Middleby Marshall PS2020 Series Operation manual

OWNER’S
OPERATING &
INSTALLATION
MANUAL
PS2020 Series Electric Ovens
PS2020 Series Electric Ovens: English
Combinations:
• Single Oven
• Double-Stacked Oven
© Middleby Marshall Inc. All rights reserved.

The information contained in this manual is important for the
proper installation, use, maintenance, and repair of this oven.
Follow these procedures and instructions to help ensure
satisfactory baking results and years of trouble-free service.
Errors – descriptive, typographic, or pictorial – are subject to
correction. Specifications are subject to change without notice.
This Owner’s Operating and Installation Manual should be given to the user.
The operator of the oven should be familiar with the
function and operation of the oven.This manual must be kept in a prominent,
easily reachable location near the oven.
Middleby Marshall suggests a service contract with a Middleby Authorized
Service Agent (ASA).
Please carefully read this manual and retain it for future reference.

For further information, call
877-34-OVENS
or
877-346-8367

This page intentionally
left blank

Table of Contents
Safety Information
Important Safety Information - Please Read First i
General Safety Information i
Reducing Fire Risk ii
Preventing Oven Damage ii
Grounding Instructions ii
Power Cord Replacement ii
Specifications and Installation
PS2020 Dimensions 1
PS2020 Electrical Specifications 1
Packaging 2
Certifications 2
Construction 2
Installation Instructions 2
Delivery and Initial Inspection 2
Lifting the Oven 2
Oven Location and Placement 2
Installation Near Open Heat Source 3
Ventilation Requirements 3
Cleaning
Daily Cleaning Instructions 4
Weekly Cleaning Instructions 5-7
Standard Oven Operation
Oven Controls 8
Cooking 9-10
Editing a Cooking Profile 11
Changing a Cooking Profile Name 11
Adjusting the Belt Speed 12
Adjusting the Temperature 12
Adjusting the Top and Bottom Air 12

Oven Modes
Config Mode 13
Smart Card Screen (Loading a Menu) 13
Accessing the Fault Count Screen 13
Accessing the Setup Mode 13
Setup Mode 13
Changing the Display Temperature 14
Changing the Belt Direction 14
Edit Options Screen 14
Changing the Speaker Volume 15
Info Screen 15
Updating the Firmware 15
Troubleshooting 16-17
Replaceable Parts 18
North America Limited Warranty 19-22
International Limited Warranty 23-26

i
SAFETY INFORMATION
Important Safety Information – Please Read First
Improper installation, adjustment, alteration, service, or maintenance of this equipment can
cause property damage, injury, or death. Thoroughly read the installation, operating, and
maintenance instructions before installing or servicing this equipment. Strictly adhere to the
following safety information to reduce the risk of:
oDamage to the oven
oDamage to property near the oven
oPersonal injury
oBurns
oFire
oElectric shock
General Safety Information
oUse this appliance only for its intended uses as described in this manual.
oOnly qualified service personnel should service this appliance. Contact the nearest
authorized service facility for examination, repair, or adjustment. Visit
www.middlebymarshall.com to find your nearest Authorized Service Agent.
oAlways ensure the oven is disconnected from the power supply before servicing,
repairing, or adjusting any components or parts.
oThis appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
oThe equipment warranty is not valid unless the oven is installed, started, and
demonstrated under the supervision of a factory certified installer.
oThe equipment is only for professional use and shall be used by qualified personnel.
oDO NOT place the cord near heated surfaces.
oDO NOT store or use flammable vapors or liquids (e.g., gasoline) in the vicinity of this
appliance.
oDO NOT allow children to use this appliance. Children should be supervised to ensure
that they do not play with the appliance
oDO NOT place corrosive chemicals or vapors in this appliance. It is not designed for
industrial or laboratory use.
oDO NOT Operate this appliance if it:
Has a damaged cord or plug
Is not working properly
Has been damaged or dropped
oDO NOT cover or block any openings on this appliance.
oDO NOT store this appliance outdoors.
oDO NOT use this appliance near water.
oDO NOT immerse this appliance or any of its components (e.g., cord, plug, etc.) in water.
oDO NOT let the cord hang over the edge of a table or counter.

