Belshaw 624, 618L Service Manual

Open Kettle Fryer

618L/624/634

Operator’s Manual

and

Technical Supplement

Belshaw Bros., Inc.
814 44th Street NW, Suite 103
Auburn, WA 98001 USA
Tel: [phone]
Fax: [phone]
Toll Free (US): 1-800-578-2547
E-mail: [e-mail]
www.belshaw.com

Electric Fryer

618L, 624, and 634

Operator’s Manual

Belshaw Bros., Inc.

814 44th Street NW, Suite 103

Auburn, WA 98001 USA

Phone: [phone] • Fax: [phone]

Email: [e-mail] • http://www.belshaw.com

If you accept the machine from the shipping
company, you are, in effect, saying that the
machine is in good condition, and you must
pay for the machine. Belshaw cannot pay for

shipping damage, because the freight company
has accepted the machine from Belshaw in good
condition, and is responsible for its safe delivery.
For your protection, inspect the machine to see
that no parts are bent, scratched, or otherwise
damaged. If any damage has occurred in
shipping, file a freight claim with the shipping
company immediately.

To unpack the fryer and transport it to the
workstation:

1. Use a fork lift to transport the shipping crate
to the work station.

2. Break down the shipping crate.

3. Remove all the packing materials from the
fryer. These include foam, tape, brown
paper, plastic, and white protective coating.

4. Position the fryer to allow sufficient space
on either end of the machine for any
equipment you plan to use with it.

IMPORTANT

Keep this manual for future reference.

EQUIPMENT RECORD

Please provide the information below when you correspond with us about your machine.
Purchased by _____________________________________________________________________
Installed by ______________________________________________________________________
Date of Installation ________________________________________________________________
Model number ___________________________________________________________________
Serial number

011108

MN-1127EN

Belshaw Bros., Inc.

814 44

th

Street NW, Suite 103

Auburn, WA 98001 USA

Phone: [phone] • Fax: [phone]

Email: [e-mail] • http://www.belshaw.com

Contents

Sections

1 Operation 1
2 Cleaning 3

Cleaning the Exterior Surfaces 3
Cleaning the Frying Screen 3
Cleaning the Kettle 3
Removing the Shortening 3
Washing 4
Rinsing 5
Drying 5

3 Donut-Making Helps 6

Tips on Making Quality Cake Donuts 6
Calculating Correct Water Temperature 7
Ratios of Plunger Sizes to Donut Weights 7
Temperature Conversion 7

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

618L, 624, and 634 Fryers OM MN-1127EN iii

Preface

The 618L, 624, and 634 Electric Fryers are
designed to fry cake and yeast-raised donut
products. Each must be bolted to a flat, dry
floor. The operator should stand opposite the
heater head.

The operator must work safely at all times and
read this manual and follow its instructions and
warnings. A thorough understanding of how to
install, maintain, and safely operate the fryer will
prevent production delays and injuries.

Heed the following warnings and all other
warnings that appear in this manual:

• Make sure the machine is bolted

securely to the floor. Doing so will
prevent the machine from moving,
tipping, or falling, which could cause
serious injury.

• To avoid damaging the machine, never

use force to assemble, disassemble,
operate, clean, or maintain it.

• Never let water and hot shortening come

in contact with each other. Moisture
causes hot shortening to spatter, which
may cause serious burns.

• Do not overfill the kettle with

shortening. If shortening overflows the
kettle, it could cause serious burns or
could cause someone to slip on the floor
and be seriously injured.

• Hot shortening can cause serious burns.

Make sure that the system and the
shortening are cool before attempting
any cleaning, adjustment, disassembly,
or repair.

• To avoid electrocution or other injury,

unplug the machine before attempting
any cleaning, adjustment, disassembly,
or repair.

• Be careful never to get shortening,

water, or other materials on the floor. If
anything does get spilled on the floor,
mop it up immediately. Materials on the
floor can cause people to slip or fall,
resulting in serious injury or loss of life.

• To prevent unintentional startup and

possible fire, unplug the machine if there
is a local power outage. When the
power is restored, it is safe to plug the
machine in again.

• To avoid electrocution, make sure that

all electrical cords are not frayed or
cracked and that they do not pass
through any water or shortening.

