Despatch LND2-24-3 Owner's Manual

Instruction Manual for the
LND Series
P/N 116097
REV. 8/95
— C-146
US $75.00
LND Series Despatch Ovens are bench ovens to 343°C (650°F) with forced convection airflow.
Model Volts Heater watts Amps _ HZ* Phase
LND1-42 240 3,000 15.6 50/60 1
LND 2-11 208 9,000 29,8 60 3
| | 240 9,000 26.1 60 3
480 9,000 13.1 60 3
LND 2-24 208 16,000 52.4 60 3
| 240 16,000 46.0 60 3
480 16,000 60 3
23.0
* Akitis required for 240V 1 PH 50Hz operation. Units will operate ona 220V 1PH 50H: line.
Units are modified for 3PH, 50Hz operation.
Dear Customer,
Thank you for choosing Despatch Industries. We appreciate the
opportunity to work with you and to meet your heat processing needs.
We believe that you have selected the finest equipment available in the
heat processing industry.
At Despatch, our service does not end after the purchase and delivery of
our equipment. For this reason we have created the Service Products
Division within Despatch. The Service Products Division features our
Response Center for customer service. The Response Center will direct
and track your service call to ensure satisfaction.
Whenever you need service or replacement parts, contact the Response
Center at 1-800-473-7373: FAX 612-781-5353.
‘Thank you for choosing Despatch.
Sincerely,
Despatch Industries
Copyright © August 25, 1995 by Despatch Industries
PREFACE
This manual is your guide to the Despatch oven. It is organized
to give you the information you need quickly and easily.
The INTRODUCTION section provides an overview of the
Despatch oven.
The THEORY OF OPERATION section details the function
and operation of assemblies and subassemblies on the Despatch
oven.
The INSTRUCTIONS section provides directions on un-
packing, installing, operating and maintaining the Despatch
oven.
The APPENDIX section contains Special Instructions for
operating the control instrument, a Troubleshooting Table, a list
of Accessories and a Warranty.
An efficient way to learn about the oven would be to read the
manual while working with the corresponding oven control
system. This will give you practical hands-on experience with
information in the manual and the oven.
Before operating the equipment, be sure you understand all of the
technical information contained in this manual. Information
skipped, not understood or misunderstood could create the
possibility of operating the equipment in an unsafe manner. This
can cause damage to the oven or personnel or reduce the
efficiency of the equipment.
HELP-LINE
800-473-7373
Page i
PREFACE
Despatch LND Series Instruction Manual
C-148
Table of Contents
PREFACE. + oo eee eee aa aa aa aa aa anne i
Table of Contents .......00000000000000 00000000 ii
List of Hlustrations 000200000000 00000000 iv
List of Tables ....00.0000000000 00000 00H EEE iv
INTRODUCTION ......00000000 00000000 10000000 1
Special Features .........eeercecoreorcerreres 1
Specifications .......e.wrrreeorroocorecareec.. 2
Dimensions ......... RAA AAA AAA 2
Capacities ......eoescererereorcerereere, 3
Power 2000000000000 SA ue» AA 3
"Temperature ......0.00000000000 00000 RAA 4
THEORY OF OPERATION 0.800000 0000000000 5
Protocol ......coeec.0sesrcococrorersarercaneo. 6
Keypad Controls .......... RAR AAA 7
Status Indicator LEDS ......0.0000000000000 000 8
Operating Modes ......000000000000 00H 0000 8
Manual Mode .......000000000 0000000000 8
“Timer Mode ..........eceeeocrecrecrves 9
Program Mode .......000000000000 000000 9
Calibration Zero Offset ......0.0.000000000 0000 10
: Tune Setting .........oeecrerecreno eee 11
Protocol™ Hi-limit 220240000000 00000000 12
Inert Atmosphere Theory .......000000000000 00H 12
INSTRUCTIONS ........ e... SR 13
Unpacking and Installation ......e.e.eerreeerooo 13
Set-Up .....ocesoerorecrerorrrrererereree. 14
Operating ......eererereroreorrereerrereare 18
Loading the Oven ...........rrreemerecoao 18
Pre-Startup Checklist .......reereosereeeo. 19
Startup ......oesrrcrerorerorererereaes 19
Manual Mode ...........recocrrecceoo 22
Startup .....0.00000000 000000000000 22
Run .....emoccocorcrerererreoroe. 22
Stop .......e_eereecororererere 23
Timer Mode ..... eee RAS 24
Startup ........._e_eoecrererecerees 24
Run .....orroeccccoorrerrrecane. 25
Manual Stop ...........ee.e.e.c0m.. 26
Program Mode ..........ee-re.eoverre: 27
Startup ......re_erererererocreren. 27
Run ......oroecorcooesorerereceeoo 30
Manual Stop ......e..ceerresorerre 31
Page ii |
PREFACE
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7313
Table of Contents (Cont.)
Maintenance ......ñ.mrreeorerroccrorceorereceo 32
Checklist ........”eoo eee 33
Tests .......... ee eee 34
Nitrogen Supply +. «ovina. 34
Replacement ......eoreorererercarecenee. 35
Parts ......rescrrrooocacaceorrere.. 35
Protocol” Instrument ........ñeorrreseearo 36
Heater Unit .....00000000000 000000000 37
Fan Motor ......oooooremrorconecooeo 38
APPENDIX ......ooeoccoroveorrerocorecana г... 41
Special Instructions .......... eee 41
Control Instrument ........eooocaaccocaro 41
Tune Mode +. viii янвнново 41
Tuning Outline ........eo_erreseoooo 42
Tuning Worksheet .................. 43
“Calibration Mode .......e.rerererceoo. 44
Calibration Instructions .............. 44
Diagnostics Mode ........._r_eeeeseeroo 50
Power Failure ......... oeeesesooccco. 51
Programming Examples and Outline ........... 52
Example 1 - Manual Mode ...........e.e. 52
: Example 2 - Timer Mode .........e.o.e... 53
Program Mode ........eeereererorooo. 54
Program Worksheet ...........—e—e.. 56
Example 3 - Program Mode ........... 57
Example 4 - Program Mode ........... 58
Example 5 - Program Mode ........... 59
— Troubleshooting ........ee.ererererorerecao. 60
Accessories ......ooorerrracrrororerrecaoro. 63
Warranty .......eoceroocorerrerererererean. 64
Despatch Classic™ Service Warranty Program .... 64
Immediate Service Response ...........e... 64
Field Service Network ........ _ewesecceo. 64
Best Service Protection in the Industry! ...... 65
Classic" Series Warranty ..... eee 66
— Partsand Material .........e..erecorees 66
Labor and Expenses ........eoereeeccoo. 66
Exclusions/Limitations of Liability .......... 66
Emergency Service ......000000000000000 67
Non-Compliance .......e.oeereeereooeo 67
Despatch Customer Service ......e.o_oeereseoro. 68
~ Procedures and Customer Responsibilities ....... 68
. Attachment A - Sustained Service Support ...... 69
HELP-LINE
800-473-7373
Page iii
PREFACE
Despatch IND Series Instruction Manual
C-148
List of Illustrations
Figure 1 illustrates the precision horizontal airflow. ......... 5
Figure 2 illustrates the control panel. ,...........eee....- 6
Figure 3 illustrates the CZO function in the tune mode of
Protocol *....... ee... ec... .orecerrrer... 10
Figure 4 illustrates the recommended water connection on the
Despatch IND series ovens. .....e..erreerereeoo 16
Figure 5 illustrates the cool down rate with water cooling coil
(unit withoutaload). ........... coin 17
Figure 6 illustrates the control panel. ................. 19
Figure 7 illustrates the oxygen level versus the time at maximum
SCFH purge flow. ........w.e.errevcrrercares 20
Figure 8 oxygen stabilization level versus the maintain flow of
NItrogen. .....rorercrerererererrerrarere 21
Figure 9 shows the top view of the J type thermocouple inputs on
Protocol". ......e.eeocerereresocosrorieree. 36
Figure 10 shows the top view of the J type thermocouple inputs
on Protocol *. .......reeeesrcoscorrrecrace.. 44 -
Figure 11 illustrates a sample profile. ................. 56
Figure 12 illustrates an example temperature profile. ...... 57
Figure 13 illustrates an example temperature profile. ...... 58
Figure 14 illustrates an example temperature profile. ...... 59
Figure 15 illustrates the Classic ™4 Plus 1 Service Program . . 65
*
List of Tables
Table 1 Dimensions .......”ooresesrocoorrrrccar ren. 2
Table 2 Capacities .......rerersorrreroercarereres 3.
— Table3Power ......2200000 000000 00 0 00 0000000000 3
— Table 4 Temperature ............00000000 PA 4
Table 5 Protocol" Keypad Controls ........e.e.esese.. 7
Table 6 Protocol“ Touchkeys .........e..eoeercereres 7
Table 7 Protocol” Indicator LEDs ........erreceorerro. 8
Table 8 Calibration Zero Offset Examples .............. 11
Table 9 Factory PID Settings ........e—ereescrcorero 11
Table 10 Tuning Outline ........eeereerescererero 42
Table 11 Tune Mode Parameter Calibration ............ 46
Table 12 Diagnostics Mode Outline ..........e.e.eeo. 50
Table 13 Manual Mode Example ........_e..oreesrecoo 52
Table 14 Timer Mode Example ..........errresereo 53
Table 15 Program Mode Outline ..........e.e.e..e.. 54
Table 16 Accessories ........rooorroorecorerrern. 63
Page iv
PREFACE
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Page v
PREFACE
HELP-LINE | Despatch LND Series Instruction Manual
800-473-7373 C-148
INTRODUCTION
This section provides an overview of the Despatch LIND Series
ovens. The IND Series Ovens have the most effective heat
distribution and the fastest processing time of any lab oven its size.
Air is discharged from the left side wall of the oven and circulates
through the chamber. |
Special Features
~The sturdy construction and 4 inch insulation, (5 inches in the
front) of the Despatch LND Series ovens contribute to excellent
temperature uniformity.