ii SAFETY INFORMATION
Reducing Fire Risk
If materials inside the oven ignite or if smoke is observed,
1. Turn off the oven.
2. Disconnect the power cord or shut off power at the fuse/circuit breaker panel.
o
Carefully attend the oven if paper, plastic, or other combustible materials are placed
inside the oven to facilitate cooking.
oDO NOT leave items in the cook cavity when the oven is not in use.
oDO NOT cook items wrapped in cling wrap or plastic film.
oDO NOT overcook food.
Preventing Oven Damage
o
When servicing this appliance, do not tear insulation to get to components. Rather, find
the edge of the insulation and remove the tape that holds it in place.
oClean the oven daily.
oClean the oven only with approved cleaner.
oDO NOT clean with a water jet.
oDO NOT allow cleaning solution or water to remain in the cook cavity longer than
necessary.
Grounding Instructions
WARNING: Improper grounding increases the risk of electric shock.
This appliance must be grounded. The cord is equipped with a grounding wire and plug,
which in the event of an electrical short circuit, reduce the risk of electric shock by providing
an escape wire for the electric current. The wire must be plugged into an outlet that is
properly installed and grounded.
Consult a qualified electrician or serviceman to determine whether or not the appliance is
properly grounded.
oDO NOT use an extension cord. If the power supply cord is too short, request a qualified
electrician or serviceman to install an outlet near the appliance.
Power Cord Replacement
To avoid potential hazards, only the manufacturer, its service agent, or a similarly-qualified
person should replace a damaged power cord.

1
SPECIFICATION AND INSTALLATION
PS2020 Dimensions
Exterior
Height 13.0” (330 mm)
--with legs 17.0” (432 mm)
Width 48.0” (1219 mm)
Depth 35.8” (909 mm)
Conveyor
Length 48.0” (1219 mm)
Width 20.0” (508 mm)
Electrical Specifications
North America
3 Phase
208/240 VAC
50/60 Hz
40 amp current draw
Max Input: 14.4 kW
4-wire supply
NEMA 15-50P plug (4-pin IEC60309 available
by special order)
50-amp max circuit breaker protection
Europe/Asia (220-240 VAC)
3 Phase
220-240 VAC
50/60 Hz
40 amp current draw
Max Input: 14.4 kW
4-wire supply
IEC60309 4-pin plug
64-amp max circuit breaker protection
Europe/Asia (380-415 VAC)
3 Phase
380-415 VAC
50/60 Hz
20 amp current draw
Max Input: 14.4 kW
5-wire supply
IEC60309 5-pin plug
32-amp max circuit breaker protection
Figure 1: PS2020 Oven Dimensions – Side
Figure 2: PS2020 Oven Dimensions – Top
Figure 3: PS2020 Oven Dimensions – Front (Single)
Figure 4: PS2020 Oven Dimensions – Front (Double)
35.8"(909 mm)35.8"(909 mm)
8.5"
8.5"
(216 mm)
(216 mm)
48.0" (1219 mm)
48.0" (1219 mm)
W/O 12"W/O 12" eexxttensionsensions
17.0"
17.0"
(432 mm)(432 mm)
4.0"
4.0"
(102 mm)
(102 mm)
13.0"
13.0"
(330mm)
(330mm)
48.4"(1229 mm)48.4"(1229 mm)
4.0
4.0
(102 mm)
(102 mm)
30.0
30.0
(1092 mm)(1092 mm)
13.0
13.0
(330 mm)
(330 mm)
13.0
13.0
(330 mm)
(330 mm)

