Oliver 691 Operation instructions

691S20000-CV
Walker, Michigan, U.S.A. 49534-7564
USER’S OPERATING AND INSTRUCTION MANUAL
MODEL 691 & 691-S
CONVECTION & CONVECTION WITH STEAM OVENS

0691S20001 0-1
691 & 691S ELECTRIC CONVECTION OVENS
INDEX
Section Description Document No. Page No.
SAFETY INSTRUCTIONS ------------------------------- 0691S20002 --------------------- 1-1
DESCRIPTION/SPECIFICATIONS -------------------- 0691S20003---------------------- 2-1
Description -------------------------------------------------------------------------------------- 2-1
Physical Specifications----------------------------------------------------------------------- 2-1
INSTALLATION / SETUP -------------------------------- 0691S20004 --------------------- 3-1
Inspection --------------------------------------------------------------------------------------- 3-1
Location Selection ---------------------------------------------------------------------------- 3-1
Sealing Oven to Mounting Surface ------------------------------------------------------- 3-1
Oven Setup ------------------------------------------------------------------------------------- 3-2
Electrical Connection ------------------------------------------------------------------------- 3-2
Water Connection ----------------------------------------------------------------------------- 3-4
Venting ------------------------------------------------------------------------------------------- 3-5
Test Cycle --------------------------------------------------------------------------------------- 3-5
OPERATING INSTRUCTIONS ------------------------- 0691S20005 --------------------- 4-1
Beginning Operation ------------------------------------------------------------------------- 4-1
The Keyboard and Displays --------------------------------------------------------------- 4-1
Idle Mode --------------------------------------------------------------------------------------- 4-2
Running an Automatic Program ---------------------------------------------------------- 4-2
Running Two Automatic Programs at the Same Time ------------------------------ 4-3
Pre-Alarm -------------------------------------------------------------------------------------- 4-3
Running a Manual Program --------------------------------------------------------------- 4-3
Adjusting the Temperature ----------------------------------------------------------------- 4-4
Adding Steam --------------------------------------------------------------------------------- 4-5
Opening and Closing the Vent ------------------------------------------------------------ 4-5
Changing the Fan Setting ------------------------------------------------------------------ 4-5
PROGRAMMING ------------------------------------------- 0691S20006 --------------------- 5-1
TROUBLESHOOTING ------------------------------------ 0691S20007 --------------------- 6-1
Error Code Display --------------------------------------------------------------------------- 6-1
Solving Other Problems --------------------------------------------------------------------- 6-2
Advanced Functions ------------------------------------------------------------------------- 6-5
Advanced Setup Mode (Re-calibration) ------------------------------------------------- 6-6
MAINTENANCE -------------------------------------------- 0691S20008 --------------------- 7-1
Cleaning ----------------------------------------------------------------------------------------- 7-1
Lubrication -------------------------------------------------------------------------------------- 7-1
Removal and Replacement Guide ------------------------------------------------------- 7-2
RECOMMENDED SPARE PARTS -------------------- 0691S20009 --------------------- 8-1
Continued

0691S20001 0-2
INDEX (Continued)
Section Description Document No. Page No.
REPLACEMENT PARTS SECTION
HOUSING / CHAMBER ASSEMBLY ----------------- 0691S20010 -------------------- 9-1
Drawing ---------------------------------------------------------------------------------------- 9-1
Parts List --------------------------------------------------------------------------------------- 9-2
DAMPER ASSEMBLY ------------------------------------ 0691S20011 ------------------- 10-1
Drawing ---------------------------------------------------------------------------------------- 10-1
Parts List -------------------------------------------------------------------------------------- 10-2
WATER SYSTEM ----------------------------------------- 0691S20012 -------------------- 11-1
Drawing ---------------------------------------------------------------------------------------- 11-1
Parts List -------------------------------------------------------------------------------------- 11-2
DOOR ASSEMBLY ---------------------------------------- 0691S20013 -------------------- 12-1
Drawing ---------------------------------------------------------------------------------------- 12-1
Parts List -------------------------------------------------------------------------------------- 12-2
FRONT CONTROL PANEL ASSEMBLY------------- 0691S20014 -------------------- 13-1
Drawing ---------------------------------------------------------------------------------------- 13-1
Parts List -------------------------------------------------------------------------------------- 13-2
ELECTRICAL SUB PANEL ------------------------------ 0691S20015 --------------------- 14-1
Drawing ----------------------------------------------------------------------------------------- 14-1
Parts List --------------------------------------------------------------------------------------- 14-2
REAR COVER ASSEMBLY ----------------------------- 0691S20016 -------------------- 15-1
Drawing ---------------------------------------------------------------------------------------- 15-1
Parts List -------------------------------------------------------------------------------------- 15-2
COVER ASSEMBLY -------------------------------------- 0691S20017 ------------------- 16-1
Drawing ---------------------------------------------------------------------------------------- 16-1
Parts List -------------------------------------------------------------------------------------- 16-2
ELECTRICAL DIAGRAM -------------------------------- 069S20018 -------------------- 15-1
Wiring Diagram 208 / 240 375 / 480 V -------------------------------------------------- 15-1
WARRANTY ------------------------------------------------- GEN 040225
WARRANTY PROCEDURE ----------------------------- GEN 040226
RETURNED PARTS POLICY---------------------------- GEN 040227
REV. 2/26/04

