Cole Parmer 700 Series User manual

Standard and Premium Ovens
Operation Manual
and
Parts List
LT2148X5 • 2/15/10

Introduction ........................................................................................................................................................ 3
Installation ..........................................................................................................................................................4
Selecting a Location ....................................................................................................................................4
Unpacking ....................................................................................................................................................4
Preparing the Oven ......................................................................................................................................5
Power Switch ................................................................................................................................................5
Controls ..............................................................................................................................................................6
Display ..........................................................................................................................................................6
Keypad..........................................................................................................................................................7
Operation ............................................................................................................................................................8
Safety Precautions........................................................................................................................................8
Limit Alarms ..................................................................................................................................................9
Display Offsets..............................................................................................................................................9
Service ..............................................................................................................................................................11
Replacing the Door asket ........................................................................................................................11
Accessing the Electronics Compartment....................................................................................................12
Replacing the Heater..................................................................................................................................13
Replacing the Cooling Fan ........................................................................................................................14
Replacing the Circulating Fan Motor ..........................................................................................................14
Replacing the Controller ............................................................................................................................15
Replacing the Solid State Relay ................................................................................................................16
Replacing the Safety Relay ........................................................................................................................16
Replacing the Control Thermocouple ........................................................................................................17
Replacing the Door Hinges ........................................................................................................................18
Replacing the Door Handle ........................................................................................................................18
Adjusting the Door Cam ............................................................................................................................18
Troubleshooting ................................................................................................................................................20
Replacement Parts............................................................................................................................................21
Performance Characteristics ............................................................................................................................22
Specifications ....................................................................................................................................................23
Electrical Requirements..............................................................................................................................23
Power Requirements ..................................................................................................................................23
Chamber Volumes ......................................................................................................................................23
Chamber Dimensions ................................................................................................................................23
Schematic..........................................................................................................................................................24
Warranty ............................................................................................................................................................28
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Table of Contents

The 700 Series premium ovens are available in three sizes:
small (Models OV700F and OV700 ), medium (Models
OV701F and OV701 ) and large (Models OV702F and
OV702 ). All models provide PD Microprocessor control at
operating temperatures ranging from 50°C (122°F) to 275°C
(527°F).
The forced air models provide improved temperature uniformi-
ty and control, as well as faster drying. In these models, fresh
air enters through an air intake on the bottom of the oven,
then is heated in a plenum below the chamber. A blower cir-
culates the heated air into the wall plenums and the oven
chamber itself in uniform flow patterns. Exhaust air is vented
through a port at the top of the oven.
ravity flow models inlet air through a port located under the
oven floor. Heat generated convection then gently moves the
air in a vertical circulation pattern. Exhaust air is vented
through a port at the oven top.
Temperature readouts and control parameters are shown on
red LEDs. Three additional LEDs indicate when heater power
is being applied, an error condition is encountered, or the
temperature is being set.
The Models OV700F and OV700 accommodate a maximum
of five shelves. The Models OV701F and OV701 hold eight
shelves, while the OV702F and OV702 each hold eleven.
Ovens incorporate a variety of safety features. A safety back-
up is built into the controller software: if the primary heater
control fails, the backup will maintain control at 5°C above the
set point. An alarm LED then indicates that the backup con-
troller is operating the oven. A circuit breaker protects the
oven from power surges. If primary and back-up heater con-
trols fail, an independent Over Temperature Device will disen-
gage heater operation.
The silicon rubber gasket supplied with the oven is good for
continuous use up to 250°C and intermittent use to 275°C.
This gasket provides a better seal than the high temperature
gasket and is supplied with is supplied with the unit. An
optional high temperature braided gasket is available for cus-
tomers using the oven frequently above 250°C. The part num-
bers of the supplied and optional gasket are listed below:
3
Introduction
Model Silicon Rubber asket Part # Braided asket Part #
(Supplied with Oven) (High Temp asket Optional)
OV700F, OV700 CP 101908 SPN 95782
OV701F, OV701 CP 101909 SPN 95783
OV702F, OV702 CP 101910 SPN 95784

4
Selecting a Location
The oven requires an area approximately 2 ft x 2 ft. The
bench selected must be capable of supporting at least
120 lbs for the Models OV700F and OV700 , 130 lbs for
the Models OV701F and OV701 , or 135 lbs for the
Models OV702F and OV702 . Proper electrical power
must be available. Locate the oven such that no exten-
sion cord is required. The oven shall have a 2” air clear-
ance on all sides (6” if combustible materials) and a mini-
mum of 24” air clearance on top to allow heat dissipation
and prevent temperture build ups.
Unpacking
Our ovens are shipped in a single carton. After unpacking,
locate each item shown in the list below. Report any miss-
ing items, by name and part number, to technical support.
In the event of shipping damage, retain the shipping
material and file a claim with the final carrier.
Item
Oven Assembly
Models OV700F & OV700 (small)
120 V, 60 Hz
240 V, 50/60 Hz
Models OV701F & OV701 (medium)
120 V, 60 Hz
240 V, 50/60 Hz
Models OV702F & OV702
120 V, 60 Hz
240 V, 50/60 Hz
Shelves
Models OV700F, OV700 , OV701F, OV701
(one provided)
Models OV702F, OV702 (two provided)
Shelf Supports
Models OV700F, OV700 , OV701F, OV701
(two provided)
Models OV702F, OV702 (four provided)
Instruction Manual
Warranty Card
Installation