2SPECIFICATION AND INSTALLATION
Packaging
All ovens are packaged in a double-wall corrugated
box with integrated wooden skids. All international
ovens shipped via Air or Less than Container Loads are
packaged in wooden crates.
Certifications
Construction
- 430 stainless steel front, top, sides, and back
- Cool to touch covers and panels
- Stainless steel interior
- 20-inch-wide cook chamber
Installation Instructions
The oven is designed and certified for safe
operation when installed in accordance with local and/
or national codes. It is the owner and/or installer’s
responsibility to comply with any codes that may
exist. Install this oven according to the policies and
procedures outlined below and throughout this manual.
WARNING: Death, injury, and equipment
damage can result from improper installation
of a unit damaged during shipment or storage.
WARNING: Do not install an oven suspected
of damage. Improper installation or the
installation of a unit damaged during shipment
or storage may void the Limited Warranty.
Delivery and Initial Inspection
All Middleby Marshall ovens are shipped so as to
prevent damage.
Upon delivery, inspect the shipping container for
external damage. Any evidence of damage should be
noted on the delivery receipt which must be signed by
the driver.
Upon removing the oven from its shipping carton, check
for damage. Make note of any damage and contact the
shipping company to file a claim. Carriers will accept
claims for concealed damage if notified within fifteen
days of the delivery and if the shipping container is
retained for inspection.
Middleby Marshall does not assume responsibility for
any loss or damage suffered in transit. The carrier
assumes full responsibility for delivery in good order
when the shipment is accepted. However, when
necessary, Middleby Marshall can assist in filing a
claim.
Lifting the Oven
WARNING: Two or more people are required to lift
the the PS2020 (195 lb. (88.5kg)).
Position one or more people on either side of the oven.
Lift from the bottom. Never lift the oven from the front
and rear. The countertop must be at least 30” (762 mm)
deep and capable of supporting 200 lb. (90.7 kg) for the
PS2020.
Once properly positioned on the counter, plug the oven
into a wall mounted electrical receptacle. See Electrical
Specifications on page 1 for the PS2020.
Oven Location and Placement
WARNING: Death, injury and equipment
damage may result from improper positioning.
WARNING: DO NOT stack ovens without
stacking brackets. Contact Customer Service
for more information.
WARNING: DO NOT stack ovens more
than three high.
It is the operator’s responsibility to ensure the oven is
properly positioned on countertop. Middleby Marshall
will not warrant any damage or injury to ovens that
fall off countertops due to improper placement.

3
SPECIFICATION AND INSTALLATION
Proper placement of the oven will enhance
long-term operator convenience and satisfactory
performance. Be sure to place the oven in an area
accessible for proper operation and servicing.
The surface on which the oven is placed must be at
least 30” (762 mm) deep and capable of supporting
200 lb. (90.7 kg) for the PS2020 (weights are per
oven). The manufacturer shall not assume liability
for damage or injury resulting from the improper
installation of this equipment including temporary or
unstable work stations or countertops.
The oven must be installed level front to back and
side to side. For additional stability, the oven legs
may be bolted to the countertop if desired.
Installation Near Open Heat
Source
When placing a Middleby Marshall oven near an
open heat source (see Figure 11), adhere to the
following:
- If the oven is being placed near a grill or stove,
a divider must exist between the oven and the
open heat source, with a minimum of 6” (152
mm) between the oven and the divider.
- If the oven is being placed near a fryer, a
divider must exist between the oven and fryer,
with a minimum of 12” (305 mm) between the
oven and the divider.
- The height of the divider must be greater than
or equal to the height of the oven(s) – 13” (330
mm) without legs or 17” (432 mm) with legs.
- Verify oven location has a minimum 10”
(254 mm) clearance on top and minimum
2” (51 mm) of clearance on each side.
Ventilation Requirements
PS2020 should be operated underneath a
ventilation hood, except where local laws or codes
allow for use without a ventilation hood, unless the
oven is a UL®-certified ventless model (available
upon request). For more information or to order a
ventilation hood, contact 877-346-8367, or your
local distributor.
PS2020 oven has been approved by Underwriter’s
Laboratory for ventless operation (UL®KNLZ
listing) for all food items except for foods classified
as “fatty raw proteins.” Such foods include bone-
in, skin-on chicken, raw hamburger meat, raw
bacon, raw sausage, steaks, etc. If cooking these
types of foods, consult local HVAC codes and
authorities to ensure compliance with ventilation
requirements.
PS2020 is approved for ventless operation while
single or double stacked.
To ensure continued compliance with all health,
building, and fire codes, you are required to
maintain clean and sanitary conditions around
your oven at all times.
NOTE: In no event shall the manufacturer assume
any liability for damages or injuries resulting from
installations which are not in compliance with the
instructions and codes previously listed. Failure
to comply with these instructions could result in
the issuance of a temporary cease and desist
order from the local health department until the
environment concerns are addressed.
Grill
Partition
Above Counter Top:
Single Oven = 17.0”(432 mm)
Double Stack = 30.0” (762 mm)
Triple Stack = 43.0” (1092 mm)
6”
(152 mm)
Minimum
12”
(305 mm)
Minimum
Deep Fryer
Counter Top / Table Partition
Above Counter Top:
Single Oven = 17.0”(432 mm)
Double Stack = 30.0” (762 mm)
Triple Stack = 43.0” (1092 mm)
Figure 11: Installation Near Open Heat Source