• Make sure that all electrical cords are

routed so that no one will trip over them.

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

iv MN-1127EN 618L, 624, and 634 Fryers OM

1 Operation

Read each step completely before doing what it
tells you to do.

1. If you are frying yeast-raised donuts, install
the proofer or feed table. Refer to the
proofer or feed table manual for complete
installation and operation instructions.

2. Make sure the drain valve is closed.

3. Put enough shortening in the kettle to
completely cover the heating elements,
thermocouple, and high-temperature limit
control probe.

Put shortening in the kettle using one of

these methods:

• If you have a Belshaw Shortening Melter

(FM) attached to the fryer, use the FM to
melt shortening and transfer it to the
kettle. See the FM manual.

WARNING

Hot shortening causes severe burns.

• Melt shortening in a pan on the stove

and pour it into the kettle.

4. Move the on/off switch to the ON position.
The switch is located inside the fryer
cabinet, on the right hand side.

The “Power On” pilot light on top of the

heater head will light up.

5. Set the thermostat to 250°F/121°C. The
“Heating” pilot light on top of the heater
head will light up, indicating that the
shortening has not yet reached the selected
temperature.

6. Continue adding shortening to the kettle
until it reaches the proper depth for frying.
Use one of the following methods. For
safety reasons, we recommend the first
method, and discourage you from using any
other method.

• Use a Belshaw Shortening Melter (FM)

to melt shortening and transfer it to the
kettle. See the FM manual.

• Melt shortening in a pan on the stove

and pour it into the kettle.

• Very carefully put solid shortening into

the kettle.

• Put solid shortening into the kettle,

packing it tightly around the heating
elements, thermocouple, and high­temperature limit control probe.

WARNING

Air spaces can cause the shortening to

overheat and catch on fire.

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618L, 624, and 634 Fryers OM MN-1127EN 1

To avoid serious burns, be very careful not

to splatter hot shortening when you add

Because shortening expands as it increases

in temperature, put shortening in the kettle
gradually. Let the shortening in the kettle
heat up before you add more.

7. After all of the shortening has melted, set the
thermostat to the desired frying temperature.

WARNING

shortening to the kettle.

The “Heating” pilot light will go out if the
high temperature limit control breaks the
circuit.

Note: If the high temperature limit control
does break the circuit, push the red reset
button on the back of the heater head.

8. Wait for the shortening to reach the desired
temperature.

WARNING

To avoid serious burns, when the fryer is

operating, do not any part of the fryer that

is in contact with hot shortening.

9. If you are frying cake or French donuts,
move the cutter into place over the fryer.
Refer to the cutter manual for complete
installation and operation instructions.

If you are frying yeast-raised donuts using a

feed table, load proofing cloths on the feed
table. Refer to the feed table manual for
complete installation and operation
instructions.

CAUTION

To avoid damaging the machine, do not

operate the conveyor until all the

shortening has melted.

10. Continue supplying shortening to the kettle
as required. Keep the kettle filled up to the
“Oil Level” marks on the side.

11. When you are done frying donuts, move the
on/off switch to the OFF position.

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

2 MN-1127EN 618L, 624, and 634 Fryers OM

2 Cleaning

For your safety, observe the following warnings
throughout the entire cleaning process.

WARNING

Thoroughly clean and dry the floor if

shortening, water, or other materials are

spilled. Materials spilled on the floor can

cause serious injury or loss of life.

WARNING

To avoid electrocuting yourself or

damaging the machine, never allow water,

steam, shortening, cleaning solution, or any

other liquid to enter the electrical box or

the heater head.

WARNING

To avoid being burned in an explosion,

never use any flammable materials for

cleaning.

Cleaning the Frying Screen

1. In a sink or a dishwasher, wash the frying
screen using warm water and mild detergent.
Do not use an abrasive cleaner or scraper.

2. Rinse the frying screen in clear water.

3. Dry the frying screen thoroughly, using a
soft cloth, before you use it again.

WARNING

Dry the frying screen thoroughly.

Moisture causes hot shortening to spatter,

which may cause serious injury.