Despatch LND Series ovens also incorporate a modular
microprocessor based digital control. The Despatch Protocol ™
temperature controller features:
› PID tuning,
programmable up to 48 segments,
built-in manual reset Hi-limit control,
e built-in process timer,
o self-diagnostics,
e digital display,
e three (3) event outputs,
e recursive profile capability,
optional RS-422/RS-232 capability.
Other special features include the following.
«Unique Despatch design to combine higher fan volume of
forced recirculated air with a system of perforated stainless
steel walls for the ultimate in temperature uniformity.
HELP-LINE
800-473-7373
Page 1
INTRODUCTION
Despatch LND Series Instruction Manual
C-148
Special Features (Cont.)
Back welded double wall construction and fiberglass
insulation to reduce heat loss. Silicone rubber gaskets
further minimize heat leakage.
e Rapid response heater with a 5 year warranty.
e Scratch-resistant Silver-Clay® baked enamel exterior and
stainless steel interior for easy cleaning.
e Space saving, stackable design on IND 1-42 model only.
e Purge and maintain adjustable flowmeter for oxygen free
performance.
* Three-way nitrogen valve allows for easy setting from OFF
to PURGE or MAINTAIN levels.
e Water cooling coil to cool loads quickly or to operate at low
temperatures within the sealed chamber.
Specifications
Dimensions
: M E ai SE TE
um
of
LND 1-42 20 18 20 4.2 33 40 45 9
(50) | (46) | (51) (120) (84) (102) (114)
IND 2-11 | 38 20 26 11.0 54 40 62 6
(96) | (50) | (66) (310) (137) (102) (157)
LND 2-24 48 24 36 24.0 66 44 73 9
(122) | (61) | (91) (680) (168) (112) (185)
Page 2 |
INTRODUCTION
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Capacities
Table 2 Capacities =
Maximum Load
Maximum Shelf Load Lbs 30 60 100
Recirculating Fan CFM 300 1,000 1,500
HP и 1 2
Approximate Weight Net Lbs. 350 | 745 1,015
KG 159 339 461
Approximate Shipping Weight Lbs. 480 1,045 1,415
KG 218 475 643
Power
Line voltages may vary in some geographical locations. If your
line voltage is much lower than the oven voltage rating, warm up
time will be longer and motors may overload or run hot. If your
line voltage is higher than name plate rating, the motor may run
hot and draw excessive amps.
If the line voltage varies more than 10% from the oven voltage
rating, some electrical components such as relays, temperature
controls, etc. may operate erratically.
Table 3 Power
D 1-42 | 240 15.6 | 50/60 1 3
LND 2-11 | 208 298 |60 3 9
[240 |26.1 |60 3 9
1480 13.1 | 60 3 9
LND 2-24 | 208 524 |60 3 16
240 46.0 | 60 3 16
480 230 | 60 3 16
* A kit is required for 240V - 1PH - 50Hz operation. Units
will operate on a 220V - 1 PH - 50 Hz line. Units are
modified for 3 PH, 50Hz operation.
Page 3
INTRODUCTION
— HELP-LINE Despatch LND Series Instruction Manual
800-473-7373 C-148
Temperature
Table 4 Temperature
Time to Temperature 25°C - 100°C 6 5 3
(approximate minutes with 25°C - 200°C 21 14 12
no load) 25°C - 343°C 56 32 30
Recovery Time Door Open 1 Min. - 100°C <1 <1 <1
(approximate minutes with 200°C 3 2 2
no load) - 343°C 10 7 4
Temperature Uniformity at 100°С* | IC +1°C +1°C
200°C* | +2°C +2°C +2°C
343°С* +3°C +3°C +3°C
Minimum Operating with water cooling | 55°C 55°C 60°C
Temperature’ without water cooling | 97°C 100°C 110°C
(Approximate w/20°C ambient) | |
Control Stability +03°C | =03°C +0.3°C
Repeatability +0.5°C | =0.5°C +0.5°C
Cooldown Time 250 - 60°C 30 35° 45
*(approximate minutes with no load)
! Minimum operating temperature will vary with respect to
inert gas flow and temperature.
2 60°F water temperature at 120GPH
> 60°F water temperature at 210GPH
+ 60°F water temperature at 210GPH
* Figures are based on actual tests in an empty oven.
Uniformity can vary slightly depending on unit and
operating conditions.
Page 4
INTRODUCTION
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
THEORY OF OPERATION
This section details the function and operation of assemblies and
subassemblies on the Despatch LND Series Ovens. These overs —
have the most effective heat distribution system and the fastest
processing time of any lab oven its size. They are especially useful
for testing, preheating, sterilizing, drying, aging and curing as well
as other production applications. Horizontal airflow with
precision digital control delivers uniform, fast processing. The
overall result is efficient productivity under strenuous conditions.
Figure 1 illustrates the precision horizontal airflow.
The unique Despatch computerized design, moves forced
convected heat through perforated stainless steel walls. The air is
recirculated with a high volume fan. Despatch LND Series
Ovens employ higher volume fans than any competitive model.
The chamber can be densely loaded without interfering with the
process. Air delivery temperature is within ¥2°C of the number
appearing on the digital display. Nitrogen intake is regulated by
panel-mounted flowmeter and a three-way adjustable ball valve.
The water cooling rate is controlled by a flowmeter and valve -
installed when the recommended water connection is piped to
the back of the unit.
HELP-LINE
800-473-7373
Page 5
THEORY OF OPERATION
Despatch LND Series Instruction Manual
C-148
Protocol™
The ovens are equipped with a modular microprocessor based
digital temperature controller.
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Figure 2 illustrates the control panel.
The Despatch Protocol“ temperature controller is a dual
functioning controller/high limit instrument. The control portion
of Protocol ™ incorporates a microprocessor to digitally control
process variables with minimal temperature fluctuations.
The high limit portion of Protocol™ protects the product and/or |
the oven itself. If the product being processed has a critical high
temperature limit, the Hi-Limit parameter should be set to a
temperature somewhat below the temperature at which the
product could be damaged. If the product does not have a
critical high temperature limit, the Hi-Limit parameter should be
set to a value slightly higher than the highest programmed
setpoint to protect the oven equipment.
Page 6
THEORY OF OPERATIÓN
Despatch IND Series Instruction Manual | HELP-LINE
C-148 800-473-7313
Keypad Controls |
The Despatch Protocol™ temperature controller has six keys that
provide the six operating modes.
Table 5 Protocol ™ Keypad Controls
Mode Display Code | Function Description
Manual MANUAL Operation Single setpoint control
Timer TIMER Operation Single setpoint control with process timer
Program PROGRAM Operation Programmable control with three event outputs
Tune TUNE — | Configure Set instrument parameters
Calibrate | CALMODE Service Performs instrument calibration
Diagnostics | DIAGNOSE | Service Performs instrument thermocouple tests, SSR
power level and event output tests.
The Despatch Protocol™ temperature controller also has ten
(10) touch-keys so that the user can easily operate the controller.
Table 6 Protocol ™ Touchkeys
Key Description
A To move up through any mode
y To move down through any mode
+ To increase a setpoint or parameter
- To decrease a setpoint or parameter
Home To move to the beginning of any mode or segment
Reset To reset the control when an error has been corrected or to view the profile number,
segment number and the number of loops (repeat times) remaining.
Heater On “To initiate heater relay
Heater Off To disengage heater relay
Start To start an operating mode
Stop To stop an operating mode
Page 7
| THEORY OF OPERATION
HELP-LINE Despatch END Series Instruction Manual
800-473-7373 C-148
Status Indicator LEDs
Protocol™ has seven indicator LEDs that provide the following
relevant information to the user.
Table 7 Protocol™ Indicator LEDs
LED Function
Power on Lights when the power on pushbutton is pressed.
Heater relay Lights when a mode is ready for operation and the heater on key is pressed.
Soak Deviation Lights when the process temperature is not held within the user specified soak
_ deviation limits. The light turns off when the temperature is within the soak
deviation limit.
Over Temp Lights when the process temperature exceeds the high limit value. The over
temperature light remains lit until the Reset key is pressed.
Control T/C Error Lights when Protocol ™ receives a control thermocouple error.
Heater on Lights when the heater is activated by the control circuits.
Hi-Limit T/C Error | Lights when Protocol ™ receives a Hi-Limit thermocouple error.
The Despatch Protocol™ temperature controller has been
designed for ease of use while maintaining elaborate and versatile
control capabilities.
Operating Modes
Protocol“ has three primary modes of operation: the Manual
mode, the Timer mode and the Program mode.
Manual Mode
The manual mode is a single setpoint control mode that controls
the process at the user specified setpoint for an indefinite period
of time. The manual mode controls the oven temperature within
close limits as specified by the PID tuning parameters.
Whenever the instrument is powered by the Power on
pushbutton, Protocol” starts at the manual mode.
Page 8
THEORY OF OPERATION
Despatch IND Series Instruction Manual HELPLINE
C-148 | | - 800-473-7373
Timer Mode
The timer mode is a single setpoint control mode with a built-in
process timer that starts timing either at the beginning of the
process or at a user specified temperature. As in the manual
mode, the timer mode uses the PID parameters set in the tune
mode.
Program Mode
The program mode is a programmable ramp and soak control
consisting of up to eight profiles. Each profile consists of up to six
segments for a total of 48 segments (8 x 6 = 48). Any one profile
may be run recursively from two to 99 cycles or even
continuously if it is desired.
Fach segment consists of a ramp and soak period. During the
ramp period, the control will track oven temperature. For
example, a ramp is entered to heat from 100°C to 150°C in 50
minutes. Protocol™ will track the temperature 1°C every minute
for 50 minutes. During the soak period, temperature is
maintained as specified by the tuning and soak deviation
parameters.
