bradley controller manual.
Make sure the setpoint is with­in the range specified for your GasTrac unit.
Check the main power supply to the GasTrac and the electri­cal circuits supplying power to the control panel and the tem­perature controller.
L.br
TEMPERATURE CONTROLLER ALARMS
Pwr.F
The Temperature Controller will flash an alarm message in the upper or lower display window.
WARNING: The GasTrac should be test­ed and repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical sys­tems and industrial gas appliances.
RUN
MAN
SP2
OP1
OP2
REM
HOLD
2216
!
Page 48
GasTrac Process Air Heater UGD014/0497
6-6 TROUBLESHOOTING
Alarm
The ROM self test failed.
The RAM self test failed.
Watchdog Failure
Keyboard failure.
Input Circuit Failure
Possible cause
The temperature con­troller is defective.
The temperature con­troller is defective.
The temperature con­troller is defective.
A button on the tempera­ture controller keypad is stuck or was pressed dur­ing power up.
The temperature con­troller is defective.
Solution
Replace the temperature con­troller, or return it to the facto­ry for repair.
Replace the temperature con­troller, or return it to the facto­ry for repair.
Replace the temperature con­troller, or return it to the facto­ry for repair.
Switch the power to the GasTrac control off and the on using the
POWER ON/OFF
switch. Do not touch any but­tons on the temperature con­troller.
Replace the temperature con­troller, or return it to the facto­ry for repair.
TEMPERATURE CONTROLLER ALARMS
The Temperature Controller will flash an alarm message in the upper or lower display window.
WARNING: The GasTrac should be test­ed and repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical sys­tems and industrial gas appliances.
RUN
MAN
SP2
OP1
OP2
REM
HOLD
2216
Err1
Err2
Err3
Err4
Err5
!
Page 49
BURNER CONTROLLER ALARMS
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-7
When there is a problem related to the burner or ignition, the burner controller displays a fault code and illuminates an alarm light. To restart the GasTrac after a burner controller alarm:
Press the GasTrac
STOP button.
Press the burner
RESET button.
Press the GasTrac
RUN button.
Alarm
Flame did not occur within the 4-second flame establishing period.
WARNING:
The GasTrac should be tested and repaired only by qualified techni­cians equipped with the correct tools and trained in the maintenance and repair of elec­trical systems and industrial gas appliances.
Possible cause
Is the spark igniter pro­viding a spark?
Is there a problem with the gas supply?
Is the lens of the ultravio­let sensor dirty?
Is negative pressure in the building affecting sta­tic pressure of the com­bustion exhaust flue?
Is the burner controller defective?
Solution
Restart the GasTrac while watch­ing through the sight glass. If you don’t see a spark during the 4­second ignition period:
❒ Verify there is power supplied
to the transformer during the ignition period.
❒ Check the wire and connec-
tions between the transformer and spark igniter.
❒ Check the spark igniter.
Replace if damaged.
If the burner fails to light even though you can see a spark:
❒ Verify that the gas supply is
on and that the gas shutoff valves are open during the ignition period.
❒ Restart the GasTrac 4 or 5
times to purge any air that may be in the gas lines.
❒ Verify that the gas pressure
regulator is set to supply the correct pressure.
If the burner ignites and then goes out, check
the lens for dirt.
Clean if necessary. Verify that the static pressure of
the combustion exhaust flue is 1 to 2 inches of water column. If not, you may need to add a draft fan to the flue to create the cor­rect static pressure.
If none of the solutions above can resolve the problem, you may need to replace the burner con­troller.
1 2
3
LOCKOUT #16
*Flame Out Timer*
!
Page 50
GasTrac Process Air Heater UGD014/0497
6-8 TROUBLESHOOTING
Alarm
The main flame failed after
RUN was
pushed and the flame had been established for at least 10 seconds.
WARNING:
The GasTrac should be tested and repaired only by qualified techni­cians equipped with the correct tools and trained in the maintenance and repair of elec­trical systems and industrial gas appliances.
Possible cause
Are the gas shutoff valves open?
Did the ultraviolet flame detector fail to send an adequate signal?
Are the safety pressure switches malfunctioning or detecting incorrect pressures?
Is the gas pressure regu­lator adjusted correctly?
Solution
❒ Verify that the manual gas
shutoff valves are open.
❒ Verify that the automatic gas
shutoff valves remain open after burner ignition. If automatic shutoff valves are not opening, check the sole­noid electrical connections.
During operation, the flame signal should fluctuate between 1.25V and 5V D.C. ❒ Verify that the ultraviolet
flame detector lens is clean.
❒ Check for blockage in the
cooling air line between the ultraviolet sensor and com­bustion air blower. The tem­perature at the sensor must be less than 215˚F.