0691S20001 0-2
INDEX (Continued)
Section Description Document No. Page No.
REPLACEMENT PARTS SECTION
HOUSING / CHAMBER ASSEMBLY ----------------- 0691S20010 -------------------- 9-1
Drawing ---------------------------------------------------------------------------------------- 9-1
Parts List --------------------------------------------------------------------------------------- 9-2
DAMPER ASSEMBLY ------------------------------------ 0691S20011 ------------------- 10-1
Drawing ---------------------------------------------------------------------------------------- 10-1
Parts List -------------------------------------------------------------------------------------- 10-2
WATER SYSTEM ----------------------------------------- 0691S20012 -------------------- 11-1
Drawing ---------------------------------------------------------------------------------------- 11-1
Parts List -------------------------------------------------------------------------------------- 11-2
DOOR ASSEMBLY ---------------------------------------- 0691S20013 -------------------- 12-1
Drawing ---------------------------------------------------------------------------------------- 12-1
Parts List -------------------------------------------------------------------------------------- 12-2
FRONT CONTROL PANEL ASSEMBLY------------- 0691S20014 -------------------- 13-1
Drawing ---------------------------------------------------------------------------------------- 13-1
Parts List -------------------------------------------------------------------------------------- 13-2
ELECTRICAL SUB PANEL ------------------------------ 0691S20015 --------------------- 14-1
Drawing ----------------------------------------------------------------------------------------- 14-1
Parts List --------------------------------------------------------------------------------------- 14-2
REAR COVER ASSEMBLY ----------------------------- 0691S20016 -------------------- 15-1
Drawing ---------------------------------------------------------------------------------------- 15-1
Parts List -------------------------------------------------------------------------------------- 15-2
COVER ASSEMBLY -------------------------------------- 0691S20017 ------------------- 16-1
Drawing ---------------------------------------------------------------------------------------- 16-1
Parts List -------------------------------------------------------------------------------------- 16-2
ELECTRICAL DIAGRAM -------------------------------- 069S20018 -------------------- 15-1
Wiring Diagram 208 / 240 375 / 480 V -------------------------------------------------- 15-1
WARRANTY ------------------------------------------------- GEN 040225
WARRANTY PROCEDURE ----------------------------- GEN 040226
RETURNED PARTS POLICY---------------------------- GEN 040227
REV. 2/26/04

0691S20002 1-1
691 & 691S ELECTRIC CONVECTION OVENS
SAFETY INSTRUCTIONS
WARNING
VARIOUS SAFETY DEVICES AND METHODS OF GUARDING HAVE BEEN
PROVIDED ON THIS OVEN. IT IS ESSENTIAL HOWEVER THAT THE OVEN
OPERATORS AND MAINTENANCE PERSONNEL OBSERVE THE FOLLOWING
SAFETY PRECAUTIONS. IMPROPER INSTALLATION, MAINTENANCE, OR
OPERATION COULD CAUSE SERIOUS INJURY OR DEATH.
1. Read this manual before attempting to operate your oven. Never allow an untrained
person to operate or service this machine.
2. This oven must only be installed by qualified personnel. It also must be installed to
the specifications of local plumbing and electrical codes. See the installation section
of this manual for additional requirements.
3. Connect the oven to a properly grounded electrical supply that matches the
requirements shown on the electrical specification plate and follow specifications of
local electrical codes.
4. Disconnect and lock-out the oven from the power supply before cleaning or servicing.
5. Check and secure all guards before starting the oven.
6. Observe all caution and warning labels affixed to the oven.
7. Use only proper replacement parts.
8. Wear proper personal protective safety equipment.
9. Keep Hands away form the moving parts of this oven while it is in operation.
10. In addition to these general safety instructions, also follow the more specific safety
instructions given for the different areas of the oven in the operating instructions.
WARNING
DO NOT USE FOR OTHER THAN ORIGINALLY INTENDED PURPOSE.

