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

offset, carry out the following steps:
1. Press the MENU key, the display will indicate
CAL.
2. To view the present offset value, press and hold
the SET key.
3. To change the display offset, press and hold the
SET key. Press INCREASE or DECREASE until
the display indicates the desired offset.
4. Release the SET key.
5. Press MENU once to return to normal tempera-
ture control.
Example:
The displayed temperature is the result of algebraically
adding the actual temperature to the offset value. Thus, if
an offset of -3 degrees is being used, a measured tem-
perature of 50 degrees will be displayed as 47 degrees.
10
OPERATION

11
The following sections describe procedures for servicing
the 700 Series ovens. The first procedure, Rep acing the
Door Gasket, may be performed by most users. However,
all other service procedures involve potential exposure to
line voltage. These procedures should be undertaken only
by qualified service personnel. The second section,
Accessing the E ectronics Compartment, describes proce-
dures required for subsequent service sections and is ref-
erenced by these later sections when required.
Replacing the Door asket
The 700 Series ovens incorporate a durable, silicone door
gasket to minimize heat loss. Should the gasket become
defective or be damaged, it may be replaced by following
the procedures below.
1. Set the power switch to off position and open
chamber door.
2. Open door fully and lift it off of hinge pins. Lay
door on a flat surface with the handle over the
edge.
3. Note the joint position of the old gasket. This is
where the new gasket installation will start.
4. Bend back the old door gasket and remove the
Phillips head screws attaching the gasket.
5. Remove the old door gasket.
6. Loosely install two screws through the stainless
steel liner and into the door wrap to align these
pieces.
7. Begin installing the replacement gasket at the
joint position of the old gasket. Stretch the
replacement gasket around the corners of the
liner to avoid bunching up of the gasket materi-
al.
8. Install a Phillips head screw as the gasket
rounds each corner to keep the gasket properly
stretched. (The screw goes through the liner,
Service
Caution
Service procedures involve exposure
to line voltage and should be done only
by qualified service personnel.
Disconnect oven from power source
before attempting repairs.
Caution
Allow oven to cool to ambient temper-
ature before attempting repair.
Note:
Study the method of door gasket
attachment before starting disassem-
bly. This understanding will avoid con-
fusion later in this process.
Caution
Only factory authorized compo-
nents should be used for all repairs.
Failure to use factory authorized
replacement components will void
warranty and could result in unit
malfunction and or hazardous oper-
ating conditions.

12
pierces the gasket and threads into the door
wrap.)
9. After all four corners are secured, install the
remainder of the Phillips head screws. Make
sure there is no gap at the gasket joint; stretch
the gasket slightly if necessary.
10. Reinstall the door onto the hinge pins.
Accessing the Electronics
Compartment
To access the electronics compartment, proceed as fol-
lows:
1. Disconnect power cord from the electrical outlet.
2. Open the chamber door. Carefully lift the oven
door upward and off its two hinges. Set door
aside.
3. Slide the oven forward until the front of the
bezel (control panel) is at least three inches
from the edge of the bench top.
SERVICE
Caution
Allow oven to cool to ambient temper-
ature before attempting repair.
Caution
Service procedures requiring access
to the electronics compartment involve
exposure to line voltage and should be
done by qualified service personnel.
Disconnect oven from power before
attempting repairs.

4. Prop up the oven front by placing a shim under
each front foot. Use shims between one and
one-half and two inches in thickness.
5. Remove the screws securing bezel from bottom
of oven.
6. Slide the oven back on the table plus a few
inches (to set the bezel on the bench) and
rotate the bottom of the bezel out from the oven.
The top clips will come loose but the wiring will
still be connected.
7. Carefully set the bezel on the bench.
Replacing the Heater
To replace a defective heater, proceed as follows:
1. Disconnect power cord from the electrical outlet.
2. Remove the two screws that secure the heater
cover. Remove the cover by lifting and sliding it
forward. It may be necessary to use a flat-blade
screwdriver to assist in lifting the cover upward.
Set heater cover aside.
3. Remove the two nuts and shake proof washers
securing the heater leads, then pull the lead ter-
minals off the heater studs.
13
SERVICE
Caution
Service procedures requiring access
to the electronics compartment
involve exposure to line voltage and
should be done by quail fled service
personnel. Disconnect oven from
power before attempting repairs.

14
Caution
Sheet metal in this area is sharp. Work
carefully.
4. Remove the two screws securing heater to cabi-
net. Slide heater forward to disengage back
heater clips, lift back of heater up, then slide
heater back and lift out.
5. Install replacement heater and reassemble oven
by generally reversing the steps above.
Replacing the Cooling Fan
To replace a defective cooling fan, proceed as follows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment and
Rep acing the Heater steps 1 & 2 (remove the
heater cover). Note and observe all caution
statements.
2. Remove the two fan power wires from push-on
terminals located on fan housing.
3. Remove the three mounting screws holding the
fan in place.
4. Install replacement fan and reassemble oven by
generally reversing the steps above.
Replacing the Circulating Fan
Motor
To replace a defective circulating fan motor, proceed as
follows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment
2. Using an Allen wrench, loosen set-screw holding
the fan blade onto the motor shaft. Observe the
shaft has a flat side to prevent the set-screw
from turning on the shaft.
3. Locate the two electrical leads from the fan
motor. Remove the leads from the push-on ter-
minal strip located in the front of the oven bezel.
4. Lay the oven on its back with the oven bottom
facing forward.
SERVICE
Caution
When installing the replacement fan,
make certain air flow arrow molded
into fan housing points into the oven
chassis.
Caution
Service procedures requiring access to
the electronics compartment involve
exposure to line voltage and should be
done only by qualified service person-
nel. Disconnect oven from power
source before attempting repairs.