Protocol” will not allow a soak time to begin until the actual
oven temperature is within the soak deviation limit. This process
is called assured soak. The ramp and soak periods are adjustable
from O to 99 hours, 59 minutes. Within each ramp and soak
period, up to three event outputs can be programmed either on
or off.
The event relay is used for factory installed modifications, then
disconnected before shipping. Please consult the factory for
information on connecting the event outputs. When the events
are connected, the user has the capability of controlling relays,
solenoid valves, etc., throughout the programming cycle.
Page 9
a THEORY OF OPERATION
HELPLINE Despatch LND Series Instruction Manual
800-473-7373 C-148
Calibration Zero Offset
~The Calibration Zero Offset (CZO) of Protocol ™ has been preset | 455
and tested for the specified operating conditions. Special 7 |
instructions for accessing the tune mode to change the CZO are
referred to in the Appendix of this manual.
CZO 0.0
Figure 3 illustrates the CZO function in the tune mode of Protocol™.
The CZO may be useful to make the following small temperature
corrections to the control system.
e = Correction of known sensor calibration errors.
e Correction of any known steady temperature offset between
the heated work-piece (load) and sensor. This is useful for
applications where the sensor cannot be located exactly at
the work-piece.
< Alignment of temperature indications in a multi-zone/multi-
. controller application, e.g, at ambient temperature.
Note that the CZO changes the value of the controlled
temperature when used in closed loop control. The CZO
“function can be represented by the equations:
Temp Indication (°F) = Sensor Temp (°F) - CZO% [100 (°F) - Sensor Temp (°F) ]
Temp Indication (°C) = Sensor Temp (°C) - CZO% [38 (°C) - Sensor Temp (°C)]
The CZO function is a straight line pivoted around 100°F
(38°C). Thus, the CZO functions as an offset and has the ability
to change the slope of a temperature range.
Page 10
THEORY OF OPERATION
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Calibration Zero Offset (Cont.)
Table 8 Calibration Zero Offset Examples
CZO Temperature Offset °F | Temperature
Display | measured by sensor Indication
0.0 10.0 20.0 100°F
100°F | 200°F 0° 0°
20° 100°F | 100°F 180°F
A more useful formula is one that the user can use to calibrate
Protocol™ to match the center of the chamber. This requires the
use of a temperature measuring device with its thermocouple
junction located at the center of the chamber. CZO can be
directly calculated by:
CZO
100 | Center Temp (°F) - Protocol"* Display =
Center Temp (°F) - 100 (°F)
CZO
100 Center Temp (°C) - Protocol“ Display ES)
Center Temp (*C) - 38 (°C)
Tune Setting
The Protocol "* has been preset and tested for normal operating
conditions. Special instructions for changing the tune setting are
referenced in the Appendix of this manual.
The Protocol™ on the oven can be manually tuned. For your
convenience the factory has tested and preset the PID action to
its optimum values. These values need not be changed under
normal operating conditions.
Table 9 Factory PID Settings ]
| Proportional Band Reset Time Rate Time |
| 5°C 30 seconds/repeat | O degrees/second I
Page 11
THEORY OF OPERATION
HELP-LINE | | “Despatch LND Series Instruction Manual
800-473-7373 C148
Protocol™ Hi-Limit
— Protocol” will not let the high limit value drop below the
setpoint value. In certain situations, it may be necessary to
change the setpoint first and then adjust the high limit value.
It will be necessary to reset the Hi-Limit whenever it has tripped.
The Hi-Limit may be reset by first allowing the oven chamber to
cool slightly (or increasing the parameter by several degrees) and
pushing the Reset key. During a high limit condition the Over
Temp LED will turn on thus deactivating the heater.
Inert Atmosphere Theory
The goal of the inert atmosphere oven is to reduce oxygen
concentration levels to an acceptable level. This is
accomplished by injecting an inert gas into the sealed chamber.
As the flow rate of inert gas into the chamber is increased, the
chamber becomes pressurized and gas is exhausted out the
pressure relief valve located on the back of the oven. Since
oxygen is repelled by inert gas flow, the overall oxygen
concentration in the chamber is reduced.
However, there is a limit to the desired inert gas flow rate into the
chamber. ‘To minimize the oxygen concentration level, you must
minimize the number of exhaust outlets. The only desired outlet
is through the pressure relief valve. If the inert gas flow rate is too
“high, other exhaust outlets will be formed (usually the door seal).
In this situation oxygen can penetrate back through the leak or
outlet even though the chamber is pressurized. This process is
called diffusion. As diffusion is minimized, oven performance is
maximized.
Page 12
THEORY OF OPERATION |
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
INSTRUCTIONS |
This section provides directions on unpacking, installing,
operating and maintaining the Despatch LND Series Ovens.
Unpacking and Installation
Remove all packing materials and thoroughly inspect the oven for
damage of any kind that could have occurred during shipment.
See whether the carton and plastic cover sheet inside the
carton are still in good condition.
Look at all outside surfaces and corners of the oven for
scratches and dents.
Check the oven controls and indicators for normal
movement, bent shafts, cracks, chips or missing parts such as
knobs and lenses.
Check the door and latch for smooth operation.
If there is damage, and it could have happened during shipment,
follow these instructions.
Contact the shipper immediately and file a written damage
1.
claim.
2. Contact Despatch Industries to report your findings and to
order replacement parts for those that were damaged or
missing, |
3. Send a copy of your filed damage claims to Despatch.
4, Check to make sure you have received all required
materials. Your shipment should include:
HELP-LINE
800-473-1373
Page 13
INSTRUCTIONS
Despatch LND Series Instruction
Manual
C-148
‘Unpacking and Inspection (Cont.)
e One (Il) Despatch oven,
+ One (1) Instruction manual,
* One (1) Warranty card,
e Two (2) shelves.
If any of these items are missing from the packaged contents,
“contact Despatch Industries to have the appropriate
materials forwarded to you.
5. Finally, to protect the warranty on your new oven, complete
the warranty card and mail it to Despatch within 15 days
after receipt of the equipment.
Set-up
1. Place oven on a bench top convenient location or an
optional cabinet base.
The oven must have a minimum 2 inch clearance in the
rear to provide proper ventilation. The oven may be placed
next to another cabinet, or next to another oven, with a 3
inch clearance to insure proper ventilation. Make sure oven
is level and plumb; this will assure proper heat distribution
and operation of all mechanical components.
2. Connect the nitrogen supply line (from a tank) to the inlet
located on the oven rear panel and marked nitrogen supply.
The nitrogen supply to the oven must not exceed 80 PSI.
(40 PST on LND 1-42)
3. Check for leaks in the nitrogen supply line.
a. Turn the three-way nitrogen valve switch to the OFF
position.
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C-148 800-473-7373
Set-up (Cont.)
b. Turn the PURGE flowmeter knob clockwise to the OFF
position. |
с. Turn the MAINTAIN flowmeter knob clockwise to the
OFF position. |
—d. Open tank valve on the nitrogen supply.
e. Set pressure regulator to about 40 PSI.
f Check the nitrogen plumbing for leaks with a soapy
water solution.
As nitrogen gas is odorless, all leaks should be stopped to
prevent the possibility of suffocation in a small work
area. Gas from a nitrogen leak might leak might
displace much of the oxygen in the atmosphere.
g Turn the three-way nitrogen valve switch to the
PURGE position.
h. Open the PURGE flowmeter for maximum nitrogen
flow.
i. Turn the three-way nitrogen valve switch to the OFF
position.
4. If cooling is required, install water connection for cooling
coils.
a. Pipe the coil with a three-way water supply/drain valve
on the inlet (bottom fitting) and a vacuum breaker
valve at the high point of the drain line. This will keep
water moving through the cooling coil, minimizing
steam generation.
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INSTRUCTIONS
HELP-LINE Despatch LND Series Instruction Manual
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set Up (Cont)
b. Mount the cooling water flowmeter. The How valve
can be used for adjusting the water flow or shutting off
the water flow. The water is measured by the
flowmeter.
Flowmeter Vacuum
Breaker Check
Valve
- > Drain
Cooling
Cail
poate
Flow Valve
+ - Cooling
— < Water
Supply
Figure 4 illustrates the recommended water connection on the
Despatch LND series ovens.
c. Run tubing from flow valve to flowmeter to water valve.
d. The pipe on the rear of the oven marked WATER
DRAIN should be piped to a vacuum breaker, check
valve and then to an open drain.
e. Connect a clean water supply to the flow valve marked
inlet.
Page 16
INSTRUCTIONS
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Set-up (Cont.)
f. Adjust the water flow. Cooldown times and steam
generation are dependent on cooling water flow rate.
Refer to the following chart for cooldown rates.
300 N
3 9
Е 200
Ë LND 2-24
С»
8 LND 14 proximat
100} О
LND 2-11
0 10 20 30 40 50
Time
(minutes)
Figure 5 illustrates the cool down rate with water cooling coil (unit
without a load).
5. Identify correct power source indicated on the specification
plate. |
6. On larger units, remove the control panel and the filter
panel to expose the equipment mounting area.
7. Hard wire oven directly to the electric supply. On larger
units the line connection is located on the equipment
mounting panel.
| Page 17
INSTRUCTIONS
HELP-LINE | | Despatch LND Series Instruction Manual
800-473-7373 C-148
Operating
Users and operators of this oven must comply with operating | AR
procedures and training of operating personnel as required by the | 5 <<< Cie
Occupational Safety and Health Act (OSHA) of 1970, Section 5 |. a Pe en
and relevant safety standards, and other safety rules and ce css qe
regulations of state and local governments. Refer to the relevant a (e
safety standards in OSHA and National Fire Protection Cm
Association (NFPA), Section 86 of 1990.
Loading the Oven
Despatch Industries cannot be responsible for either the process
or process temperature used, or for the quality of the product
being processed. It is the responsibility of the purchaser and
operator to see that the product undergoing processing in a
Despatch oven is adequately protected from damage.