0691S20003 2-1
691 & 691S ELECTRIC CONVECTION OVENS
DESCRIPTION/SPECIFICATIONS
Description
The Oven is a stainless steel, electric, forced air, (convection), oven with optional steam
injection capabilities. This oven offers consistent baking at all rack levels due to the
careful positioning of the heating and air circulation systems.
In addition to the above, this oven also offers many other features. It is well insulated with
a high quality asbestos free insulation. It is compact, attractive, quiet, and is
easily maintained. Should electrical servicing ever be required the electrical components
are readily accessible by removing the side or back panels.
The lighted, tempered glass door with its high temperature seal allows a full view of the
trays in the oven during baking.
The oven computer allows you to bake two items at once which makes the oven more
productive. It also has one of the fastest temperature recoveries on the market allowing
the oven to be turned off during non-peak hours, thus saving energy.
The oven has many protective features such as not allowing heating of the elements when
the door is open. Other features are re-settable thermal overloads on the motors, and a
high-limit thermostat.
The computer allows easy selection of baking programs. The programs combine precise
control of the pre-heat temperature, baking temperature, time, and pre-alarm functions.
Some models offer steam, and damper control. These functions offer precise baking
control by even inexperienced individuals.
Physical Specifications
Electrical Options Available:
3 phase, 60 hz, 480VAC, 14 Amps.
3 phase, 60 hz, 240VAC, 27 Amps.
3 phase, 60 hz, 208VAC, 24 Amps.
3 phase, 50 hz, 375VAC, 11 Amps
Product Capacities:
The Standard oven will hold (4) 18" X 26" pastry baking trays
these trays will be approximately 3-5/16 inches apart when in
the oven.

0691S20003 2-2
691 & 691S ELECTRIC CONVECTION OVENS
Space Requirements:
Single: 42” Deep x 33” Wide x 22-3/4” high.
Single with short stand and casters: 49” high.
Single with tall stand and casters: 62-1/2” high
Stacked 691 oven & 695 Proofer with casters: 63-1/4” high
Stacked 690 & 691 ovens with casters: 65-1/4” high
Clearance:
Left side = 2”.
Right side =12” in a fixed location, (to have access to electrical components), or
2” when mounted on another unit which has casters.
Back side = 4” to allow for venting and optional water connections.
Net Weight: Approximately 350 pounds.
Shipping Weight: Approximately 400 pounds.

691 & 691S ELECTRIC CONVECTION OVENS
0691S20004 3-1
INSTALLATION / SETUP
Inspection
Before excepting delivery inspect the carton and machine for damage. Note any damage
found on the shipping documents. Remember shipping damage is not covered by your
warranty, and is the responsibility of the carrier. Also report the damage to the dealer
from which the oven was purchased for further direction and assistant in filing a claim with
the carrier.
Location Selection
Select a location where the oven will be used. The oven must be set on a flat level
surface. It should have a grounded power supply of the same rating as shown on the
nameplate located on the rear of the oven and this power supply must be capable of
carrying the load that the oven will put on it (See “Electrical Connection” below). All ovens
must be properly vented (See “Venting” below). Model 691-S ovens must also be placed
near a water supply, (See “Water Connection” below for further information).
Ovens mounted on other units with casters should be placed so that they have a minimum
of two inches on each side and a minimum of four inches in the rear of the oven to provide
for proper venting, water, and electrical connections.
Ovens without casters should be placed so that there is a minimum of two inches on all
sides, except for the side with the electrical panel, (right side), which should have a
minimum of twelve inches. The rear of an oven without casters should be a minimum of
four inches away from adjacent surfaces to allow room for the electrical, water and venting
connections.
Sealing Oven to Mounting Surface
CAUTION
MAKE SURE THAT THE MOUNTING SURFACE IS ABLE TO SUPPORT THE WEIGHT
OF THE OVEN WHICH IS APPROXIMATELY 350 POUNDS PLUS AN ADEQUATE
SAFETY FACTOR BEFORE PLACING IT ON THE SURFACE.
The oven must be sealed to the mounting surface to comply with local sanitation codes.
For the purpose of sealing the unit a tube of NSF/FDA approved silicone sealant has been
provided with your unit. Apply, to the surface that the oven will rest on, a continuous bead
of sealant approximately 1/2 inch in from each of the four sides of the oven. After the
oven has been placed over this bead apply a second generous continuous bead at the
joint where the oven contacts the mounting surface thus totally sealing the bottom of the
oven to that surface.