❒ The sensor or flame amplifi-
er may need to be replaced.
Reset the GasTrac, press
RUN
and check the LED lights on the process air, combustion air, low gas and high gas pressure switches during the 90-second purge cycle. If a light is not green, check for leaks, block­age or other problems that could interfere with air or gas flow detected by that switch.
Make sure the gas pressure regulator is adjusted to supply the pressure outlined in the
S
PECIFICATIONS pages.
BURNER CONTROLLER ALARMS
When there is a problem related to the burner or ignition, the burner controller displays a fault code and illuminates an alarm light. To restart the GasTrac after a burner controller alarm:
Press the GasTrac
STOP button.
Press the burner
RESET button.
Press the GasTrac
RUN button.
1 2
3
LOCKOUT #17
*Main Flame Fail*
!
Page 51
BURNER CONTROLLER ALARMS
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-9
Alarm
OR
WARNING:
The GasTrac should be tested and repaired only by qualified techni­cians equipped with the correct tools and trained in the maintenance and repair of elec­trical systems and industrial gas appliances.
Possible cause
Is the combustion blower intake filter clogged?
Are the safety pressure switches malfunctioning or detecting incorrect pressures?
Did the airflow interlock fail closed?
Solution
Clean the filter. Replace the filter if it is worn, torn or so clogged with dirt that it can’t be cleaned.
Reset the GasTrac, press
RUN
and check the LED lights on the process air, combustion air, low gas and high gas pressure switches during the 90-second purge cycle. If a light is not green, check for leaks, block­age or other problems that could interfere with air or gas flow detected by that switch.
Switch the burner controller
RUN/TEST button to TEST.
Press the
RUN button on the
GasTrac control. Measure the voltage between terminal 7 and G (ground). You should find 120V present if the interlock is working.
When there is a problem related to the burner or ignition, the burner controller displays a fault code and illuminates an alarm light. To restart the GasTrac after a burner controller alarm:
Press the GasTrac
STOP button.
Press the burner
RESET button.
Press the GasTrac
RUN button.
1 2
3
LOCKOUT #23
!
LOCKOUT #32
Page 52
VARIABLE SPEED CONTROLLER ALARMS
GasTrac Process Air Heater UGD014/0497
6-10 TROUBLESHOOTING
Alarm
Power Loss
Under Voltage
Over Voltage
Motor Stall
Possible cause
DC Bus Voltage remained below 85% nominal for more than 5 seconds on power up.
DC Bus Voltage fell below the minimum.
DC Bus Voltage exceeded the maximum.
Motor has stalled.
Solution
Check for proper incoming AC voltage.
Check for low incoming AC voltage or power interruption. The under voltage trip point for 200-240 VAC units is: 210 VDC, which is equal to 150 VAC incoming voltage. The under voltage trip point for 380-460 VAC units is: 390 VDC, which is equal to 275 VAC incoming voltage.
Bus over voltage may be caused by motor regeneration. Check for high incoming AC voltage. The over voltage trip point for 200-240 VAC units is: 410 VDC, which is equal to 290 VAC incoming voltage. The under voltage trip point for 380-460 VAC units is: 815VDC, which is equal to 575 VAC incoming voltage.
Check for physical or mechan­ical blockage of the combus­tion blower fan.
07 03
07 04
07 05
07 06
ESC SEL
When a problem occurs, the variable speed controller displays the parameter 07 and a two-digit fault code. You must correct the problem before restarting the GasTrac. To restart after an alarm:
Turn the power disconnect
OFF then ON.
Press the GasTrac
RUN button.
1 2
WARNING: The GasTrac should be tested and
repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical systems and industrial gas appliances.
!
Fault code
Page 53
UGD014/1097 GasTrac Process Air Heater
TROUBLESHOOTING 6-11
Alarm
Motor Overload
Over Temperature
Over current
EEPROM Fault
Possible cause
The internal electronic overload tripped.
Excessive heat was detected in the variable speed control.
Excessively high current was detected in the hard­ware trip circuit.
The controller EEPROM has invalid data.
Solution
❒ Check for physical or
mechanical blockage of the combustion blower fan.
❒ Check for a faulty combus-
tion blower motor.
❒ Clean the air filters on both
sides of the GasTrac electri­cal enclosure. Verify that the cooling fan in the electrical enclosure is operating cor­rectly.
❒ Check for dirty or blocked
heat sink passages or a faulty fan inside the variable speed controller.
❒ Check for a short circuit at
the variable speed control output.
❒ Check for physical or
mechanical blockage of the combustion blower fan.
Reset EEPROM. See Resetting Factory Defaults in the Allen Bradley variable speed con­troller manual.