4. Check the frying screen to make sure no
metal is flaking off of it. If the screen is
flaking, replace it immediately, so you do
not get metal particles in your product.

Cleaning the Kettle

There are four basic steps to cleaning the kettle:
removing the shortening, washing, rinsing, and
drying. You must perform all four steps and
perform them in the order listed.

Cleaning the Exterior

Removing the Shortening

Surfaces

1. Clean the polished and painted surfaces of
the fryer with a soft, damp cloth. Use a non­abrasive cleaner to remove any
discoloration.

2. Polish these surfaces with a soft, dry cloth.

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618L, 624, and 634 Fryers OM MN-1127EN 3

To avoid being burned or electrocuted,

disconnect the fryer from the power source

1. Disconnect the machine from the power
source.

2. Let the shortening cool to 100°F/38°C.

WARNING

before cleaning it.

3. Place a Belshaw Shortening Filter or a large
metal container under the drain valve of the
fryer.

WARNING

Do not use a plastic container. If the

shortening is not cool enough, the container

will melt, possibly causing you to be

burned, and causing shortening to get on

the floor.

4. Open the drain valve by turning the drain
valve extension knob on the side of the fryer
cabinet. Allow all the shortening to drain
into the Shortening Filter or metal container.

5. If you are using a metal container, watch it
to make sure the shortening does not
overflow. If the container becomes full,
close the drain valve, put another metal
container under the drain valve, and open
the drain valve again.

WARNING

Do not allow the shortening to overflow the

containers. Shortening will get on the

floor, and if the shortening is not cool

enough, you may be burned.

WARNING

8. Tilt the heater head assembly out of the fryer
and lock it in place.

9. Using a non-abrasive, non-metallic spatula,
scrape the sediment and any remaining
shortening through the drain valve.

10. Close the drain valve.

11. If your fryer has a Belshaw Shortening
Melter (FM) connected to it, install the plug
into the reservoir nipple.

Washing

1. Carefully pour hot water into the kettle, up
to the normal level of the shortening. Add
trisodium phosphate or another appropriate
cleaner.

2. Scrub the inside of the kettle. Do not use
any abrasive cleaners or scrapers.

WARNING

To avoid being burned, be very careful as

you work with hot cleaning solution. Never

put your hands in the solution. Wear

gloves and long sleeves in case any solution

splashes.

3. Allow the cleaning solution to cool to the
touch.

4. Place a large metal container under the drain
valve.

Thoroughly clean and dry the floor if

shortening is spilled. Shortening on the

floor can cause serious injury or loss of life.

6. If you have drained the shortening into a
metal container and you wish to re-use the
shortening, set the container of shortening
aside. Place another suitable container
under the drain valve.

7. Brush accumulated carbon from the heating
elements. Accumulated carbon causes
corrosion and poor heat recovery.

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4 MN-1127EN 618L, 624, and 634 Fryers OM

Do not use a plastic container. If the

cleaning solution is not cool enough, the

container will melt; possibly causing you to

be burned, and causing cleaning solution to

5. Open the drain valve and allow the cleaning
solution to drain into the container.

WARNING

get on the floor.

6. Watch the container to make sure the
cleaning solution does not overflow. If the
container becomes full, close the drain
valve, put another large metal container
under the drain valve, and open the drain
valve again.

WARNING

Do not allow the cleaning solution to

overflow the container. Cleaning solution

will get on the floor, and if the solution is

not cool enough, you may be burned.

7. When the draining is complete, close the
drain valve.

8. Carefully carry the container(s) to the sink
and slowly pour the solution into the sink.

WARNING

4. Open the drain valve and allow the water to
drain into the container.

5. Watch the container to make sure the water
does not overflow the container. If the
container becomes full, close the drain
valve, put another large metal container
under the drain valve, and open the drain
valve again.

WARNING

Do not allow the water to overflow the

container. Water will get on the floor, and
if the water is not cool enough, you may be

burned.

6. When the draining is complete, close the
drain valve.

7. Carefully carry the container(s) to the sink
and slowly pour the water into the sink.

Thoroughly clean and dry the floor if

cleaning solution is spilled. Liquid on the

floor can cause serious injury or loss of life.

