Frymaster G18FB Series User manual

Frymaster, a member of the Commercial Food Equipment Service Association, recommends
using CFESA Certified Technicians.
24-Hour Service Hotline [phone]-5654
05-98
G18FB & G24FB Series Gas Fryers
Installation & Operation Manual

G18FB & G24FB SERIES GAS FRYERS
TABLE OF CONTENTS
i
CHAPTER 1: General Information
1.1 Parts Ordering and Service Information............................................................................ 1-1
1.2 Safety Information............................................................................................................. 1-1
1.3 Equipment Description...................................................................................................... 1-2
1.4 Installation, Operating, and Service Personnel .................................................................1-2
1.5 Definitions......................................................................................................................... 1-3
1.6 Shipping Damage Claim Procedure.................................................................................. 1-3
CHAPTER 2: Installation Instructions
2.1 General Installation Requirements.................................................................................... 2-1
2.2 Caster/Leg Installation ......................................................................................................2-2
2.3 Pre-Connection Preparations............................................................................................. 2-3
2.4 Connection to Gas Line..................................................................................................... 2-3
2.5 Converting to Another Gas Type ...................................................................................... 2-5
CHAPTER 3: Operating Instructions
3.1 Start-Up Procedure............................................................................................................ 3-1
3.2 Boiling-Out the Frypot...................................................................................................... 3-2
3.3 Shutting the Fryer Down................................................................................................... 3-2
3.4 Controller Operation and Programming............................................................................ 3-3
Computer Magic III Controller ......................................................................................... 3-3
Analog Controller.............................................................................................................. 3-7
CHAPTER 4: Filtration Instructions
4.1 Draining and Manual Filtering.......................................................................................... 4-1
4.2 Built-In Filtration System Operation................................................................................. 4-1
Preparing the Filter Unit for Use....................................................................................... 4-2
Operation of the Filter Unit............................................................................................... 4-3
Changing the Filter Paper.................................................................................................. 4-5
CHAPTER 5: Preventive Maintenance
5.1 Fryer Preventive Maintenance Checks and Services ........................................................ 5-1
Daily Checks and Services................................................................................................ 5-1
Weekly Checks and Services ............................................................................................ 5-1
Monthly Checks and Services........................................................................................... 5-2
Quarterly Checks and Services.......................................................................................... 5-3
Semi-Annual Checks and Services.................................................................................... 5-6
5.2 Built-In Filtration System Preventive Maintenance Checks and Services........................ 5-7
CHAPTER 6: Operator Troubleshooting
6.1 Introduction....................................................................................................................... 6-1
6.2 Troubleshooting Fryers and Controllers ........................................................................... 6-2

G18FB & G24FB SERIES GAS FRYERS
TABLE OF CONTENTS
ii
6.3 Troubleshooting the Built-In Filtration System.................................................................6-5
6.4 Replacing the Controller....................................................................................................6-8

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 1: GENERAL INFORMATION
1-1
1.1 Parts Ordering and Service
Information
In order to assist you quickly, the Frymaster
Factory Authorized Service Center (FASC) or
Service Department representative requires
certain information about your equipment.
Most of this information is printed on a data
plate affixed to the inside of the fryer door.
Part numbers are found in the Installation, Op-
eration, Service, and Parts Manual.
Parts orders may be placed directly with your
local FASC or distributor. Included with
fryers when shipped from the factory is a list
of Frymaster FASCs and Distributors. If you
do not have access to this list, contact the
Frymaster Service Department at 1-800-551-
8633 or 1-318-865-1711.
When ordering parts, the following informa-
tion is required:
Model Number:
Serial Number:
Type of Gas or Voltage:
Item Part Number:
Quantity Needed:
Service information may be obtained by
contacting your local FASC/Distributor.
Service may also be obtained by calling the
Frymaster Service Department at 1-800-551-
8633 or 1-318-865-1711.
When requesting service, please have the fol-
lowing information ready:
Model Number:
Serial Number:
Type of Gas:
In addition to the model number, serial num-
ber, and type of gas, please be prepared to
describe the nature of the problem and have
ready any other information that you think
may be helpful in solving your problem.
RETAIN AND STORE THIS MANUAL IN
A SAFE PLACE FOR FUTURE USE.
1.2 Safety Information
Before attempting to operate your unit, read
the instructions in this manual thoroughly.
Throughout this manual, you will find nota-
tions enclosed in double-bordered boxes
similar to the one below.
CAUTION boxes contain information about
actions or conditions that may cause or result
in a malfunction of your system.
CAUTION
Example of a CAUTION box.
WARNING boxes contain information about
actions or conditions that may cause or result
in damage to your system, and which may
cause your system to malfunction.