Carefully following the instructions in this manual will help the
purchaser and operator in fulfilling that responsibility.
When loading the oven avoid spills of anything onto the heater
elements or onto the floor of the oven. Do not place the load on
the oven floor plate. This may cause the load to heat unevenly
and the weight may cause shorting out of the heater elements.
Use the shelves provided.
The two shelves are designed to be pulled out about half way
without tipping. The support capacity of the shelves is listed in
the Capacities Table in the Specifications section in this manual.
Do not overload the shelves.
Distribute the workload evenly so that airflow is not restricted.
Do not overfill your oven. The workload should not take up
more than two-thirds of any dimension of the inside cavity.
Page 18
INSTRUCTIONS
Despatch LND Series Instruction Manual | HELP-LINE
C-148 | - 800-473-7373
Pre-Startup Checklist
Know the system. Read this manual carefully. Make use of
its instructions and explanations. The know how of safe,
continuous, satisfactory, trouble-free operation depends
primarily on the degree of your understanding of the system
and of your willingness to keep all parts in proper operating
condition.
/
Check line voltage. Voltage must correspond to nameplate
requirements of motors and controls. Refer to the section
on power connections in the INTRODUCTION of this
manual.
Startup
An outline and examples for the Manual mode, Timer mode and D > not us:
Program mode are referenced in the Appendix. À completed
typical program worksheet accompanies all programmable event
outputs installed at the factory.
1. . Start the fan.
. Open the oven door.
b. Press the Power on pushbutton. You will hear the
recirculating fan start.
C. Shut the oven door.
d. Check that the green Power on LED is on.
e. Upon initial start-up on three (3) phase units, verify
proper fan rotation (direction of arrow).
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Figure 6 illustrates the control panel.
HELP-LINE
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Page 19
INSTRUCTIONS
Despatch LND Series Instruction Manual
C-148
Startup (Cont.)
2. Adjust nitrogen flow rate.
a. Determine the desired oxygen level.
b. Use the following table to determine the time to
achieve the desired oxygen level.
20
16
0,% 12
0 4 8 12 16 20 24 28 32
Time in Minutes
Figure 7 illustrates the oxygen level versus the time at maximum SCFH
purge flow
c. Turn the nitrogen valve switch to the PURGE position
for the time to achieve oxygen level as determined in
step 2b.
d. When the purge is complete, turn the nitrogen valve
switch to the MAINTAIN position.
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HELP-LINE
800-473-7373
Startup (Cont.)
e. Use the table below to determine the MAINTAIN
flowmeter value to maintain the oxygen stabilization
level.
20
16
O,% 12
0 50 100 150
Time in Minutes
Figure 8 oxygen stabilization level versus the maintain flow of nitrogen.
f Adjust the MAINTAIN flowmeter to the value
determined in step Ze.
3. Program Protocol™ for the desired operating mode. Refer
to the following instructions for the Manual mode, the
Timer mode and the Program mode.
Page 21
INSTRUCTIONS
HELP-LINE Despatch LND Series Instruction Manual
800-473-7373 | C-148
Manual Mode
Startup
The following are startup instructions for the Manual mode.
1. Select the Manual mode. Press the Power on key or the
Manual key. MANUAL will be displayed.
2. Enter the high limit temperature.
a. Press the v key. HI-LIMIT will be displayed.
b. Press the v key.
c. Use the + or - keys to enter the high limit temperature
to a value slightly higher than the intended setpoint.
3. Enter the setpoint. _
a. Press the v key. SETPOINT will be displayed.
b. Press the v key.
‘с. Use the + or - keys to enter the setpoint to the desired
operating temperature.
Run
The following are run instructions for the Manual mode.
1. Press the v key. READY will be displayed.
2. Press the Heater on key. The Heater Relay LED will
illuminate.
3. Press the Start key. The Heater on LED will
illuminate and the setpoint and actual temperature will be
displayed. As oven temperature approaches setpoint, the
Heater on LED will cycle on and off.
Page 22
INSTRUCTIONS
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Stop
The following are stop instructions for the Manual mode.
1.
4
5.
An example of the Manual mode is referenced in the Appendix.
Press the Heater off key. The Heater Relay LED will
shut off. _
Wait for oven temperature to fall below 100°C (212°F).
When the Manual mode is complete, press the Reset key
to display the final process temperatures.
Press the Stop key.
Press the Power on pushbutton to turn power off.
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Page 23
INSTRUCTIONS
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C-148
Timer Mode
Startup
The following are startup instructions for the Timer mode.
1. Select the Timer mode. Press the Timer key. TIMER will
be displayed.
2. Enter the high limit temperature.
a. Press the v key. HI-LIMIT will be displayed.
b. Press the v key.
c. Use the + or - keys to enter the high limit temperature
to a value slightly higher than the intended setpoint.
3. Enter the setpoint.
a. Press the v key. SETPOINT will be displayed.
b. Press the v key.
€. Use the + or - keys to enter the setpoint to the desired
operating temperature.
4. Enter the process time.
a. Press the v key. TIME will be displayed.
b. Use the + or - keys to enter the time of the process.
- (HHMM (hours/minutes) or MMSS (minutes/
seconds) selected in the tune mode.)
Page 24
INSTRUCTIONS
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Startup (Cont.)
5. Enter timer starting temperature.
a. Press the v key. TEMP YES/NO will be displayed.
b. Use the + or - keys to select either YES or NO.
+ Press the - key to display NO and begin timing at
ambient.
e Press the + key to display YES and begin timing at
the following input temperature.
C. Press the y key. TEMP and the begin timing
temperature will be displayed.
а. If YES was selected in step b, use the + or - keys to
enter the temperature at which the process timer begins -
timing,
I NO was selected in step b, this setpoint has no
bearing on oven operation. |
Run
The following are run instructions for the Timer mode.
1. Press the v key. READY will be displayed.
2. Press the Heater on key. The Heater Relay LED will
illuminate.
3. Press the Start key. The Heater on LED will illuminate
and the setpoint and the actual temperature will be
displayed. As the oven temperature approaches the
setpoint, the Heater on LED will cycle on and off.
Page 25
| INSTRUCTIONS
HELP-LINE Despatch LND Series Instruction Manual
800-473-7373 | | C-148
~ Manual Stop
The following are manual stop instructions for the Timer mode.
1. Press the Heater off key.
2. Wait for oven temperature to fall below 100°C (212°F).
3. When the Timer mode is complete, press the Reset key to
display the final process temperatures.
4, Press the Stop key.
5. Press the Power on pushbutton to turn power off.
“An example of the Timer mode is referenced in the Appendix of
this manual.
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INSTRUCTIONS
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HELP-LINE
800-473-7373
Program Mode
Startup
The following are startup instructions for the Program mode. In
any one segment, if the ramp and soak times are zero, Protocol ™
ignores the remaining segments of the profile. A soak period will
not begin until the actual oven temperature is within the soak
deviation limit. During any segment of a profile, if the actual
oven temperature falls outside of the soak deviation limit, the
~ Soak Deviation LED will be illuminated.
1. Select the Program mode. Press the Program key.
PROGRAM will be displayed.
2. Enter the high limit temperature.
a. Press the y key. HI-LIMIT will be displayed.
b. Press the v key. The high limit temperature will be
displayed.
c. Use the + or - keys to enter the high limit temperature
to a value higher than the intended setpoints.
3. Enter the profile number.
a. Press the v key. PROFILES will be displayed.
b. Press the v key. PRO - 1 will be displayed.
c. Use the + or - keys to enter the profile number to
program.
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All
Page 27
INSTRUCTIONS
Despatch LND Series Instruction Manual
C-148
Startup (Cont.)
4. Program the profile.
a. Press the v key. SEG - 1 will be displayed.
b. Program the ramp rate.
i. Press the v key, RAMP0001 will be displayed.
ii. Use the + or - keys to enter the ramp time.
c. Program the events desired during the ramp time.
i. Press the v key. EVENTS will be displayed.
ii. Press the v key for each event.
iii. Use the + or - keys to program the event outputs
ON or OFF for the ramp period.
d. Program the ramp ending temperature.
i. Pressthev key. TEMP and the ramp ending
temperature will be displayed.
ii. Use the + or - keys to enter the desired ramp
ending temperature.
e. Program the soak time.
i. Press the v key. SOAK and the soak time will be
displayed.
ii. Use the + or - keys to enter the soak time.
f Program the events desired during the soak time.
i. Press the v key. EVENTS will be displayed.
ii. Press the v for each event.
iii. Use the + or - keys to program the event ON or
OFF for the soak period.
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INSTRUCTIONS
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HELP-LINE
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Startup (Cont.)
g. Enter the remaining segments 2-6 by following steps a
through f. |
5. Enter the Soak-Deviation.
a. Press the v key until SOAK-DEV is displayed.
b. Press the v key. The symbol + will be displayed.
c. Use the + or - keys to enter the soak deviation limit.
6. Enter the next profile.
a. Press the y key. GOTO will be displayed.
b. Use the + or - keys to enter the profile number to
continue to.
Options include END and 1 through 8. Select End to
stop at the end of this profile. For continuous profiles
enter the same number of the profile that is currently
being programmed.
7. Enter the number of profile recursions.
a. Press the y key, REPEAT will be displayed.
b. Press the v key. TIMES will be displayed.
c. Use the + or - keys to enter the number of times to
complete the profile being programmed (1 - 99).
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INSTRUCTIONS
HELP-LINE © Despatch LND Series Instruction Manual
800-473-7373 C-148
Startup (Cont.)
8. Enter the profile end condition. The hold command is ag
contingent on the final segment of the last profile tobe run |... 25 2 7
only. '
a. Press the v key. HOLD will be displayed.
b. Use the + or - keys to select YES or NO.
Selecting YES will hold at last setpoint. The event
outputs will be held at their last value.
Selecting NO will not hold at last setpoint. The event
outputs will be turned off. |
Run
The following are run instructions for the Program mode.