Rinsing

1. Carefully pour clean, hot water into the
kettle, up to the normal level of the
shortening. If the cleaner you have used
requires that you add a neutralizer, do so
now.

2. Allow the water to sit for 5-10 minutes.
Then allow it to cool to the touch.

3. Place a large metal container under the drain
valve.

WARNING

Do not use a plastic container. If the water

is not cool enough, the container will melt,

possibly causing you to be burned, and

causing cleaning solution to get on the

floor.

WARNING

Thoroughly clean and dry the floor if water

is spilled. Water on the floor can cause

serious injury or loss of life.

Drying

Dry the inside of the kettle thoroughly, using a
soft cloth.

WARNING

Dry the kettle thoroughly. Moisture causes

hot shortening to spatter, which may cause

serious injury.

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

618L, 624, and 634 Fryers OM MN-1127EN 5

3 Donut-Making Helps

Tips on Making Quality
Cake Donuts

• Use the correct batter temperature.
In general, the correct batter temperature is

75°-80°F/24°-27°C. Check the mix
manufacturer’s instructions, as the
recommended temperature range may vary.

If the batter is too warm, the donuts will lack

volume and may “ring out” or be misshapen.
If the batter is too cold, the donuts will stay
under the shortening too long, fry too
slowly, and crack open or ball up. They
may also absorb excess shortening and lose
volume.

• Use the correct floor time.
A floor time of 10 minutes between mixing

and cutting allows the baking powder to
react with the water. This helps the donuts
attain the proper volume the proper level of
shortening penetration.

If the floor time exceeds 30 minutes, the mix

will gas off, the donuts will lose volume and
shape and will absorb too much shortening.

If the shortening is too cold, the donuts will
spread too rapidly, will form large rings, will
tend to crack open, will be too light in
appearance, and will absorb too much
shortening.

• Maintain the proper shortening level. We

recommend a distance of 1 1/4” between the
cutter and the shortening.

If the shortening is too deep, the donuts may

not turn over when they reach the turner,
causing them to cook unevenly.

If the shortening is too shallow (too far

below the cutter), the donuts may not drop
flat, may turn over while submerging and
surfacing, and may become irregular,
cracked, or rough-crusted.

• Ensure that the donuts absorb the right

amount of shortening.

Donuts should absorb 1-1/2 to 3 oz/42 to 85

g of shortening per dozen, depending on
their weight. You can achieve proper
absorption by following tips 1-3.

• If the donuts do not absorb enough

shortening, they will not keep well.

• Use the correct frying temperature.
The correct shortening temperature for

frying is 370°-380°F/188°-193°C.

If the shortening is too hot, the donuts will

fry too quickly on the outside and will lose
volume. The donuts may also become dense
inside.

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6 MN-1127EN 618L, 624, and 634 Fryers OM

If they absorb too much shortening, they

will lose volume and may become
misshapen. If this happens, follow tips 1-3,
mix the batter a little longer than usual, turn
the donuts as soon as they become golden
brown, and turn the donuts only once.

Calculating Correct Water
Temperature

The following is an example of how to calculate
the correct water temperature to use. You must

Cake Donuts Yeast-Raised Donuts

Room temperature 72 22.2 72 22.2

Dry mix temperature +70 +21.1 +70 +21.1

Total A

Desired batter temperature 75 23.9 80 26.7

x3

Total B

Total B

-Total A

Desired water temp. for cake donuts

Temperature increase during mixing (average: 30°F/17°C)

Desired water temperature for yeast-raised donuts

°F

142 43.3 142 43.3

225 71.7 240 80.1

225 71.7 240 80.1

-142

83°F

use your own room temperature, dry mix
temperature, desired batter temperature, and, if
you are making yeast-raised donuts, estimated
temperature increase during mixing.

x3 x3 x3

-43.3 -142 -43.3

Figure from above 98 36.8

°C

28.4°C

98 36.8

°F

↓

-30 -17

68°F

°C

↓

19.8°C

Ratios of Plunger Sizes to
Donut Weights

The weights given are for donuts without icings
or other toppings. They are provided for
reference only, as weights vary according to the
density of the batter.