4CLEANING
= Wash, rinse, sanitize.
(Use only Middleby Marshall-approved
cleaner).
= Completely dry with clean towel.
1
Daily Cleaning Instructions
2
3
4
5
6
7
8
WARNING: Always disconnect power before cleaning or servicing oven.
WARNING: DO NOT attempt to clean the oven until it has cooled (screen reads “Oven Off”).
WARNING: DO NOT use a water jet when cleaning the oven.
BELT
10:00
BREAKFAST TOP AIR 80%
BTM AIR 80%
SET
475F
COOLING DOWN
LUNCH
BREAKFAST PIZZA
WINGS
OVEN OFF
LUNCH
BREAKFAST PIZZA
WINGS

5
CLEANING
WARNING: Always disconnect power before cleaning or servicing oven.
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BACK
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COOKING
BELT
10:00
BREAKFAST TOP AIR 80%
BTM AIR 80%
SET
475F
COOLING DOWN
LUNCH
BREAKFASTPIZZA
WINGS
OVEN OFF
LUNCH
BREAKFASTPIZZA
WINGS
1.
2.
Step 1: Turn the Oven O
2.
1.
3.
5.
4.
Step 2: Remove Outer Oven
Components
WARNING: DO NOT attempt to clean the oven until it has cooled (screen reads “Oven
Off”).
WARNING: DO NOT use a water jet when cleaning the oven.
Weekly Cleaning Instructions
= Wash, rinse, sanitize. (Use only
Middleby Marshall-approved cleaner).
= Completely dry with clean towel.
BELT
10:00
BREAKFAST TOP AIR 80%
BTM AIR 80%
SET
475F
COOLING DOWN
LUNCH
BREAKFAST PIZZA
WINGS
OVEN OFF
LUNCH
BREAKFAST PIZZA
WINGS

6CLEANING
1.
2.
3.
4.
5.
Step 3: Remove Inner Oven
Components
1
2
2
11
2
11
2.
4.
Step 4: Clean Oven Components
1.
3.
Replace lters if damaged or torn.

7
CLEANING
1.
2.
3.
4.
Step 5: Replace Oven Components
6.
7.
8.
5.
Step 7: Ready the Oven for Use
1.
2.
Step 6: Verify Chain Tension
Acceptable - Chain (A) is tight and
easily clears crumb tray holder (B)
A
B
Call service to have link removed - Chain (A) is
loose and risks contact with crumb tray holder (B)
A
B

8STANDARD OVEN OPERATION
Oven Controls
Figure 12.
1. Display
The display shows current oven operation
and/or user programming information.
2. Soft Keys
Six soft keys are on the oven controls, three
on the left (L1, L2, L3, where L1 = top) and
three on the right (R1, R2, R3, where R1 =
top). Use the soft keys to select the option/
command that is adjacent to it.
3. Up and Down Keys
When the oven is in the , use
the up key to access the  (page
13). Use the down key to access cooking pro-
files 5-8.
Also, press the up and down keys to adjust
various oven settings (see pages 11-15).
Oven Controls
Figure 19
4. Back/Off Key
Depending on the mode the oven is in, the
back/off key will return the oven to the previ-
ous screen or turn the oven off (page 9).
5. Idle Key
The idle key activates the  (page
12).
6. Emergency Stop Key
The emergency stop key shuts down the con-
veyor and heaters and returns the oven to the
(page 9).
NOTE: Depending on the temperature within
the oven, the cooling fans will remain on to
prevent damage to critical oven components.
CAUTION: DO NOT use the emergency
stop key as a general on/off switch. Doing
so can damage the oven and shorten its
life span.
Figure 12: Oven Controls
L1
3
2 2
4
5
6
1
L1
L2
L3
R1
R2
R3