1. Press the Home key until PROGRAM is displayed.
2. Press the v key until PRO - 1 is displayed.
3. Make sure the correct starting profile is entered by pressing
+ OI -.
4, Press the a key until READY is displayed.
5. Press the Heater on key. The Heater Relay LED will
illuminate.
6. Press the Start key. The Heater on LED will illuminate.
As the oven temperature approaches the setpoint, the
Heater on LED will cycle on and off. During processing,
the display shows the setpoint on the left and the actual
oven temperature on the right.
Page 30
INSTRUCTIONS
Despatch LND Series Instruction Manual HELP-LINE
C-148 | 800-473-7373
Manual Stop
The following are manual stop instructions for the Program
mode.
1. Press Heater off key.
2. Wait for oven temperature to fall below 100°C (212°F).
3. Press the Reset key to display the final process tempera-
ture. |
4. Press Stop key.
5. Press Power on pushbutton to turn power off.
Examples of the Program mode are referenced in the Appendix
of this manual.
HELP-LINE
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Page 31
INSTRUCTIONS
Despatch LND Series Instruction Manual
C-148
Maintenance
Do not attempt any service on this oven before opening the main |:
power disconnect switch. ê
Depending on the desired oxygen concentration levels and
operating temperature, certain components will eventually
become less effective. There are four crucial areas to watch for:
e door seal deterioration,
e motor shaft seal deterioration,
e sticky pressure relief valve,
e water cooling coil leak.
These areas should be inspected on a regular basis to insure
optimum performance levels. If desired, these factors can be
controlled and monitored continuously. An oxygen monitor and
pressure gauge can detect even the slightest variations in oven
performance. Contact your local Despatch representative for
more information.
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INSTRUCTIONS
Despatch LND Series Instruction Manual HELP-LINE
C-148 | | 800-473-7373
Checklist
/ Keep equipment clean. Gradual dirt accumulation retards
air flow. A dirty oven can result in unsatisfactory operation
such as unbalanced temperature in the work chamber,
reduced heating capacity, reduced production, overheated
components, etc. Keep the walls, floor and ceiling of the
oven work chamber free of dirt and dust. Floating dust or
accumulated dirt may produce unsatisfactory work results.
Keep all equipment accessible. Do not permit other
materials to be stored or piled against it.
4 Protect controls against excessive heat. This is particularly
true of controls, motors or other equipment containing
electronic components. Temperatures greater than 51.5°C
(125°F) should be avoided.
v Establish maintenance & checkup schedules. Do this
promptly and follow the schedules faithfully. Careful
operation and maintenance will be more than paid for in
continuous, safe and economical operation.
v Maintain equipment in good repair. Make repairs
immediately. Delays may be costly in added expense for
. labor and materials and in prolonged shut down.
v Practice safety. Make it a prime policy to know what you
are doing before you do it. Make CAUTION, PATIENCE,
and GOOD JUDGEMENT the safety watchwords for the
operation of your oven.
/ Lubrication, Fan motor bearings are permanently lubricated.
All door latches, hinges, door operating mechanisms,
bearing or wear surfaces should be lubricated to ensure easy .
operation.
Page 33
| | INSTRUCTIONS
HELP-LINE Despatch LND Series Instruction Manual
800-473-7373 C-148
Tests
Tests should be performed carefully and regularly. The safety of
personnel as well as the condition of equipment may depend
upon the proper operation of any one of the functions of the
Protocol™. Test the Protocol™ every 40 hours. Check that the
heater LED is cycling on and off, indicating that the heater is
working. In the manual mode, enter the HI-LIMIT to the same
value as the setpoint. Run manual mode.
When the oven temperature reaches setpoint, the Hi-limit
should shut down the system. The HI-LIMIT must be manually
reset by pushing the Reset key.
Nitrogen Supply
Turn the three-way valve on the control panel to the OFF
position and screw the adjusting knob clockwise on both PURGE
and MAINTAIN flowmeter all the way to the OFF position.
Then open the tank valve on the nitrogen supply and set the
pressure regulator to about 40 PSI. Check the nitrogen plumbing
for leaks with a soapy water solution. As nitrogen gas is odorless,
all leaks should be stopped to prevent the possibility of suffocation
in a small work areas. Gas from a nitrogen leak might displace
much of the oxygen in the atmosphere.
Page 34
INSTRUCTIONS
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Replacement
Parts
To order or return parts, contact the Service Products Division at
Despatch. The Service Products features our Response Center
for customer service. When returning parts, a Despatch
representative will provide you with an MRA (Material Return
Authorization) number. The MRA number must be attached to
the returned part for identification. When you are ordering parts,
be sure to give the model number, serial number and the part
number. This will expedite the process of obtaining a
replacement part.
When you have a service need, contact the Response Center at
1-800-473-7373: FAX 612-781-5353.
Page 35
INSTRUCTIONS
HELP-LINE Despatch LND Series Instruction Manual
800-473-1373 C-148
Protocol™ Instrument
(Tools needed: one quarter (V4) inch socket set)
1. Disconnect the power.
2. Remove the screws from the face of the control panel and
slide it forward.
3. Disconnect the thermocouple wires and the ground wire.
4. Disconnect any event output wires, noting the proper
connections. |
5. Disconnect the control panel from the oven by unplugging
the quick disconnect plug,
SENS | HIL
- + 6 — + ©
Figure 9 shows the top view of the J type thermocouple inputs on
Protocol“.
6. Connect the new control panel to the quick disconnect
plug.
7. Connect the thermocouple wires and ground wire.
8. Connect the event output wires (if applicable).
9. Replace the control panel.
Page 36
INSTRUCTIONS |
Despatch LND Series Instruction Manual
C-148
HELP-LINE
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Heater Unit
(Tools needed: Crescent wrench, screwdriver, one quarter (7)
inch socket set)
1.
Remove the floor plate.
a. Remove the screws from the floor plate.
b. Lift the floor plate out of the oven.
2. Disconnect the heater leads from heater element with a
wrench. Note which wires go on which terminals.
Unscrew the screws holding the heater frame to the oven
body.
4. Remove the heater and discard.
5. Screw down the new heater frame.
6. Attach the heater leads to appropriate terminals.
I. Replace the interior floor and screws.
HELP-LINE
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Page 37
INSTRUCTIONS
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C-148
Fan Motor
(Tools needed: Screwdriver, 5/32 inch Allen wrench, one
quarter (74) inch socket set)
1. Remove the floor plate.
a. Remove the screws from the floor plate.
b. Lift the floor plate out of the oven.
2. Remove the left side wall.
3. Remove the fan inlet plate.
4. Loosen the set screws (2) on fan wheel in middle of oven
bottom. You can reach the fan wheel by going through the
heater or by disconnecting and removing the heater. Refer
to the Heater Unit instructions.
5. Place the oven on its back.
6. Remove the bottom plate. This will reveal the fan motor.
7. Remove the fan motor.
a. Unscrew the screws (4) holding motor mounts to the
body.
b. Disconnect the motor leads from the terminal strip on
the power panel.
c. Lift the fan motor from the oven body.
After the fan wheel has run at temperature for awhile, it will
stick to the shaft. Some force may be required to separate
the fan wheel from the fan motor shaft.
8. Take the motor mounts off old motor.
9. Put the motor mounts onto new motor.
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INSTRUCTIONS
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HELP-LINE
800-473-7373
Fan Motor (Cont.)
10.
11.
12.
13.
14.
15.
16.
Replace the fan motor.
a. Insert the shaft into shaft collar. Put the fan wheel onto
shaft from inside oven.
b. Reattach the motor mounts to the oven body, making
sure grommets are in place.
c. Reattach the motor lead wires to the terminal strip.
Replace the oven bottom.
Turn the oven right side up.
Adjust the fan wheel for 3/16 inch clearance between the
wheel and the inlet ring.
Tighten the set screws on the fan wheel.
Check that the set screws hit the flats machined into the
motor shaft.
Replace the floor plate.
HELP-LINE
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Page 39
INSTRUCTIONS
Despatch LND Series Instruction Manual
C-148
Page 40
APPENDIX
Despatch LND Series Instruction Manual HELPLINE
C-148 | 800-473-7373
APPENDIX
Special Instructions
The Protocol ™ has been preset and tested at the factory for
normal operating conditions. In most applications, it will not be
necessary to alter oven settings. This section contains additional
information and reference for special operating conditions.
Control Instrument
Tune Mode
Various functions of the control instrument are set by parameters
in the tune mode. To access the tune mode, it is necessary to |
enter the proper code.
1. Press Tune key. The display reads TUNE.
2. Press y key. CODE *** will be displayed.
*
3. Enter + - - + - +. PID TUNE will be displayed.
The PID tuning parameters may be entered. The units are listed
below.
Р =degrees —
| = seconds/repeat
D = degrees/second
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Despatch LND Series Instruction Manual
Tuning Outline
Tabl
Selects tune mode.
CODE *** Enter + - - + - +
PID TUNE Enter tuning parameters.
Pl Proportional band in degrees (+ or - keys).
Ll Reset in seconds/repeat (+ or - keys). —
D-1 Rate in degrees/second (+ or - keys). |
DEG- Select °C or °F (+ or - keys).
SPL - ‘Setpoint limit, set to maximum temperature of oven (+ or [| keys).
CZO - Calibration zero offset -99.9 to 99.9 (+ or - keys).
DIS Time set in MMSS (minutes/seconds) or HHMM (hours/minutes).
BEEP Select beep on or off (+ or - keys).
PE-RECVR Power failure recovery mode. Use + or - keys to select from STOR RESUME or HOLD.
; STOP Program terminates. Must restart from the beginning of the program.
RESUME When power is restored, program resumes at the point where power failure occurred.
| HOLD Program waits for the operator. The operator has a choice of terminating or resuming the
program. | | |
DIG COMM Digital communications option. Disregard unless Protocol ™ is supplied with optional digital communica-
tions interface. For proper setting, refer to the Protocol“ software manual or the Digital Communication
User Guide. Select from NO COMM, CPIF or ASCII (+ or - keys). Select from RS232C or RS422A
(+ or - keys). Select address (ADDR) from 1 to 999 (+ or - keys).