691 & 691S ELECTRIC CONVECTION OVENS
0691S20004 3-2
Oven Setup
Ovens may be mounted to a fixed surface, attached to an “Oliver” oven rack with casters
or stacked on either a Oliver Model 690 Oven or and Oliver Model 695 Proofer. For
associated mounting heights for the above options see page 2-2.
CAUTION
USE CARE WHENEVER MOVING OVENS MOUNTED ON RACKS AS THEY ARE TOP
HEAVY AND PRESENT A TIPPING HAZARD.
Ovens attached to “Oliver” oven racks must be securely fixed to the rack with bolts.
Stacked units should be setup as shown on page 2-2 being sure that the alignment pins
on the top of the lower unit are securely positioned into the holes in the base of the upper
oven.
After the Oven has been mounted to a surface, attached to a rack, or stacked, remove the
shipping bracket, which secures the door. To remove the shipping bracket, remove the
two screws from the top of the door with a screwdriver and open the door. Replace these
screws and tighten securely. To remove the shipping bracket from the front of the oven
liner, remove the two hex head screws with a wrench. The bracket and screws may be
discarded. Replace the removed hex head screws with the two screws provided in a bag
taped to the floor of the oven chamber and tighten securely.
Electrical Connection
WARNING
THE OVEN MUST BE CONNECTED TO A PROPERLY GROUNDED ELECTRICAL
SOURCE OF THE SAME RATING AS THE MACHINE. FAILURE COULD RESULT IN
AN ELECTRICAL SHOCK WHICH MAY CAUSE INJURY OR DEATH.
WARNING
ALL WIRING AND ELECTRICAL REPAIRS SHOULD BE DONE BY A QUALIFIED
ELECTRICIAN. FAILURE TO DO SO MAY CAUSE SERIOUS INJURY OR DEATH.
CAUTION
SPECIAL HEAVY DUTY ELECTRICAL SERVICES AND WALL DISCONNECTS MUST
BE PROVIDED FOR SAFE OPERATION OF THE OVEN.

691 & 691S ELECTRIC CONVECTION OVENS
0691S20004 3-3
The following service requirements are recommended, dependent on the voltage of the
unit you have purchased. Your oven’s requirements can be found on the nameplate
attached to its rear surface.
Electrical Connection (continued)
For voltages other than those shown below please contact the factory. Check the voltage
at the disconnect before proceeding to the next step.
480 Volts = 20 Amp service
375 Volts = 20 Amp service
240 Volts = 30 Amp service
208 Volts = 30 Amp service
The oven is shipped from the factory with a power cord, which does not include a plug.
The power cord should be wired to a disconnect enclosure which is accessible from the
oven work area, leave at least two feet of slack so that access can be gained to the ovens
back and right side. A plug may be used between the disconnect enclosure and the oven
instead of hard wiring as described above. This makes sliding the oven out for service
more convenient. Whatever method is used the oven should be wired in a manner which
would conform to the U.S. “National Electric Code”.
CAUTION
FANS MUST ROTATE IN THE CLOCKWISE DIRECTION FOR PROPER AIRFLOW.
IMPROPER DIRECTION MAY CAUSE UNEVEN BAKES AND LONGER BAKING TIMES.
Check fan rotation for clockwise direction. After the oven has been “Set Up” and
connected to the electrical service do the following to check the rotation of the fans. Use
the following sequence to start the oven to check fan rotation direction:
•Turn the main power switch on, (green button). The oven should start after a
delay of 15-30 seconds. Once started the fan rotation can be checked.
•Once complete, turn the main power switch off, (red button).
If the rotation is incorrect remove and interchange any two of the three incoming power
leads (red, white and black), at the plug or disconnect enclosure and retest.