9
STANDARD OVEN OPERATION
Cooking
Figure 13.
This section explains how to cook a food
product by describing the “standard operation”
modes through which the oven progresses
(Figure 13).
- 1: Oven Off
- 2: Belt Speed Select
- 3: Warming
- 4: Soaking
- 5: Cooking
- 6: Cooling Down
- 7: Idle
NOTE:  7 is not part of a “standard”
cooking cycle. It only occurs when the user
intervenes as described on page 10.
Mode 1: Oven Off
Mode during which all cooking components
are off and the oven temperature has receded
below 150°F (66°C), but the display and key-
pad remain on. The user can access cooking
profiles 1-4 on this screen (1) or press the
down key to access cooking profiles 5-8.
Happens When...
-Power is supplied to the oven.
-The oven completes  6.
-The user presses the down key while
accessing the  (refer to page 14
for more information).
Goes To...
- 2 when the user selects a cooking pro-
file (soft keys L1, L3, R1, or R3).
-when the user presses the up
key.
Mode 2: Belt Speed Select
Mode during which the user selects the
desired belt speed.
NOTE: If a different key is pressed, the oven
will ask if you wish to continue or return to the
belt speed select screen. If you select con-
tinue, the oven will not save the belt speed.
Happens When...
-The user selects a cooking profile from 
1 or 6.
Goes To...
- 3.
L1
L2
L3
L1
L2
L3
L1
L2
L3
L1
L2
L3
L1
L2
L3
R1
R2
R3
BELT
10:00
BREAKFAST
TOP AIR 80%
BTM AIR 80%
SET
475F
COOLING DOWN
LUNCH
BREAKFAST PIZZA
WINGS
OVEN OFF
LUNCH
BREAKFAST PIZZA
WINGS
BELT SPEED
LUNCH
BREAKFAST PIZZA
WINGS
WARM UP
LUNCH
BREAKFAST PIZZA
WINGS
1
2
4
3
SOAKING
BELT
10:00
BREAKFAST
COOKING
5
COOLING DOWN
LUNCH
BREAKFAST PIZZA
WINGS
6
OVEN IDLE
LUNCH
BREAKFAST PIZZA
WINGS
7
L1
L2
L3
R1
R2
R3
L1
L2
L3
R1
R2
R3
L1
L2
L3
R1
R2
R3
L1
L2
L3
R1
R2
R3
L1
L2
L3
R1
R2
R3
L1
L2
L3
R1
R2
R3
Figure 13: Cooking Modes

10 STANDARD OVEN OPERATION
Mode 3: Warming
Mode during which the oven warms to the pre-
set cooking temperature defined by the cook-
ing profile that was selected.
Happens When...
- A selection is made from  2, and the
oven’s temperature at the beginning of
warmup was not within (less than) 25°F
(14°C) of the oven’s set temperature.
Goes To...
-  4 once the oven has reached the
temperature defined by the selected cooking
profile.
-  6 when the user presses the back/off
key and the oven is above 150°F (66°C).
Mode 4: Soaking
Mode during which the oven has completed
warming up and automatically allows an addi-
tional five minutes for the oven cavity surfaces
to warm.
Happens When...
-  3 completes (within 5°F [3°C] of set
point).
Goes To...
-  5 when soaking completes.
-  6 when the user presses the back/off
key and the oven is above 150°F (66°C).
Mode 5: Cooking
Mode during which the oven is ready to cook.
The user can place food on the conveyor to
cook, or edit cook settings if the full edit or flex
option is enabled. See page 11 for more infor-
mation on full edit and flex options.
Happens When...
-  4 completes.
- The user presses the idle key, up key, down
key, or any soft key during  7.
Goes To...
-  6 when the user presses the back/off
key.
-  7 when the user presses the idle key.
-  3 if the temperature drops 25°F (14°C)
or more below the set point.
Mode 6: Cooling Down
Mode during which the burner assembly shuts
off to allow the oven to cool.
Happens When...
- The user presses the back/off key from
 3 (and the oven temperature is above
150°F [66°C]), or from  4, 5, or 7.
Goes To...
-  1 when the oven temperature has
receded below 150°F (66°C).
- 2 when the user selects a cooking
profile.
Mode 7: Idle
Mode during which both blowers are reduced
to 30% and the belt speed reduces to 15
minutes to save power. All other oven compo-
nents remain the same.
If the Idle key is pressed once, a timer begins
that is twice as long as the longest belt speed
time in the menu (not necessarily the one cur-
rently selected to cook), after which the oven
goes into Idle mode.
To immediately enter Idle mode, press the Idle
key twice.
Happens When...
-The user presses the idle key from  5.
Goes To...
- 5 when the user presses the idle key,
up key, down key, or any soft key.
- 6 when the user presses the back/off
key.