WARNING
Example of a WARNING box.
DANGER boxes contain information about ac-
tions or conditions that may cause or result in
injury to personnel, and which may cause
damage to your system and/or cause your sys-
tem to malfunction.
DANGER
Hot cooking oil or shortening causes
severe burns. Never attempt to move a
fryer containing hot cooking
oil/shortening or to transfer hot
cooking oil/shortening from one
container to another.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 1: GENERAL INFORMATION
1-2
Your fryer is equipped with automatic safety
features:
1. High temperature detection shuts off gas to
the burner assembly should the controlling
thermostat fail.
2. An optional safety switch built into the
drain valve prevents burner ignition with
the drain valve even partially open.
1.3 Equipment Description
The G18FB and G24FB Series of gas fryers
are designed as liquid-batter style units. They
are capable of producing up to 50 pounds/25
liters (G18FB) or 65 pounds/36 liters (G24FB)
per hour of uniformly cooked fish, shrimp,
chicken, tempura, and similar products. The
fryers in this series employ an infrared burner
system to generate 80,000 BTU/hr (20,000
kcal, 84.4 megajoules, 23.4 kW).
Fryers may be ordered without any built-in
filtration capability (G18FB/G24FB) or ready
for attachment to an existing Filter Magic II
filtration system (FG18FB/FG24FB). The fry-
ers can also be ordered with a Filter Magic II
system positioned on either side of the fryer
(FMG18FB/FMG24FB). Additionally, up to
four units can be batteried to either side of a
Filter Magic II built-in filtration system to cre-
ate a high-production frying station. In
January 1998, the FPG18FB variant entered
production, adding the advantages of the
FootPrint III built-in filtration system to the
earlier Filter Magic option.
All fryers in this series are of an open-pot,
flat-bottomed design with no tubes, which
makes cleaning the frypot quick and easy.
Frypots are constructed of welded heavy-
gauge stainless steel. A drain valve is tapped
into the center of the frypot, with a front-
operated manual ball valve. Heating is sup-
plied by a pair of burner assemblies mounted
beneath the frypot. Combustion air for the
burners is supplied by a dedicated blower.
Each frypot is equipped with a temperature
probe for precise temperature control. The
probe is located on the centerline of the frypot
for rapid response to changes in loads, and to
provide the most accurate temperature meas-
urement.
The fryers in this series can be configured for
natural gas or Propane (LP) gas, as required by
the customer.
All fryers come standard with electronic igni-
tion. Control options include Computer Magic
III computers or solid-state analog controllers.
Each type is covered in detail in Chapter 3,
Operating Instructions.
All fryers in this series require an external
source of AC electrical power. Units can be
configured for voltages ranging from 120
VAC to 220 VAC.
Fryers equipped with FootPrint III built-in fil-
tration systems are shipped completely
assembled. Fryers without the FootPrint III
require installation of legs or optional casters
at point of use. All fryers are shipped with a
package of standard accessories. Each fryer is
adjusted, tested, and inspected at the factory
before crating for shipment.
1.4 Installation, Operating, and
Service Personnel
Operating information for this equipment has
been prepared for use by qualified and/or

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 1: GENERAL INFORMATION
1-3
authorized personnel only, as defined in Sec-
tion 1.5.
All installation and service on Frymaster
equipment must be performed by qualified,
certified, licensed, and/or authorized
installation or service personnel, as defined
in Section 1.5.
1.5 Definitions
QUALIFIED AND/OR AUTHORIZED OPERATING
PERSONNEL
Qualified/authorized operating personnel are
those who have carefully read the information
in this manual and have familiarized them-
selves with the equipment functions, or who
have had previous experience with the opera-
tion of the equipment covered in this manual.
QUALIFIED INSTALLATION PERSONNEL
Qualified installation personnel are individu-
als, firms, corporations, and/or companies
which, either in person or through a represen-
tative, are engaged in and are responsible for
the installation of gas-fired appliances. Quali-
fied personnel must be experienced in such
work, be familiar with all gas precautions in-
volved, and have complied with all
requirements of applicable national and local
codes.
QUALIFIED SERVICE PERSONNEL
Qualified service personnel are those who are
familiar with Frymaster equipment and who
have been authorized by
Frymaster
FrymasterFrymaster
Frymaster Corpora-
tion to perform service on Frymaster
equipment. All authorized service personnel
are required to be equipped with a complete
set of service and parts manuals, and to stock a
minimum amount of parts for Frymaster
equipment.
A list of Frymaster Factory Authorized Serv-
ice Centers (FASC) was included with the
fryer when shipped from the factory. Failure
to use qualified service personnel will void
the Frymaster Warranty on your equipment.