5
Preparing the Oven
To prepare the oven for operation, perform the following
procedures:
1. Install the shelf.
2. Make certain all packing material has been
removed from oven chamber.
3. Connect the line cord to an appropriate electri-
cal outlet.
4. The oven is now ready for operation. No prelimi-
nary adjustments or calibrations are required.
Power Switch
The 700 Series ovens feature a front panel mounted
power switch which is a Switch combination power switch
and circuit breaker, eliminating the need for separate
fusing. The circuit breaker will interrupt power in the event
of an oven heater malfunction.
Press the I (upper) half of the rocker-type power switch to
the in position to turn the oven on. Press the 0 (lower)
half to the in position to turn off oven power. To reset the
breaker, first place the switch to the off position, then
return it to the on position.
INSTALLATION
Caution
See data plate on oven for voltage,
current and line frequency specifica-
tions. Check that the power require-
ments of the oven will not overload the
circuit to which it will be connected.
|
O
ON
OFF

6
The following sections briefly describe the locations and
functions of various display fields and keypad controls.
More detailed descriptions are provided, when required,
in the operating sections of the manual.
Display
The 700 Series controller features a bright, one-half inch
LED numeric display which reads out the oven tempera-
ture. Three smaller LEDs indicate, respectively, an alarm
condition, that power is being applied to the oven heaters
or that the control temperature is being set. Each display
field is discussed separately below.
Temperature Display
In the normal operating mode, shows the current oven
temperature. During programming, indicates the oven set
temperature target.
Heat Indicator
Lights when power is being supplied to the oven heater.
Alarm Indicator
Lights if the actual oven temperature exceeds the alarm
temperature. The alarm temperature is factory-adjusted
to be 5°C above the set temperature.
Program Indicator
Lights when the control temperature is being set.
Controls
2 0 0
HeatAlarmProgram
∞C
Menu Set Decrease
Increase
Figure 1: Disp ay Fie ds

7
Keypad
The 700 Series incorporates a four-key, tactile keypad.
The function of each key is discussed individually below.
Pressing MENU will cause display to show C A L, then
pressing SET will display calibration offset.
Pressing the INCREASE key while holding down the SET
key increases the oven set temperature, as indicated on
the temperature display.
Pressing the DECREASE key while holding down the
SET key decreases the oven set temperature, as indicat-
ed on the temperature display.
Pressing SET causes the display to show the set temper-
ature. Used with the INCREASE and DECREASE keys
and to change the set temperature. With MENU to ac-
cess entry of a temperature display offset.
CONTROLS

8
The 700 Series ovens maintain a set temperature until
that set temperature is changed. To set a temperature,
perform the following:
1. Place the power switch in the ON position. All 8s
will flash as a test of the display.
2. Press and hold SET.
3. Observe the set temperature in the display win-
dow.
4. To decrease the set temperature, press the
DECREASE key while holding SET.
5. To increase the set temperature, press the
INCREASE key while holding SET.
6. When the desired set temperature is shown,
release the INCREASE or DECREASE keys.
Finally, release the SET key. The oven automati-
cally begins to control at the set temperature.
Safety Precautions
• This unit is not explosion proof. Do not use in
the presence of flammable or combustible mate-
rials; Fire or explosion may result. Unit contains
components that may ignite such materials.
Before operating ovens, always observe the fol-
lowing safety precautions:
• Fumes and spillage from acidic solutions cause
corrosion of the stainless steel chamber. Care
should be taken to maintain a neutral PH at all
times.
• The heater for the unit is in the bottom of the
unit. Surface temperatures at the bottom cover
of the unit may be higher than set point temper-
ature. For example: A plastic container on the
heater cover may become hot enough to
melt/burn the container at settings below the
melting point of plastic. Do not place items on
the heater cover.
Operation
Note
To rapidly increase or decrease the
set temperature press an hol the
appropriate arrow key. To slowly
increment or decrement the set tem-
perature one degree at a time, press
an imme iately release the arrow
key.

9
• Wear insulated gloves.
• Use tongs.
• Never stand in front of an open oven.
• Use safety goggles.
Limit Alarms
The 700 Series controllers feature a deviation alarm
which alerts the operator and and interrupts heater power
whenever the actual oven temperature differs from the
set temperature by more than 5°C. This set limit cannot
be adjusted by the operator.
• If the actual temperature exceeds the alarm
limit, the alarm indicator LED will light and the
display will indicate EEE.
• The reference point for the alarm is the set tem-
perature. Any change in the set temperature will
cause a corresponding shift in the alarm temper-
ature.
Example: If the set temperature is 150°C, the
alarm will trip at 155°C. If the set temperature is
changed to 200°C, the alarm will follow the set
temperature and trip at 205°C.
• Changing the set temperature to a value more
than 5°C below the present oven temperature
will trip the alarm. Power is removed from the
heaters when an alarm condition occurs.
Display Offsets
The 700 Series controllers permit the operator to select a
display offset Offsets temperature. With a display offset
entered, the temperature displayed will be the actual oven
temperature (measured at the control thermocouple) plus
or minus the display offset selected. Functionally, the off-
set feature permits the operator to measure and calibrate
such that the display will indicate the temperature at a
specific point or zone within the oven. To enter a display
OPERATION