07 07
07 08
07 12
07 32
VARIABLE SPEED CONTROLLER ALARMS
ESC SEL
When a problem occurs, the variable speed controller displays the parameter 07 and a two-digit fault code. You must correct the problem before restarting the GasTrac. To restart after an alarm:
Turn the power disconnect
OFF then ON.
Press the GasTrac
RUN button.
1 2
WARNING: The GasTrac should be tested and
repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical systems and industrial gas appliances.
!
Fault code
Page 54
GasTrac Process Air Heater UGD014/1097
6-12 TROUBLESHOOTING
Alarm
Phase U Fault
Phase V Fault
Phase W Fault
Phase UV Short Fault
Phase UW Short Fault
Possible cause
The controller has detect­ed a phase U-to-ground fault between the con­troller and combustion blower motor.
The controller has detect­ed a phase V-to-ground fault between the con­troller and combustion blower motor.
The controller has detect­ed a phase W-to-ground fault between the con­troller and combustion blower motor.
Excessive voltage was detected between the U and V controller output phases.
Excessive voltage was detected between the U and W controller output phases.
Solution
❒ Check the wiring between
the control and motor for damage or incorrect connec­tions.
❒ Make sure the motor ground
is wired correctly.
❒ Check the wiring between
the control and motor for damage or incorrect connec­tions.
❒ Make sure the motor ground
is wired correctly.
❒ Check the wiring between
the control and motor for damage or incorrect connec­tions.
❒ Make sure the motor ground
is wired correctly.
❒ Check for a shorted condi-
tion in the wiring to the controller.
❒ Check motor wiring for a
shorted condition.
❒ Check for a shorted condi-
tion in the wiring to the controller.
❒ Check motor wiring
07 38
07 39
07 40
07 41
07 42
VARIABLE SPEED CONTROLLER ALARMS
ESC SEL
When a problem occurs, the variable speed controller displays the parameter 07 and a two-digit fault code. You must correct the problem before restarting the GasTrac. To restart after an alarm:
Turn the power disconnect
OFF then ON.
Press the GasTrac
RUN button.
1 2
WARNING: The GasTrac should be tested and
repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical systems and industrial gas appliances.
!
Fault code
Page 55
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-13
Alarm
Phase VW Short Fault
Power Test Fault
Possible cause
Excessive voltage was detected between the V and W controller output phases.
An electrical fault was detected during the initial start-up sequence.
Solution
❒ Check for a shorted condi-
tion in the wiring to the controller.
❒ Check motor wiring ❒ Check wiring to the con-
troller..
❒ Check wiring to the motor.
07 43
07 48
VARIABLE SPEED CONTROLLER ALARMS
ESC SEL
When a problem occurs, the variable speed controller displays the parameter 07 and a two-digit fault code. You must correct the problem before restarting the GasTrac. To restart after an alarm:
Turn the power disconnect
OFF then ON.
Press the GasTrac
RUN button.
1 2
WARNING: The GasTrac should be tested and
repaired only by qualified technicians equipped with the correct tools and trained in the maintenance and repair of electrical systems and industrial gas appliances.
!
Fault code
Page 56
GasTrac Process Air Heater UGD014/0497
6-14 TROUBLESHOOTING
Alarm
The control panel alarm light is on, but no other controller alarm messagesor lights are displayed.
WARNING:
The GasTrac should be tested and repaired only by qualified techni­cians equipped with the correct tools and trained in the maintenance and repair of elec­trical systems and industrial gas appliances.
Possible cause
Is the temperature limit switch faulty?
Does the combustion air/fuel train need tun­ing?
Solution
Push the reset button on the GasTrac electrical enclosure and restart the GasTrac. If the alarm occurs again, a qualified electrician should verify that the latching alarm contacts of the flue gas high temperature limit switch are closed.
This must be done by a quali­fied technician who is trained in the maintenance of industri­al gas appliances, and who is familiar with tuning proce­dures outlined in the various controller, valve and switch manuals that came with the GasTrac.
If the alarm persists, call the Conair Service Department.
The flue gas high temperature switch monitors the tempera­ture of a type J thermocouple mounted in the flue gas outlet. When the combustion exhaust gas temperature exceeds 800˚F, the GasTrac shuts down and the alarm light illuminates.
FLUE GAS HIGH TEMPERATURE LIMIT SWITCH
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
alarm light
!
Page 57
UGD014/0497 GasTrac Process Air Heater
TROUBLESHOOTING 6-15
Alarm
The control panel alarm light is on, but no other controller alarm messagesor lights are displayed.
WARNING:
The GasTrac should be tested and repaired only by qualified techni­cians equipped with the correct tools and trained in the maintenance and repair of elec­trical systems and industrial gas appliances.