1.6 Shipping Damage Claim
Procedure
Your Frymaster equipment was carefully in-
spected and packed before leaving the factory.
The transportation company assumes full re-
sponsibility for safe delivery upon its
acceptance of the equipment for transport.
What to do if your equipment arrives
damaged:
1. File a claim for damages immediately,
regardless of the extent of damages.
2. Inspect for and record all visible loss or
damage, and ensure that this information
is noted on the freight bill or express re-
ceipt and is signed by the person making
the delivery.
3. Concealed loss or damage that was un-
noticed until the equipment was unpacked
should be recorded and reported to the
freight company or carrier immediately
upon discovery. A concealed damage
claim must be submitted within 15 days of
the date of delivery. Ensure that the ship-
ping container is retained for inspection.
Frymaster
FrymasterFrymaster
Frymaster DOES NOT ASSUME
RESPONSIBILITY FOR DAMAGE OR LOSS
INCURRED IN TRANSIT.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 2: INSTALLATION INSTRUCTIONS
2-1
2.1 General Installation
Requirements
PROPER INSTALLATION IS ESSENTIAL FOR
EFFICIENT, TROUBLE-FREE OPERATION OF
YOUR FRYER. ANY UNAUTHORIZED AL-
TERATIONS MADE TO THIS EQUIPMENT WILL
VOID THE FRYMASTER WARRANTY.
Upon arrival, inspect the fryer carefully for
visible or concealed damage. (See Shipping
Damage Claim Procedure in Chapter 1.)
CLEARANCE AND VENTILATION
The fryer(s) must be installed with a 6” (150
mm) clearance at both sides and back when
installed adjacent to combustible construction;
no clearance is required when installed adja-
cent to noncombustible construction. A
minimum of 24” (600 mm) clearance should
be provided at the front of the fryer(s). Air for
combustion enters the fryer(s) below the cabi-
net base.
One of the most important considerations of
efficient fryer operation is ventilation. Make
sure the fryer is installed so that products of
combustion are removed efficiently, and that
the kitchen ventilation system does not pro-
duce drafts that interfere with proper burner
operation.
The fryer flue opening must not be placed
close to the intake of the exhaust fan, and the
fryer must never have its flue extended in a
“chimney” fashion. An extended flue will
change the combustion characteristics of the
fryer, causing longer recovery time. It also
frequently causes delayed ignition. To pro-
vide the airflow necessary for good combus-
tion and burner operation, the areas surround-
ing the fryer front, sides, and rear must be kept
clear and unobstructed.
Fryers must be installed in an area with an
adequate air supply and adequate ventilation.
Adequate distances must be maintained from
the flue outlet of the fryer to the lower edge of
the ventilation filter bank. Filters should be
installed at an angle of 45º. Place a drip tray
beneath the lowest edge of the filter. For U.S.
installation, NFPA standard No. 96 states, “A
minimum distance of 18 in. (450 mm) should
be maintained between the flue outlet and the
lower edge of the grease filter.” Frymaster
recommends that the minimum distance be 24
in. (600 mm) from the flue outlet to the bottom
edge of the filter.
Information on construction and installation of
ventilating hoods can be found in the NFPA
standard cited above. A copy of the standard
may be obtained from the National Fire Pro-
tection Association, Battery March Park,
Quincy, MA 02269.
DANGER
Do not attach an apron drainboard to a
single fryer. The fryer may become
unstable, tip over, and cause injury.
The appliance area must be kept free
and clear of combustible material at all
times.
NATIONAL CODE REQUIREMENTS
The type of gas for which the fryer is equipped
is stamped on the data plate attached to the
inside of the fryer door. Connect a fryer
stamped “NAT” only to natural gas, and
those stamped “PRO” only to propane gas.
Installation shall be made with a gas connector
that complies with national and local codes.
Quick-disconnect devices, if used, shall like-
wise comply with national and local codes.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 2: INSTALLATION INSTRUCTIONS
2-2
ELECTRICAL GROUNDING REQUIREMENTS
All electrically operated appliances must be
grounded in accordance with all applicable
national and local codes. A wiring diagram is
located on the inside of the fryer door. Refer
to the rating plate on the inside of the fryer
door for proper voltages.
DANGER
If this appliance is equipped with a
three-prong (grounding) plug, it must
be plugged directly into a properly
grounded receptacle.
Do not cut or remove the grounding
prong from the plug.
DANGER
This equipment requires electrical
power for operation.
Place the gas control valve in the OFF
position in case of a prolonged power
outage.
Do not attempt to use the equipment
during a power outage.
FCC COMPLIANCE
The user is cautioned that any changes or
modifications to Frymaster computers not ex-
pressly approved by the party responsible for
compliance could void the user’s authority to
operate the equipment.