RECONFIG For saving changes to DIG COMM options in memory.
PROF CLR Entering code clears all profiles to default values.
VARS CLR Entering code clears the SRAM in Protocol™. All parameters must be reset. Should be done in
| EXTREME circumstances only. Recalibration is essential.
CODE *E* For factory installed modifications. Do not change the code setting.
Experience and experimentation with tuning parameters will
guide the user in determining the proper settings when normal
conditions are not present.
Page 42
APPENDIX
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Tuning Worksheet
In most applications it is not necessary to alter tuning parameters.
To enter the tune mode, press Tune. TUNE will be displayed.
Press y and enter + - - + - +. Using the v key and the + or -
keys, enter the desired settings. Press the Home key when
finished.
Display Setting _ Factory Setting — Units
P-1 — 5 degrees
Ll _— 30 seconds/repeat
D-1 LL 0 degrees/second
DEG- 4 C °F (°C)
SPL- oo 343 °F (°C)
co- __—_ varies % degrees - calibrated to
| center chamber at
300°C
DIS- 4 HHMM minutes/seconds
| (hours/minutes)
BEEP _ —— On off (on)
Notes:
1. The alternate is listed in ().
*
2. See Table 10, Tuning Outline, for further information
regarding display codes.
3. Tuning parameters may change from those set at the
factory. Load mass, fresh air and exhaust damper settings
will affect tuning parameters. Some experimentation is
required to determine optimum settings.
Reset times greater than 35 seconds/repeat are not
recommended.
HELP-LINE
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Page 43
APPENDIX
Despatch LND Series Instruction Manual
C-148
Calibration Mode
Protocol™ has been tested and calibrated at the factory. Under
normal operating conditions recalibration should not be
necessary. However, if the instrument does not comply with
known standards recalibration may be necessary.
Calibration Instructions
We recommend using a certified analog thermocouple
simulator/calibration source with less than +1*F noise. We have
experienced signal stability problems with some micro-processor
based thermocouple simulator/calibrators which induce an error
during the calibration procedure. This error generally results in a
non-linear shift in the controller's indicated temperature.
1. Disconnect AC power to the oven.
2. Remove Protocol™ controller to expose thermocouple
input terminals.
3. Disconnect control and Hi-Limit thermocouples from
controller thermocouple input terminals (Control T/C, and - -
Hi-Limit T/C).
SENS HIL
DOOM
- + SG - + 6
Figure 10 shows the top view of the J type thermocouple inputs on
Protocol".
4. Mark thermocouple leads if not labeled.
5. Connect a 6 foot piece of type J thermocouple lead wire to
each of the Control T/C and Hi-Limit T/C terminals.
Page 44
APPENDIX
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Calibration Instructions (Cont.)
6. Twist together or jumper the lead wire end not connected
to the Control T/C and Hi-Limit T/C terminals. This
creates a junction and prevents a control sensor error [S-
T/C ERR] and Hi-Limit sensor error [H-T/C ERR]
caused by an open thermocouple.
7. Loosely fasten the Protocol™ controller to the oven.
8. Re-connect AC power to the oven.
9. Press the Power on pushbutton to energize oven.
10. Press the Tune key. The display reads [TUNE |].
11. Use the y and a keys to scroll through the tune mode
configuration. The controller must be configured to operate
in °F (Fahrenheit) and CZO should be set to zero (0.0).
a. Record initial tune mode parameters prior to making any
changes.
b. Press the v key. The display reads [CODE ***],
c. Press the following key sequence: +, -, =, +, -, +.
The display reads [PID TUNE]. Protocol” is in the
tune mode.
Page 45
| APPENDIX
HELP-LINE | | Despatch LND Series Instruction Manual
800-473-7373 | | C-148
Calibration Instructions (Cont.)
d. Use the following table to change the tune mode
parameters.
vkey [P-1 ### 5 = + or - keys 0°C to 500°C
32°F to 932°F
vkey |I-1 ### 30 + or - keys 0 to 999 seconds/repeat
vkey |D-1 ### 0 — j¡+or- keys 0 to 999 degrees/second
v key ¡DEG - С C + key for C or - key for E
v key [SPL ### |maximum + or - keys 0°C to 500°C
designed operating 32°F to 932°F
temperature!
v key |CZO##.# can vary + or - keys to change -99.9 to 99,9 degrees
parameter to 0.0
vkey IDIS HHMM + key for HHMM (hours
HHMM and minutes) or the - key
for MMSS (minutes and
| seconds).
y key [BEEP ON ON + key for ON or the - key
? | for O $
1... 204*C/400% 260°С/500°Е 343°С/650°Е
e. Press the Manual key. The display reads
[MANUAL 1.
f. Allow the controller a thirty (30) minute warm up time
before proceeding to the step %13 - CAL MODE.
12. Press the Cal key. The display reads [CAL--MODE].
13. Press the v key. The display reads [CODE ***].
Page 46
APPENDIX | |
Despatch IND Series Instruction Manual HELP-LINE
C-148 | 800-473-7373
Calibration Instructions (Cont.)
14. Press the following key sequence: +, -, -, +, -, +.
The display reads [HCAL ###].
15. To calibrate the control, press the v key. The display reads
[SCAL ###].
a.
Connect the piece of type ] thermocouple lead wire to
the Control T/C terminals, to a thermocouple simulator.
. Set the simulator to output a type ] thermocouple signal.
Twist together or jumper the piece of type
thermocouple lead wire, wired to the Hi-Limit T/C
terminals. This creates a junction and prevents a Hi-
Limit sensor error [H-T/C ERR] caused by an open
‘thermocouple. Press the Reset key to clear a Hi-Limit
sensor error [H-T/C ERR] caused by an open
thermocouple.
. Adjust the simulator to supply a 250°F signal.
Press and hold the - key for approximately three (3)
seconds until display indicates 250. If display indicates
932, continue to step f. However, you should verify that
the display indicates 250 on step h.
Adjust the simulator to supply a 450°F signal.
Press and hold the + key for approximately three (3)
seconds until display indicates 450.
. Repeat steps d through g
HELP-LINE
800-473-7373
Page 47
APPENDIX
Despatch [ND Series Instruction Manual
C-148
Calibration Instructions (Cont.)
16. To calibrate the Hi-Limit control, press the a key. The
display reads [HCAL ~~ ###].
a. Connect the piece of type ] thermocouple lead wire,
wired to the Hi-Limit T/C terminals, to a thermocouple
simulator.
b. The simulator should be set to output a type J
thermocouple signal.
c. Twist together or jumper the piece of type
thermocouple lead wire to the Control T/C terminals.
- This creates a junction and prevents a control sensor
error [S-T/C ERR] caused by an open thermocouple.
Press the Reset key to clear a control sensor error [S-
T/C ERR] caused by an open thermocouple.
d. Adjust the simulator to supply a 250°F signal.
e. Press and hold the - key for approximately three (3)
seconds until display indicates 250. If display indicates
932, continue to step f. However, you should verify that
the display indicates 250 on step h.
f Adjust the simulator to supply a 450°F signal.
g Press and hold the + key for approximately three (3)
seconds until display indicates 450.
h. Repeat steps d through g.
i. Press the Manual key. The display reads
[MANUAL].
17. Press the Power on pushbutton to de-energize oven.
18. Disconnect AC power to the oven.
19. Remove Protocol™ controller to expose thermocouple
inputs terminals.
Page 48
~ APPENDIX |
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Calibration Instructions (Cont.)
20. Disconnect the two pieces of type ] thermocouple lead wire
21.
22.
23.
24.
25.
26.
27.
connected to the Control T/C and Hi-limit T/C terminals.
Re-connect control and Hi-Limit thermocouples to the
* controller thermocouple terminals (Control T/C, and
Hi-limit T/C).
Re-install the Protocol ™ controller onto the oven.
Re-connect AC power to the oven.
Press the Power on pushbutton to energize oven.
Press the Tune key. The display reads [TUNE |.
Reset any tune mode parameters that were changed in step
U y perform calibration (examples: DEG = F and CZ0 =
When changes have been completed, press the Manual
key. The display reads [MANUAL |].
The calibration procedure is complete.
HELP-LINE
800-473-7313
Page 49
APPENDIX
Despatch LND Series Instruction Manual
C-148
Diagnostics Mode
The diagnostics mode is provided to give certain relative
information about Protocol™. The following gives an outline of —
the diagnostics mode.
Table 12 2 Diagnostics Mode Outline
DIAGNOSE Select Diagnostics mode.
SSR Protocol™ SSR output level
EVENTS Events 1-3 follow
E-1 Event 1 output
E-2 Event 2 output
E-3 Event 3 output
SENS-T/C | Control thermocouple display follows
GOOD Control thermocouple test and input reading
HL - T/C Hi-Limit thermocouple display follows
GOOD Hi-Limit thermocouple test and input reading
PWR % output
SEN AD conversion code for control thermocouple
HIL AD conversion code for Hi-Limit thermocouple
Items that can be adjusted by the user include SSR (ON or
OFF), Events E-1, E-2 and E-3(ON or OFF) and PWR. The
SSR and PWR items can be used to test the solid state relay for
proper operation. The SSR item allows the SSR to output 100%
(ON) or 0% (OFF). The PWR item allows for adjustable output
from 0%.to 100%. To implement, adjust the PWR level with the
+/- keys and turn on the heater relay.
Page 50
APPENDIX
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Power Failure
In the event that the power supplied to Protocol ™ is insufficient
at any point during a running mode, the display will read PWR-
FAIL. In the tune mode the user can choose the Power Fail
Recovery mode from Stop, Resume and Hold. To restart after a
power failure in the hold mode, press the Start key to resume
oven operation. Otherwise, press the Reset key to clear the
PWR-FAIL display. Do not shut off the power during a running
mode. This creates an error condition and PWR-FAIL will be
displayed the next time Protocol“ is powered up. Instead, press
the Stop key and the Heater Off key. This will power off
Protocol * without creating an error condition.