Possible cause
Is something blocking or restricting the flow of drying, or process, air?
Is the drying temperature setpoint incorrect?
Is the temperature limit switch faulty?
Is the temperature con­troller faulty?
Solution
❒ Check the process filter in the host dryer. Clean or replace the filter if it is clogged or damaged. ❒ Check the process air hoses for leaks, crimps, blockage or loose connections. Remove obstructions. Repair leaks or loose connections. ❒ Make sure the process air blower in the host dryer is run­ning correctly.
Check the setpoint on the tem­perature controller. Enter a new setpoint, if necessary. Press the reset button on the GasTrac electrical enclosure and restart the GasTrac.
Press the reset button on the GasTrac electrical enclosure and restart the GasTrac.If the alarm occurs again, a qualified electrician should verify that the latching alarm contacts of the process high temperature limit switch are closed.
If the alarm persists, replace the temperature controller.
The process high temperature switch monitors the temperature of a type J thermocouple mounted in the GasTrac process air outlet. If the process air outlet temperature exceeds 450˚ F, the GasTrac shuts down and the alarm light illuminates.
RUN
MAN
235.0
250.0
SP2
OP1 OP2
REM
HOLD
2216
alarm light
PROCESS HIGH TEMPERATURE LIMIT SWITCH
!
Page 58
Page 59
IMS0002/0797 SERVICE INFORMATION
APPENDIX A-1
Conair has made the largest investment in customer sup­port in the plastics industry. Our service experts are avail­able to help with any problem you might have installing and operating your equipment. Your Conair sales represen­tative also can help analyze the nature of your problem, assuring that it did not result from misapplication or improper use.
To contact Customer Service personnel, call:
From outside the United States, call:
814-437-6861
You can commission Conair service personnel to provide on-site service by contacting the Customer Service Department. Standard rates include an on-site hourly rate, with a one-day minimum plus expenses.
If you do have a problem, please complete the following checklist before calling Conair:
❒ Make sure you have all model, serial and parts list
numbers for your particular equipment. Service personnel will need this information to assist you.
❒ Make sure power is supplied to the equipment. ❒ Make sure that all connectors and wires within
and between control systems and related components have been installed correctly.
❒ Check the troubleshooting guide of this manual
for a solution.
❒ Thoroughly examine the instruction manual(s)
for associated equipment, especially controls. Each manual may have its own troubleshooting guide to help you.
❒ Check that the equipment has been operated as
described in this manual.
❒ Check accompanying schematic drawings for
information on special considerations.
BEFORE YOU CALL ...
H
OW TO CONTACT
CUSTOMER SERVICE
Additional manuals and prints for your Conair equipment may be ordered through the Customer Service or Parts Departments for a nominal fee.
WE’RE HERE
T O
HELP
Page 60
WARRANTY INFORMATION IMS0003/0796
APPENDIX A-2
EQUIPMENT GUARANTEE
PERFORMANCE WARRANTY
WARRANTY LIMITATIONS
Conair guarantees the machinery and equipment on this order, for a period as defined in the quotation from date of shipment, against defects in material and workmanship under the normal use and service for which it was recom­mended (except for parts that are typically replaced after normal usage, such as filters, liner plates, etc.). Conair’s guarantee is limited to replacing, at our option, the part or parts determined by us to be defective after examination. The customer assumes the cost of transportation of the part or parts to and from the factory.
Conair warrants that this equipment will perform at or above the ratings stated in specific quotations covering the equipment or as detailed in engineering specifications, provided the equipment is applied, installed, operated and maintained in the recommended manner as outlined in our quotation or specifications.
Should performance not meet warranted levels, Conair at its discretion will exercise one of the following options:
● Inspect the equipment and perform alterations or
adjustments to satisfy performance claims. (Charges for such inspections and corrections will be waived unless failure to meet warranty is due to misapplica­tion, improper installation, poor maintenance practices or improper operation.)
● Replace the original equipment with other Conair
equipment that will meet original performance claims at no extra cost to the customer.
● Refund the invoiced cost to the customer. Credit is
subject to prior notice by the customer at which time a Return Goods Authorization Number (RGA) will be issued by Conair’s Service Department. Returned equipment must be well crated and in proper operating condition, including all parts. Returns must be prepaid.
Purchaser must notify Conair in writing of any claim and provide a customer receipt and other evidence that a claim is being made.
Except for the Equipment Guarantee and Performance Warranty stated above, Conair disclaims all other war­ranties with respect to the equipment, express or implied, arising by operation of law, course of dealing, usage of trade or otherwise, including but not limited to the implied warranties of merchantability and fitness for a particular purpose.
Loading...
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use