Frymaster computers have been tested and
found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC
rules. While these devices are verified as
Class A devices, they have been shown to
meet the Class B limits. These limits are de-
signed to provide reasonable protection
against harmful interference when the equip-
ment is operated in a commercial environ-
ment. This equipment generates, uses, and can
radiate radio frequency energy and, if not in-
stalled and used in accordance with the in-
struction manual, may cause harmful interfer-
ence to radio communications. Operation of
the equipment in a residential area is likely to
cause harmful interference in which case the
user will be required to correct the interference
at his own expense.
If necessary, the user should consult the dealer
or an experienced radio and television techni-
cian for additional suggestions.
The user may find the booklet “How to Iden-
tify and Resolve Radio-TV Interference Prob-
lems” helpful. It is prepared by the Federal
Communications Commission and is available
from the U.S. Government Printing Office,
Washington, DC 20402, Stock No. 004-000-
00345-4.
2.2 Caster/Leg Installation
Depending upon the specific configuration
ordered, your fryer may have been shipped
without installed casters or legs. If casters or
legs are installed, you may skip this section
and proceed to section 2.3, Pre-Connection
Preparations.
If your fryer requires the installation of
casters/legs, install them in accordance with
the instructions included in your accessory
package.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 2: INSTALLATION INSTRUCTIONS
2-3
2.3 Pre-Connection Preparations
DANGER
Do not connect fryer to gas supply
before completing each step
in this section.
After the fryer has been positioned under the
fry station exhaust hood, ensure the following
has been accomplished:
1. Adequate means must be provided to limit
the movement of fryers without depending
upon the gas line connections. If a flexible
gas hose is used, a restraining cable must
be connected at all times when the fryer is
in use. The restraining cable and installa-
tion instructions are packed with the flexi-
ble hose in the accessories box that was
shipped with your unit.
2. Single unit fryers must be stabilized by
installing restraining chains on fryers
equipped with casters or anchor straps on
fryers equipped with legs. Follow the in-
structions shipped with the casters/legs to
properly install the chains or straps.
3. Level fryers equipped with legs by screw-
ing out the legs approximately 1 inch then
adjusting them so that the fryer is level and
at the proper height in the exhaust hood.
Frymaster
FrymasterFrymaster
Frymaster recommends that the minimum
distance from the flue outlet to the bottom
edge of the filter be 24 in. (600 mm).
For fryers equipped with casters, there are no built-in leveling devices. The
floor where the fryer is to be installed must be level.
4. Test the fryer electrical system:
a. Plug the fryer electrical cord(s) into a
grounded electrical receptacle.
b. Place the power switch in the ON
position.
•For fryers equipped with analog
controls, verify that the power and
heat lights are lit.
•For fryers having computers, verify
that the display indicates CYCL.
c. Place the fryer power switch in the
OFF position. Verify that the power
and heat lights are out, or that the dis-
play is blank.
5. Refer to the data plate on the inside of the
fryer door to determine if the fryer burner
is configured for the proper type of gas be-
fore connecting the fryer to the gas supply
line.
6. Verify the minimum and maximum gas
supply pressures for the type of gas used in
accordance with the table below.
Incoming Gas Pressures
Gas Minimum Maximum
Natural 6" W.C.
1.49 kPa
14.93 mbar
14" W.C.
3.48 kPa
34.84 mbar
LP 11" W.C.
2.74 kPa
27.37 mbar
14" W.C.
3.48 kPa
34.84 mbar
2.4 Connection to Gas Line
The size of the gas line used for installation is
very important. If the line is too small, the gas

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 2: INSTALLATION INSTRUCTIONS
2-4
pressure at the burner manifold will be low.
This may cause slow recovery and delayed
ignition. The incoming gas supply line should
be a minimum of 1½” (38 mm) in diameter.
Refer to the chart below for the minimum
sizes of connection piping.
Gas Connection Pipe Sizes (I.D.)
(Minimum incoming pipe size should be 1 1/2" (38 mm))
Natural 3/4" (19 mm) 1" (25 mm) 1 1/4" (33 mm)
Propane 1/2" (13 mm) 3/4" (19 mm) 1" (25 mm)
Manufactured 1" (25 mm) 1 1/4" (33 mm) 1 1/2" (38 mm)
Gas Single Unit 2 - 3 Units 4 or more units*
* For distances of more than 20 feet (6 m) and/or
more than 4 fittings or elbows, increase the con-
nection by one pipe size.
Before connecting new pipe to your unit, the
pipe must be thoroughly blown out to remove
any foreign particles. If these foreign particles
get into the burner and controls, they will
cause improper and sometimes dangerous op-
eration.