HELP-LINE
800-473-1313
Page 51
APPENDIX
Despatch LND Series Instruction Manual
C-148
Programming Examples and Outline
The following examples show a step by step procedure for
‘programming Protocol™ in the Manual, Timer and Program
modes. Example 1 covers the Manual mode and example 2
covers the Timer mode. A detailed outline covers the Program
mode with a programming worksheet and examples 3-5 following
the outline.
Example 1 - Manual Mode
Control the process at 250°E
Select Manual mode
Enter the high limit temperature
High limit temperature currently set at 200°F
+ HL 275 Increase high limit temperature to-275°F
y SETPOINT Enter the setpoint
v 180 75 Setpoint at 180% actual oven temperature at 75°F
+ 250 75 Increase setpoint to 250°F
v READY Protocol m is ready to run Manual mode
Heater On | READY Heater relay initiated, heater ready for power
Start 250 75 Setpoint = 250°F actual oven temperature = 75°F
Stop READY Stop Manual mode
Heater Off | READY Heater relay LED is off, heater secured off
Page 52
APPENDIX
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Example 2 - Timer Mode
Control the process at 200°C for three hours and 15 minutes
with the timer beginning at 195°C. Protocol™ will stop
automatically when run in Timer mode.
Select timer mode
Enter the high limit temperature
Hi-Limit currently set at 225°C
- HL 215 Decrease high limit to 215°C
y SETPOINT Enter the setpoint
y 210 25 Setpoint at 210°C, actual oven temperature at 25°C
- 200 25 Decrease setpoint to 200°C
v TIME0010 Timer currently set for ten minutes
+ TIMEO315 Increase timer to three hours and 15 minutes
y TEMP NO Timer currently set to begin timing at ambient
+ TEMP YES Timer set to begin timing at the following temperature
y TEMP 79 Timer currently set to begin timing at 79°C
+ TEMP 195 Timer set to begin timing at 195°C
v READY Protocol” is ready to run Timer mode
Heater On |READY — Heater relay LED on, heater ready for power
Start 200 25 Setpoint = 200°C, actual oven temperature = 25°C
Stop READY Stop Timer mode
Heater Off | READY Heater relay LED is off, heater secured oft
Page 53
APPENDIX
HELPLINE Despatch LND Series Instruction Manual
800-473-7373 C-148
Program Mode
Hi-Limit Hi-Limit for Program mode
HL Enter high limit temperature (+ or - keys).
PROFILES Enter profile number (1-8).
PRO-
SEG- Segment number of profile ( 1-6)
RAMP Ramp time entered
EVENTS Event status for ramp time
E-1 Event 1 status (ON or OFF
E-2 Event 2 status (ON or O
E-3 Event 3 status (ON or O
TEMP Ramp ending temperature
- SOAK Soak period of ramp ending temperature
EVENTS Event status for soak period
E-1 Event 1 status (ON or O
E-2 Event 2 status (ON or O
E-3 Event 3 status (ON or O
SOAK-DEV Soak-Deviation limit for profile (Also assured soak limit)
+/- Enter soak-deviation limit.
GOTO Enter profile to GOTO |
End = Move to REPEAT TIMES command
1 = GOTO profile 1
2 = GOTO profile 2
8 = GOTO profile 8
REPEAT Enter number of recursions (1-99)
TIMES 1 = Execute profile 1 times
2 = Execute profile 2 times
99 = Execute profile 99 times
HOLD Hold at last setpoint?
YES Hold at last setpoint indefinitely.
Holds event outputs at last value.
NO No hold at last setpoint.
Event outputs turn OFF:
Page 54
APPENDIX
Despatch IND Series Instruction Manual ; HELP-LINE
C-148 800-473-7373
Program Mode (Cont.)
Notes on the Program mode.
The profile number is manually entered using the + or -
keys.
Six segments exist for each profile.
If the ramp time and soak time for any one segment is zero,
Protocol™ ignores the remaining segments.
The REPEAT TIMES command is the number of times to
execute the profile being programmed.
The HOLD command is contingent on the final segment of
the last profile to be run only.
A soak time will not begin until the actual temperature is
within the soak-deviation limit. (Assured soak limit).
Make sure the proper starting profile number is displayed in
the PRO- prompt before executing the profile to be run.
While a program is being executed, pressing the Reset key will
display the profile number, segment number and the number of
loops (REPEAT TIMES) remaining. Pressing the Start key will
display the appropriate ramp or soak time remaining (TR.)
IF Protocol” is in a HOLD condition, pressing the Reset key
will display that the control is in segment 7 (HOLD.
HELPLINE
800-473-7373
Page 55
APPENDIX
Despatch LND Series Instruction Manual
C-148
Program Worksheet
The program worksheet serves as a guide to the input parameters
for the program mode.
О
© -
2
с
E.
5
0 1 2 3 4 5 6
Time (minutes)
Figure 11 illustrates a sample profile.
Display Setting(s)
HL
PRO-
SEG- 1 2 3 4 5 6
RAMP
E-1
E-2
E-3
TEMP
SOAK
E-1
E-2
E-3
SOAK-DEV
GOTO
REPEAT TIMES
HOLD |
Page 56
APPENDIX
Despátch LND Series Instruction Manual — HELP-LINE
C-148 800-473-7373
Example 3 - Program Mode
130 -
120 1-
110]
100-
90 -
“Temperature (°С)
80.
Hold
109 20
30 40
Time (minutes)
Figure 12 illustrates an example temperature profile.
Follow the characteristic curve listed below.
Display Setting(s)
HL 150
PRO- 1
SEG- ИВ 2 3 4
‘RAMP 0020 0010 0010 0000
E-1
E-2
E-3
TEMP 100 130 120 120
SOAK 0010 0010 0001 0000
E-1
E-2
E-3
SOAK-DEV 1
GOTO End
REPEAT TIMES 1
HOLD Yes
HELP-LINE
800-473-7313
60
Page 57
APPENDIX
Despatch LND Series Instruction Manual
C-148
Example 4 - Program Mode
Autostart the oven after two hours and follow the characteristic
curve below.
Cool ‘time to cool oven to
below 212 °F before shutdown
Do
©
oO
250 ; \
Temperature (F)
о
о Wun
S O
Nn
©
0
01 2 3 4 5 6 7 8 9 10 11
Time (minutes)
Figure 13 illustrates an example temperature profile.
Display Serting(s)
HL 240
PRO- 1
SEG. 1 2 3 4 5 6
RAMP 0001 0100 0030 Ol00 0100 0030
E-1 OFF ON ON ON ON ON
E2
E-3
TEMP 70 130 160 130 220 10
SOAK 0200 0030 0100 0100 0200 0000
E-1 OFF ON ON ON ON OFF
E-2
E-3
SOAK-DEV 5
GOTO End
REPEATTIMES 1
HOLD NO_
Page 58
APPENDIX
Despatch LND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Example 5 - Program Mode
Complete characteristic curve five times.
100 -
90 -
80-
10-
60 -
Temperature (°C)
03 > 3 4
Time (hours)
Figure 14 illustrates an example temperature profile.
Display Setting (s)
HL | 115
PRO- 1 |
SEG- 1 2 3 4 5 6
RAMP — 0100 0200 0000
El | |
E-2
E-3
TEMP 100 90 50
SOAK 0100 0001 0000
E-1
E-2
E-3
SOAK-DEV 10
GOTO End
REPEAT TIMES 5
HOLD NO
Page 59
| APPENDIX
HELP-LINE Despatch LND Series Instruction Manual
800-473-7373 | | C-148
Troubleshooting
Equipment which operates for long periods of time may develop
problems. Below are possible problems and suggested solutions.
If you have a problem not listed and do not know what to do,
contact Despatch Industries at our toll free Help Line
800-473-7373.
Difficulty Probable Cause Suggested Remedy
Failure to heat No power Check power source and/or oven and wall fuses.
~ Broken or frayed cord Replace with new cord.
Burned out heater Replace heater (see warranty.)
Protocol ™ malfunction Replace controller.
Loose wire connections Disconnect power and check connections behind
control panel.
Slow heat up Improperly loaded Reduce load or redistribute load in chamber.
Low line voltage Supply sufficient power and proper connections.
Check for circuit overload.
Heating element(s) are Replace burned out element (see warranty
burned out statement.)-
240 volt oven is connected Raise line voltage to a 240 volt line.
to a 208V line
Fan motor failure Replace fan motor.
Frequent heater =~ Harmful fumes generated by Increase vent opening or discontinue process.
element out load
Spillage or splattering of Disconnect power and clean oven chamber
material on heater elements and elements.
Overheating oven Check the Hi-Limit.
Page 60
APPENDIX
Despatch LND Series Instruction Manual HELP-LINE
C-148 800-473-7373
Troubleshooting (Cont.)
Difficulty
Erratic temp.
Inaccurate temp.
Probable Cause
Protocol™ malfunction
Improper tuning parameters
Protocol™ miscalibration
Hi-Limit setting
Improper offset
Excess surface Door seal
or door temp. deterioration
Improper airflow Fan motor failure
Unbalanced fan wheel
Excessive Dirty fan wheel
vibration |
Unbalanced fan wheel
Oven will not Hi-Limit set too low
control at setpoint
Protocol ™ malfunction
SSR malfunction
Air friction of recirculation fan
Heater does not
shutdown until
temp. reaches the
Hi-Limit setting
Protocol™ malfunction
SSR malfunction
HELP-LINE
800-473-7373
Suggested Remedy
Replace Protocol ™.
Check tuning parameters.
Recalibrate Protocol™ (see section on Calibration
mode.)
Hi-Limit should be 10-25°C higher than setpoint.