11
STANDARD OVEN OPERATION
Editing a Cooking Profile
To edit a cooking profile, the oven must be
in the  and the full edit or flex
option must be enabled for each option to
be edited. For more information on selecting
between full edit, rigid, and flex options for
each editable setting, see Edit Options Screen
on page 14.
When the rigid option is enabled for a given
setting, the soft key adjacent to that setting
(Figure 14) is disabled and no menu editing is
allowed.
When the full edit option is enabled for a given
setting, that setting is fully customizable and
changes are saved once the oven returns to
the or .
When the flex option is enabled for a given
setting, that setting is customizable within flex
option limitations (as described in the follow-
ing sections), and changes will reset when
the oven returns to the  or 
.
NOTE: The flex option does not apply to edit-
ing a profile name.
This section assumes that the full edit option
is enabled (except where otherwise noted)
and that a cooking profile and belt speed have
been selected.
Changing a Cooking Profile Name
1. From the cooking screen (Figure 14),
press L1 to access the name change
screen (Figure 15).
2. Change the name of the cooking profile.
- The up key moves up through the
available characters. e.g. A,B,C…
- The down key moves down through the
available characters e.g. A,+,-, ,9,8…
- INS (L1) inserts a space.
- DEL (R1) deletes the selected character.
- ---> (R2) moves the cursor to the right.
- <--- (L2) moves the cursor to the left.
3. Press save (R3) to save the changes or
cancel (L3) to cancel any changes.
Figure 14: Cooking Screen Figure 15: Name Change Screen
L1
L2
L3
R1
R2
R3
BELT
10:00
BREAKFAST
COOKING
CANCEL
INS
PROFILE
DEL
SAVE
R1
R2
R3
R1
R2
R3
L1
L2
L3
L1
L2
L3

12 OVEN MODES
Adjusting the Belt Speed
1. Press the soft key adjacent to the conveyor
belt (Figure 14, page 11).
2. Adjust the time it takes for the conveyor
belt to completely cycle through the oven.
- The up key increases bake time in
5-second increments up to 15 minutes.
+ Flex option enabled: the user can only
increase the time up to an additional
15 seconds.
- The down key decreases bake time in
5-second increments.
+ Flex option enabled: the user
cannot decrease the time by more
than 15 seconds.
3. Press the soft key adjacent to the belt to
exit the belt speed controls.
Adjusting the Temperature
1. Press R2 (Figure 14, page 11) to access
the temperature controls.
2. Adjust the temperature (range is 300°F-
550°F [149-288°C]).
- Press the up key to increase the
temperature in 5°F/5°C increments.
+ Flex option enabled: the user can only
increase the temperature up to an
additional 10°F/5°C.
- Press the down key to decrease the
temperature in 5°F/°5C increments.
+ Flex option enabled: the user cannot
decrease the temperature by more
than 10°F/5°C.
3. Press R2 again to exit temperature
controls.
Adjusting the Top and Bottom Air
1. Press R1 or R3 (Figure 14, page 11) to
access the air controls.
2. Adjust the air speed.
- Press the up key to increase the air
speed in 5% increments up to 100%.
+ Flex option enabled: the user can only
increase the air speed by up to an
additional 15%.
- Press the down key to decrease the air
speed in 5% increments down to 30%.
+ Flex option enabled: the user cannot
decrease the air speed by more than
15%.
- Press the soft key again to exit the air
controls.