1. Connect the fryer gas line, located at the left rear of the unit, to the building
gas line. Use a very small amount of pipe thread compound on male threads only.
Use a compound that is not affected by the chemical action of P gases ( octite•
PST56765 Sealant is one such compound). DO NOT apply compound to the first
two threads. This will ensure that the burner orifices and control valve do not
become clogged.
2. Open the gas supply to the fryer and check
all piping, fittings, and gas connections for
leaks. A soap solution should be used for
this purpose.
DANGER
Never use matches, candles, or any
other ignition source to check for
leaks.
If gas odors are detected, shut off the
gas supply to the fryer
at the main shut-off valve and contact
the local gas company or an
authorized service agency for service.
3. Close the fryer drain valve and fill the fry-
pot with water and boil-out solution to the
bottom OIL-LEVEL line at the rear of the
frypot. Light the fryer and perform the
boil-out procedures that are described in
the “Lighting Instructions” and “Boiling
Out the Frypot” topics found in Chapter 3
of this manual.
WARNING
“Dry-firing” your unit will cause
damage to the frypot. Always ensure
that melted shortening, cooking oil, or
water and boil-out solution is in the
frypot before firing your unit for any
extended period.
4. It is suggested that the burner manifold
pressure be checked at this time by the lo-
cal gas company or an authorized service
agent. Refer to “Check Burner Manifold
Pressure” in Chapter 5 of this manual for
the proper procedure.
Gas Pressure
Natural 3" W.C.
0.73 kPa
LP 8.25" W.C.
2.5 kPa
Burner Manifold Gas Pressure
s

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 2: INSTALLATION INSTRUCTIONS
2-5
5. Check the programmed temperature or
analog controller thermostat setting. (Re-
fer to Chapter 3, Operating Instructions,
for the setpoint programming instructions
for your particular controller.)
2.5 Converting to Another Gas Type
DANGER
Switching to a different type of gas
without installing the proper
components may result in fire or
explosion! NEVER attach your fryer to
a gas supply for which it is not
configured.
Your fryer is configured at the factory for ei-
ther natural gas or Propane (LP) gas.
If you desire to switch from one type of gas to
another, the conversion must be accomplished
by a Factory Authorized Service Center
(FASC) technician. The table below identifies
the components required for conversion from
one gas to the other.
810-1199
810-0917
810-0608
810-1198
810-0916
810-0521
I
g
nitor
Gas Conversion Components
Natural to LP
Orifice, LP, 2.00mm
Regulator Valve Spring, LP
I
g
nitor
LP to Natural
Re
g
ulator Valve Sprin
g
, Natural
Orifice, Natural, 3.26mm

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-1
3.1 Start-Up Procedure
CAUTION
If this is the first time the fryer is being
used after installation, refer to Section
3.2, Boil-Out Procedure.
CAUTION
The cooking oil/shortening capacity of
the G18FB fryer is 50 lbs (27 liters) at
70ºF (21ºC). The capacity of the G24FB
fryer is 64 lbs (36 liters) at 70ºF (21ºC).
Before lighting the fryer, make sure the
fryer is OFF and the frypot drain valve
is closed. Remove the basket support
rack, if installed, and fill the frypot to
the bottom OIL-LEVEL line.
If solid shortening is being used,
make sure it is packed down into the
bottom of the frypot.
Lighting the Fryer
1. Place the controller Power switch in the
OFF position.
After placing the ON/OFF switch in the
OFF position, turn the gas valve knob to
the OFF position. Wait 5 minutes, then
turn the knob to the ON position.
OFF
ON
Honeywell
OFF
ON
Honeywell
2. For units equipped with Analog control-
lers, place the controller Power switch in
the ON position and set the temperature
knob to normal cooking temperature. For
units equipped with Computer Magic III
controllers, press the Power switch to the
ON position and program the computer for
normal cooking temperature.
3. If the burners fail to light, place the Power
switch in the OFF position and wait 60
seconds. Repeat step 2.
4. The fryer will automatically enter the Melt
Cycle mode if the frypot temperature is
below 180ºF (82ºC). (NOTE: During the
melt cycle, the burners will repeatedly fire
for a few seconds, then go out for a longer
period.) When the frypot temperature
reaches 180ºF (82ºC), the unit will auto-
matically switch to the Heating mode. The
burners will remain lit until the frypot
temperature reaches the temperature set on
the thermostat or programmed into the
computer.
5. After the burners have been lit for at least
90 seconds, observe the flames through the
burner viewports located above and to the
right side of each burner.
The optimum burn is a bright orange-red
glow. If a blue flame is observed, or if
there are dark spots on a burner face, the
air/gas mix requires adjustment.