Check calibration zero offset.
Replace door seal.
Replace fan motor.
Replace fan wheel.
Clean fan.
Replace fan wheel.
Set the Hi-Limit higher.
Replace control.
Replace SSR and/or check control output voltage.
Open exhaust air vent. Unit will not control below
minimum operating temperature with vent closed.
Replace Protocol”.
Replace SSR.
Page 61
APPENDIX
Despatch LND Series Instruction Manual
C-148
Troubleshooting (Cont.)
Difficulty Probable Cause Suggested Remedy _
Excessive O, Door seal deterioration Replace door seal
levels
Pressure relief valve sticking — Replace pressure relief valve.
Motor shaft seal deterioration Replace motor shaft seal
Water cooling coil leak Replace coil or repair leak
Purge and maintain flow Adjust rates and/or read inert atmosphere theory *
rates ineffective.
Purge and maintain times See start-up graphs or add O, monitor for automatic
ineffective control.
Page 62
APPENDIX
Despatch IND Series Instruction Manual HELP-LINE
C-148 | 800-473-7373
Accessories
The ovens have options that can easily be field installed.
Table 16 Accessories
The round chart recorder follows the temperature changes and records them for
permanent record.
Auto Cooling | Includes solenoid valve and the necessary components and instructions to automati-
Kit ‘ cally control the water cooling flow rate.
Auto Nitrogen Includes the necessary components and instructions required to automatically control
Kit the PURGE and MAINTAIN flow rates.
Door switch Disables heater when the door is opened.
Extra shelves |
Stands This support frame includes one open shelf.
Base cabinets
These steel, 22 inch high cabinets are painted to match the ovens. The cabinets store
supplies and hold workloads. A magnetic latch secures the door. Standard Despatch
shelves fit in the cabinets. Shelves for base cabinets must be ordered separately.
‘Stacking kit
Allows ovens to be stacked to save space. Kit includes angles mounted on top of the
lower oven to stabilize the upper oven. (LND 1-42 only)
The above items can all be field installed. For further information
on these items or other available options, please contact your
Despatch representative.
HELP-LINE
800-473-7373
Page 63
APPENDIX
Despatch LND Series Instruction Manual
C-148
‘Warranty
For years Despatch has delivered an exceptional product backed
by a strong sense of responsibility and drive for long term
customer satisfaction. These business principles enable us to offer
the exclusive and comprehensive "Classic™ Four Plus One
Service Warranty Program”.
Despatch Classic™ Service Warranty Program
The basis of this outstanding, exclusive service program is a four-
year replacement warranty covering defects in workmanship or
material on all Despatch manufactured components and
assemblies. Add to this a comprehensive 1 year parts warranty on
the entire unit and you have one of the strongest warranties in —
the industry.
Immediate Service Response
The key to the Classic™ Service Program is response. A toll free
Help-Line connects you to our Customer Service response center
giving you immediate access to specialized assistance. Our
customer service Product Service Technicians have over 200
years experience and access to detail design and manufacturing
documentation specific to your Despatch unit. This exacting
level of service is a benefit only Despatch can provide and means
that you can expect speedy, accurate and the most cost effective
response.
Field Service Network
A growing network of Service Professionals are available to
support your Despatch equipment. From routine calibration and
preventive maintenance to emergency breakdown response, our
service network is positioned to reach 90 percent of our installed
base within four hours. This is service you can depend on.
Page 64
APPENDIX |
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Best Service Protection in the Industry!
Classic™ 4 + 1 Service Program
Year 1 Year 2 Year 3 Year 4 Year 5 Year 6
4 Four Year (parts replacement) Warranty 5th
YEAR
+ ЖЖ
1 One Year
+
Upgrades
+
Stand Alone
Service
Agreements
= Years 1 through 4 Years 5 and Beyond
Figure 15 illustrates the Classic ™4 Plus 1 Service Program
** Receive Sth year parts replacement warranty free with
purchase of PM+ or Total Service Agreement within
the first two years.
Page 65
| APPENDIX
HELP-LINE | Despatch LND Series Instruction Manual
800-473-7373 C-148
Classic™ Series Warranty
Parts and Material
Despatch warrants all parts and assemblies manufactured by
Despatch for the Classic™ Series oven to be free from defects in
material and workmanship for a period of four (4) years from the
date of shipment or start-up, by Authorized Despatch Service
Representative, whichever is later.
Despatch further warrants all parts and assemblies to be free from
defects in material and workmanship for a period of one (1) year
from date of shipment or start-up, by Authorized Despatch
Service Representative, whichever is later.
Despatch will repair or replace, at our option, f.o.b. Despatch's
factory, parts covered by this warranty. Despatch is not
responsible for parts defects resulting from misuse, abuse, acts of
nature or utility performance not to Despatch specification
including electrical, environmental and fresh air/exhaust
provisions.
Labor and Expenses
Despatch Classic™ Series warranty cover parts replacement or
repair. Labor and other expenses related to the removal and
replacement of such parts are the owners responsibility as is any
‘necessary reprogramming, calibration and certification.
Exclusions/Limitations of Liability
The foregoing warranty shall be deemed valid and binding upon
Seller if and only if Purchaser loads, operates and maintains the
equipment supplied hereunder in accordance with the instruction
manual provided upon delivery of the equipment. Seller does not
guarantee the process of manufacture by Purchaser or the quality
of product to be produced by subject equipment. This warranty
does not cover expenses to diagnose, repair or replace
components or associated failures.
Page 66
APPENDIX
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Exclusions/Limitations of Liability (Cont.)
Parts failures caused by improper operation, abuse, misuse, acts of
nature, and nonconforming utilities and environments are not
covered by this warranty.
Despatch shall not in any event be liable for indirect, special,
consequential or liquidated damages or penalties, including loss of
revenue, profits or business opportunities resulting from
interruption of product production. Despatch shall further be
held blameless for any damages or expenses resulting from delays
in our attempts to diagnose and repair the equipment,
unavailability of spare parts or inaccessibility of the equipment.
Specifically excluded from this warranty is responsibility for
internal and external corrosion damage to the equipment.
Emergency Service
In an emergency situation, Customer agrees to:
1. Immediately shut off fuel or energy supply (gas and
electricity).
2. Call 911 for emergency assistance if needed.
3. Call Despatch Service Help-Line at 800-473-7373.
*
Non-Compliance
Despatch reserves the right to suspend and withhold service as
provided under this Warranty in the event of non-compliance by
the Customer to any terms and conditions of this Warranty.
Further, Despatch is held harmless for any loss of production,
incurred expenses, or other inconveniences due to suspension of
service under this non-compliance provision.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL
OTHER EXPRESS AND IMPLIED WARRANTIES WHATSOEVER, AND
SPECIFICALLY THERE ARE NO IMPLIED WARRANTIES OF |
MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.
SEE ATTACHED DESCRIPTION OF DESPATCH CUSTOMER SERVICE
PROCEDURES AND RELATED CUSTOMER RESPONSIBILITIES WHICH
ARE INTEGRAL TO THIS WARRANTY.
“THE FOREGOING WARRANTY IS NOT TRANSFERRABLE IN
SITUATIONS WHERE EQUIPMENT OWNERSHIP IS TRANSFERRED TO
ANOTHER PARTY.
HELP-LINE
800-473-1373
Page 67
APPENDIX
Despatch LND Series Instruction Manual
C-148
Despatch Customer Service
Procedures and Customer Responsibilities
To provide the most effective service to our customers under this
warranty, all requests for repairs are to be initiated by the
Customer by telephone to the Despatch Service Help Line, 800-
473-7373. The Standard Period of Maintenance (SPM) is defined
as 8 a.m. to 5 p.m. local time, excluding weekends and Despatch
Holidays. Calls placed within the SPM will be handled as follows.
Help Line calls connect the customer with the Despatch
Response Center. The Response Center will record all pertinent
information, including SERIAL and MODEL NUMBER of the
unit(s), the urgency and nature of the problem, and the name and
phone number of the caller or other contact. This information
will be passed to the first available service support technician who
will research the units serial file so as to be familiar with customer
unit when he calls the customer back. Despatch service
technicians will make every effort to call back within four (4)
working hours, or less, from receipt of the initial call. Despatch
will advise the Customer on suggested steps and/or tests to either
resolve the problem or help to confirm the diagnosis of the
problem.
Customer Agrees to cooperate in performing such tests and
attempting to resolve the problem as quickly as possible.
Customer also agrees to replace minor parts such as fuses, latches,
etc. as instructed by Despatch Service Technicians. This |
approach has Despatch and the Customer cooperating to effect
the most expedient and cost effective repair and minimize down
time. Ifin Despatch's sole judgement, the equipment cannot be
repaired in this manner, an on-site visit by a Despatch authorized
service representative may be scheduled to repair the equipment.
Customer agrees that, when requested and authorized, such
charges will be paid by the Customer within 30 days from receipt
of invoice.
Page 68
APPENDIX
Despatch IND Series Instruction Manual
C-148
HELP-LINE
800-473-7373
Attachment A - Sustained Service Support
At Despatch long term customer satisfaction means more than
responding quickly and effectively to our customers’ service
requirements. It means offering comprehensive customer support
well beyond the scope of our initial contractual commitment.
Despatch's Service Products Division offers a Total Service
Agreement package or a Preventive Maintenance Plus agreement
(PM+). These service products are unique in the industry and
offer the following benefits to our customer:
Priority response for minimum production interruption.
e Preventive maintenance for longer product life.
e Discount on parts and services where applicable.
e Single payment for reduced billing expense.
e Elimination of need for a separate purchase order for each
service requested.
Because these extra service options are aimed at extending our
new equipment productivity, we will also extend the Despatch
four year manufactured parts warranty for another 12 months.
This bonus warranty is automatically yours when you purchase a
service agreement from Despatch within the first 12 months after
shipment of the equipment.
Page 69
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HELP-LINE | Despatch LND Series Instruction Manual
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