5. Detach the controller housing (oven bottom) by
removing the eight screws which fasten it to the
cabinet. Two screws are located on each side of
the oven and four on the bottom of the oven.
6. Locate the two access holes for the motor
mounting nuts located in the oven floor, in front
of and in back of the motor shaft.
7. Push an 11/32-in. nut driver through the front
access hole, gently pushing aside the oven
insulation until the nut driver reaches the front
motor mounting nut.
8. Remove front nut and washer, then repeat
process using back access hole to remove back
motor mounting nut and washer.
9. Remove the fan motor by sliding it out.
10. Install replacement fan motor by generally
reversing the steps above.
Replacing the Controller
To replace a defective controller, proceed as follows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment.
2. Locate terminal blocks on controller, remove all
wires connected to controller. Note color and
location of wires.
3. Remove four screws that hold controller to
bezel, then remove old controller.
4. Install new replacement controller and reattach
wires previously removed.
5. Check wiring connections against schematic,
making sure that the line power wire is attached
to the proper terminal, i.e., 120V or 240V.
6. Check switch DS1 setting: If forced air, set
switch A to ON, otherwise; set to OFF for gravi-
ty. Switch B should always be OFF.
SERVICE
Caution
Service procedures requiring access to
the electronics compartment involve
exposure to line voltage and should be
done only by qualified service person-
nel. Disconnect oven from power
source before attempting repairs.
15

16
Replacing the Solid State Relay
To replace a defective solid state relay, proceed as fol-
lows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment.
2. Consult the schematic and locate the solid state
relay (mounted on bezel).
3. Remove four lead wires from their screw-down
terminals.
4. Remove two Phillips screws which mount the
solid state relay to the bezel.
5. Lift out the solid state relay. Put new solid state
relay in place, making certain that the thin, con-
ductive pad remains between the solid state
relay and the bezel.
6. enerally reverse the steps above to re-assem-
ble oven.
Replacing the Safety Relay
To replace a defective safety relay, proceed as follows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment.
2. Consult the schematic and locate the safety
relay (mounted on bezel).
3. Remove four lead wires from their push-on ter-
minals.
4. Remove two Phillips screws which mount the
safety relay to the bezel.
5. Lift out the safety relay.
6. enerally reverse the steps above to install the
replacement safety relay and re-assemble oven.
SERVICE
Caution
Service procedures requiring access to
the electronics compartment involve
exposure to line voltage and should be
done by qualified service personnel.
Disconnect oven from power before
attempting repairs.
Caution
Service procedures requiring access
to the electronics compartment involve
exposure to line voltage and should be
done by qualified service personnel.
Disconnect oven from power before
attempting repairs.

Replacing the Control
Thermocouple
To replace a defective control thermocouple, proceed as
follows:
1. Complete the procedures discussed in
Accessing the E ectronics Compartment,
observing all Caution statements.
2. Remove thermocouples wires from 6-terminal
connector by loosening two securing screws.
3. On roof of oven, locate the clip, which holds
thermocouple in place. Remove thermocouple
from clip.
4. Pull thermocouple forward into oven chamber,
exposing roughly a 6-inch section of the thermo-
couple wire.
5. Cut the thermocouple wire to remove the ther-
mocouple sheath.
6. Securely loop together the cut end of the defec-
tive thermocouple with the two leads of the
replacement thermocouple. Wrap tape over the
length of the loops to secure them.
7. ently pull the defective thermocouple out
through the electronics compartment while guid-
ing the replacement thermocouple into place.
8. enerally reverse steps 1 through 3 to complete
installation of new thermocouple and reassem-
ble oven.
17
SERVICE
Note
Observe position in terminal for each
lead. When re-connecting, be certain
to observe polarity. Compare with
polarity indication on controller hous-
ing. For thermocouples, the red wire is
negative and yellow positive.
Caution
Service procedures requiring access
to the electronics compartment
involve exposure to line voltage and
should be done by qualified service
personnel. Disconnect oven from
power before attempting repairs.
Caution
Allow oven to cool to ambient tempera-
ture before attempting repair.

18
Replacing Door Hinges
To replace a defective door hinge, perform the steps
below:
1. Loosen hinge screws, one from each hinge.
Remove chamber door.
2. Remove the two mounting screws securing the
defective hinge.
3. Remove defective hinge and mount new hinge
by replacing the mounting screws.
4. Put door back onto hinges.
5. Tighten hinge set screws.
Replacing the Door Handle
To replace a defective door handle, perform the steps
below:
1. Remove the two mounting screws holding latch
cover in place.
2. Remove the two mounting screws holding
defective handle in place.
3. Mount the replacement handle.
4. Adjust bottom of cam. (13/16) from end of shaft.
5. Secure latch cover in place with two screws.
Adjusting the Door Cam
Due to handling in shipment or to heat distortion with use,
the door cam may require adjustment. To facilitate proper
closing and sealing of door. steps 1 through 6 may have
to be performed concurrently.
To adjust the door cam, perform the following:
1. Open door and remove screws holding latch
cover in place.
2. Locate nuts securing tongue on cam shaft.
3. Loosen but do not remove outside nut.
SERVICE
Caution
Service procedures requiring access to
the electronics compartment involve
exposure to line voltage and should be
done only by qualified service person-
nel. Disconnect oven from power
source before attempting repairs.
Caution
Allow oven to cool to ambient temper-
ature before attempting repair.

19
4. Adjust inside nut, one full-turn counter clockwise
draws door 1/16 inch closer to cabinet when
door is closed.
5. Secure cam tongue in place by tightening out-
side nut.
6. Secure latch cover in place with two screws.
SERVICE
Caution
Allow oven to cool to ambient tempera-
ture before attempting repair.