Viewports

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-2
Air/Gas Mix Adjustment Procedure
On the side of the blower housing opposite the
motor is a round, sheetmetal plate with a sin-
gle screw. Loosen the screw enough to allow
the plate to be moved, then adjust the position
of the plate to open or close the air intake
opening until a bright orange-red glow is ob-
tained. Carefully hold the plate in position
and retighten the screw.
3.2 Boiling-Out the Frypot
DANGER
Never leave the fryer unattended
during the boil-out process. If the boil-
out solution boils over, turn off power
to the fryer immediately and let the
solution cool for a few minutes before
resuming the process.
To ensure that the frypot is free of any con-
tamination resulting from its manufacture,
shipping, and handling during installation, the
frypot must be boiled out before first use.
Frymaster
FrymasterFrymaster
Frymaster recommends boiling out the frypot
each time the oil or shortening is changed.
1. Before lighting the burners, close the fryer
drain valve and fill the frypot to the bot-
tom OIL-LEVEL line with a mixture of
cold water and
Frymaster
FrymasterFrymaster
Frymaster FRYER ‘N’
GRIDDLE cleaner or detergent.
2. For units equipped with analog controllers,
set the thermostat to 200ºF (93ºC). For
units equipped with Computer Magic III
controllers, select the Boil-Out feature in
accordance with the procedure Using the
Boil-Out Feature on page 3-6.
3. Place the fryer into operation in accor-
dance with Section 3.1.
4. Simmer the solution for 1 hour.
5. After the solution simmers for 1 hour, turn
the fryer off, allow the solution to cool,
then add 2 gallons (7.75 liters) of cold
water and stir. Drain the solution into a
suitable container and clean the frypot
thoroughly.
WARNING
Do not drain boil-out solution into the
built-in filtration system. Doing so may
cause damage to the filtration pump.
6. Rinse the frypot at least twice by filling the
frypot with clean water and draining. Dry
the frypot thoroughly with a clean, dry
towel.
DANGER
Remove all drops of water from the
frypot before filling with cooking
oil/shortening. Failure to do so may
cause spattering of hot liquid when the
oil/shortening is heated to cooking
temperature.
3.3 Shutting the Fryer Down
For short-term shut down during the workday,
place the fryer power switch in the OFF posi-
tion and put the frypot covers in place (if the
fryer is so equipped).
When shutting the fryers down at closing time,
place the controller power switch in the OFF
position, then place the gas valve knob in the
OFF position.
Put the frypot covers in place (if the fryer is so
equipped).

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-3
3.4 Controller Operation and
Programming
FPG18FB fryers are equipped with Computer
Magic III controllers.
All other models are equipped with solid-state
analog controllers.
Each type is discussed in detail in the follow-
ing pages.
6
C Y C L
C Y C LC Y C L
C Y C L
COMPUTER MAGIC
7890R
L1 234 45
C Y C L
C Y C LC Y C L
C Y C L OFF
ON
OFF
ON
Frym a s te r
1 234 5
6 78
COMPUTER MAGIC III
COMPUTER MAGIC III CONTROLLER
The Computer Magic III control panel in-
cludes the following items:
1/2. Left and Right LED Displays
1/3. Temperature Check and Program Lock
Switch
4/5. Left and Right Frypot Power Switches
NOTE: Either switch will turn the fryer
on and off.
6/7. Left and Right Product Selection and
Coding Keys
1/8. Program Mode Switch
COMPUTER OPERATING INSTRUCTIONS
CAUTION
The electronic circuitry in your
computer can be affected adversely by
current fluctuations and electrical
storms. Should it fail to function or
program properly for no apparent
reason, the computer should be reset
by unplugging the computer and
plugging it back in. This could prevent
a service call.
Turn the computer on by pressing the Power
Switch (or ON/OFF Switch).
N
OTE:
Some computers
may have this
earlier style
ON/OFF Switch:
ON
OFF

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-4
NOTE: A decimal between digits 1 and 2 in
either LED Display indicates that the burners
are on.
1. One of the following will be displayed:
a. cycl
cyclcycl
cycl, indicating that the fryer is oper-
ating in the melt cycle mode. The
fryer will remain in the melt cycle
mode until it reaches 180ºF (82ºC) or
is canceled manually by pressing the R
key.
CAUTION
Do not cancel the melt cycle mode
until solid shortening is completely
melted.
b. hi
hihi
hi, indicating that the frypot tempera-
ture is 21ºF (12ºC) higher than the set-
point.
c. LO
LOLO
LO, indicating that the frypot tempera-
ture is 21ºF (12ºC) lower than the set-
point.
d. “- - - -,” indicating that the frypot tem-
perature is in the cooking range.
NOTE: For best results, cooking
should not be attempted unless the dis-
play indicates “- - - -.”
e. help
helphelp
help, indicating a heating problem.
f. hot
hothot
hot, indicating the frypot temperature
is in excess of 410ºF (210ºC).
g. prob
probprob
prob, indicating that the computer has
detected a problem in the temperature
measuring and control circuits.
h. If the computer has been programmed
by the operator for constant tempera-
ture display, the actual frypot tem-
perature will be displayed.
2. Press a product switch to initiate a cook
cycle.
a. The display will indicate the previ-
ously programmed cook time and be-
gin countdown.
b. If shake time is programmed, the op-
erator will be notified of the need to
shake the product “X” seconds after
the cook cycle has begun (X = amount
of time programmed). An alarm will
sound, and the display will read SH#
SH#SH#
SH#,
where “#” will be the switch number.
If no shake time has been programmed,
sh
shsh
sh#
##
#will not appear during the cook
cycle. The alarm is self-canceling.
c. At the end of the cooking cycle, an
audible alarm will sound, cooc
cooccooc
cooc will be
displayed, and the associated product
switch indicator will flash. To cancel
the cook alarm, press the appropriate
switch.
d. At this time, the hold time will be dis-
played (if programmed greater than
zero), and the countdown will begin.
When the countdown reaches zero,
hD_
hD_hD_
hD_ will be displayed and an alarm
will sound. The blank will be the
switch number. The hold alarm is can-
celed by pressing the Programming
Switch [
[[
[. NOTE: If the display is in
use, the hold time countdown will not
be displayed.
3. To check the frypot temperature at any
time, press the Temperature Check Switch
once. To check the setpoint, press the
switch twice. If you suspect that the

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-5
temperature probe is defective, check the
temperature of the frypot with a
thermometer or pyrometer to verify that
the computer readout is reasonably close
to the measured reading.
4. During idle periods when the fryer is on
but not in use, “- - - -” should appear in
both displays. If not, check the actual
temperature and setpoint.
COMPUTER PROGRAMMING INSTRUCTIONS
1. Turn the computer on by pressing the
Power Switch (or ON/OFF ON
OFF Switch).
2. Enter the programming mode by pressing
the Program Mode Switch [
[[
[. Code
CodeCode
Code will
appear in the left display. If you enter the
programming mode by mistake, press the
switch again to exit the programming
mode. NOTE: If you try to enter the pro-
gramming mode while the computer is
cooking, the display will flash busy
busybusy
busy.
3. Enter the number 1 6 5 0 by pressing the
number keys. Unless this code is entered,
programming will not be accepted. This is
to prevent unauthorized persons from
changing your current instructions.
4. sp-
sp-sp-
sp-r(Setpoint) will appear in the left dis-
play. Any previously programmed tem-
perature setpoint will appear in the right
display. To change the setpoint, enter the
desired setpoint temperature using the
number keys. The highest setpoint allowed
is 375ºC (191ºC). Press the Program
Mode Switch [
[[
[to lock in the new setpoint
(or the old setpoint, if it was not changed).
5. selp
selpselp
selp (Select Product) will appear in the
left display. Press the product button to be
programmed (or press to return to the
normal operating mode).
6. sens
senssens
sens (Sensitivity) appears in the left dis-
play. Any previously programmed sensi-
tivity setting will appear in the right dis-
play. To change the sensitivity setting,
enter the new setting and press [
[[
[to lock it
in. If the setting was not changed, pressing
[
[[
[accepts the previous setting.
Sensitivity is a built-in feature that adjusts
cooking time to compensate for the drop in
frypot temperature when a basket of prod-
uct is placed into it. Different food prod-
ucts will vary in density, basket load size,
and initial temperature. Food products
will also vary in how well cooked a prod-
uct is required to be. A proper sensitivity
setting for each product will assure a
high-quality product each time. For ex-
ample: four ounces of fries can be pro-
grammed to be cooked to the same quality
as two and one-half pounds. Some ex-
perimenting with the range of 0 - 9 (0 be-
ing least sensitive and 9 being most sensi-
tive) may be required to obtain the desired
quality to meet your specifications, but
setting 5 is the recommended starting
point.
7. cooc
cooccooc
cooc (Cook Time) will now show in the
left display. Any previously programmed
cooking time will appear in the right dis-
play. Pressing [
[[
[will accept the current
cooking time. To change the cooking
time, enter the new time using the Number
keys. Press [
[[
[to lock in the new time.
8. sh_
sh_sh_
sh_ (Shake Time) appears in the left dis-
play. If your product requires shaking
during the cooking process, set the number
of seconds to cook before shaking using
the number keys.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-6
For example, entering “30” means the
product needs to be shaken after it has
been cooking for 30 seconds. At the end
of one minute, an alarm will sound and the
product switch will flash for 3 seconds. If
your product does not require shaking,
enter “0”. The number entered will appear
in the right display. Press [
[[
[to lock in the
programmed time.
9. hd_
hd_hd_
hd_ (Hold Time) will appear in the left
display. Set the time the product may be
held before serving, anything from 13 sec-
onds to 60 minutes. If you do not wish to
use the hold time feature, enter 0. Press [
[[
[
to lock in the time.
10. selp
selpselp
selp (Select Product) will again appear in
the left display. If more products are to be
programmed, return to Step 5 and follow
all instructions to this point, repeating for
each product.
11. When programming is completed, lock in
the whole program by pressing the Tem-
perature Check/Program Lock Switch .
USING THE BOIL-OUT FEATURE
CAUTION
Before using this feature, ensure the
frypot is filled with a mixture of cold
water and Frymaster FRYER ‘N’
GRIDDLE cleaner or detergent.
1. To program the fryer for boil-out, press the
Power Switch (or ON/OFF ON
OFF Switch)
followed by the Program Mode Switch [
[[
[.
Code
CodeCode
Code will appear in the left display.
2. Enter the code number 1 6 5 3. The right
display will read boil
boilboil
boil. The temperature is
automatically set for 195ºF (91ºC). The
fryer will attain this temperature and
remain there until the Power (or
ON/OFF ON
OFF ) Switch is pressed, which
cancels the boil-out mode. In high-altitude
locations, the fryer must be monitored
constantly for boil-over conditions. If
boil-over occurs, turn off the fryer
immediately, allow it to cool, then re-enter
the boil-out mode to continue the boil-out
process.
FRYER RECOVERY TIME CHECK FEATURE
1. The computer automatically checks the
recovery time each time the frypot tem-
perature drops below 250ºF (121ºC). To
check recovery time, press the Program
Mode Switch [
[[
[. Code
CodeCode
Code will appear in the
left display.
2. Enter the code number 1 6 5 2 on the num-
ber keypad. The recovery time will appear
in both displays for 5 seconds.
SELECTING FAHRENHEIT– CELSIUS DISPLAY
MODE
1. The computer can display temperatures in
either Fahrenheit or Celsius. To change
from one to the other, press the Program
Mode Switch [
[[
[. Code
CodeCode
Code will appear in the
left display.
2. Enter the code number 1 6 5 8 on the num-
ber keypad. The computer will toggle the
temperature display from Celsius to Fahr-
enheit or from Fahrenheit to Celsius.
3. Press the Temperature Check/Program
Lock Switch to display the temperature
in the newly selected mode.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-7
SELECTING FRYPOT TEMPERATURE DISPLAY
MODE
To display the actual frypot temperature at all
times, press the Program Mode Switch [
[[
[.
Code
CodeCode
Code will appear in the left display.
Enter code 1 6 5 L in both number keypads.
The computer will display the actual frypot
temperature. NOTE: During the pro-
ductcooking process, the cooking time will not
be displayed, but timing is taking place. To
return to setpoint display, repeat the process.
?
SOLID STATE
Trouble
Light
Temperature
Knob Melt Cycle Switch
C
F
Power
Switch
Power
On
Light
Melt
Cycle
Light
Heat
Mode
Light
Frym as te r
ANALOG CONTROLLER
ANALOG CONTROLLER
The analog controller uses a frypot-mounted
temperature probe and solid-state electronics
mounted on the control panel. The tempera-
ture probe is connected to the control circuitry
via an interface board behind the control
panel.
The cooking temperature is set by rotating the
Temperature Knob to the desired temperature.
When the Power Switch is placed in the ON
position, electrical current is supplied to the
fryer’s components and the Power On Light
illuminates. Placing the Melt Cycle Switch
in the ON position causes the burners to cycle
on for a few seconds and off for a longer pe-
riod until the temperature in the frypot reaches
180ºF (82ºC). At that time the unit automati-
cally enters the heat mode, causing the burners
to remain lit until the setpoint is reached.
When in the melt cycle, the Melt Cycle Light
will alternately illuminate and go out as the
burners cycle on and off. When the unit enters
the heat mode, the Heat Mode Light will
illuminate and remain on until the setpoint is
reached.

G18FB & G24FB SERIES GAS FRYERS
CHAPTER 3: OPERATING INSTRUCTIONS
3-8
The Trouble Light will illuminate if there is an
ignition failure. To reset the controller after an
ignition failure, place the Power switch in the
OFF position for 30 seconds, then place it
back in the ON position. The Trouble Light is
also used to indicate the presence of a probe
circuit or high limit circuit problem.