Plunger Size Donut Weight per

Dozen

1” 5-8 oz/142-227 g
1 5/8” 14-17 oz/397-482 g
1 3/4” 16-20 oz/454-567 g
1 7/8” 19-24 oz/539-680 g

2" 22-27 oz/624-765 g

Temperature Conversion

To convert temperatures from Fahrenheit to
Celsius, subtract 32 from °F and divide the result
by 1.8. For example, 212°F-32/1.8 = 100°C.

To convert temperatures from Celsius to
Fahrenheit, multiply °C by 1.8 and add 32 to the
result. For example, (100°C x 1.8) + 32 = 212°F.

°F °C °F °C

55 12.8 340 171.1
60 15.6 345 173.9
65 18.3 350 176.7
70 21.2 355 179.4
75 23.9 360 182.2

80 26.7 365 185.0
325 162.8 370 187.8
330 165.6 375 190.6
335 168.3 380 193.3

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

618L, 624, and 634 Fryers OM MN-1127EN 7

Electric Fryer

618L, 624, and 634

Technical Supplement

Belshaw Bros., Inc.

814 44

Phone: [phone] • Fax: [phone]

th

Street NW, Suite 103

Auburn, WA 98001 USA

Email: [e-mail] • http://www.belshaw.com

If you accept the machine from the shipping
company, you are, in effect, saying that the
machine is in good condition, and you must
pay for the machine. Belshaw cannot pay for

shipping damage, because the freight company
has accepted the machine from Belshaw in good
condition, and is responsible for its safe delivery.
For your protection, inspect the machine to see
that no parts are bent, scratched, or otherwise
damaged. If any damage has occurred in
shipping, file a freight claim with the shipping
company immediately.

IMPORTANT

Keep this manual for future reference.

To unpack the fryer and transport it to the
workstation:

1. Use a fork lift to transport the shipping crate
to the work station.

2. Break down the shipping crate.

3. Remove all the packing materials from the
fryer. These include foam, tape, brown
paper, plastic, and white protective coating.

4. Position the fryer to allow sufficient space
on either end of the machine for any
equipment you plan to use with it.

EQUIPMENT RECORD

Please provide the information below when you correspond with us about your machine.
Purchased by _____________________________________________________________________
Installed by ______________________________________________________________________
Date of Installation ________________________________________________________________
Model number ___________________________________________________________________
Serial number

011108

MN-1128EN

Belshaw Bros., Inc.

814 44th Street NW, Suite 103

Auburn, WA 98001 USA

Phone: [phone] • Fax: [phone]

Email: [e-mail] • http://www.belshaw.com

Contents

Sections

1 Installation 1

Unpacking the Fryer 1
Initial Cleaning 1
Installing the Fryer 1
Moving the Fryer 2
Mounting the Drain Tray 2

2 Troubleshooting 4
3 Electrical Components 7

Testing the Continuity of the Toggle Switch 7
Testing the Continuity of the Thermostat 8

4 Appendix 9

Parts List Drawing Insert Page Insert

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

618L, 624, and 634 Fryers TS MN-1128EN iii

Preface

The 618L, 624, and 634 Electric Fryers are
designed to fry cake and yeast-raised donut
products. Each must be bolted to a flat, dry
floor. The operator should stand opposite the
heater head.

The operator must work safely at all times and
read this manual and follow its instructions and
warnings. A thorough understanding of how to
install, maintain, and safely operate the fryer will
prevent production delays and injuries.

Heed the following warnings and all other
warnings that appear in this manual:

• Make sure the machine is bolted

securely to the floor. Doing so will
prevent the machine from moving,
tipping, or falling, which could cause
serious injury.

• To avoid damaging the machine, never

use force to assemble, disassemble,
operate, clean, or maintain it.

• Never let water and hot shortening come

in contact with each other. Moisture
causes hot shortening to spatter, which
may cause serious burns.

• Do not overfill the kettle with

shortening. If shortening overflows the
kettle, it could cause serious burns or
could cause someone to slip on the floor
and be seriously injured.

• Hot shortening can cause serious burns.

Make sure that the system and the
shortening are cool before attempting
any cleaning, adjustment, disassembly,
or repair.

• To avoid electrocution or other injury,

unplug the machine before attempting
any cleaning, adjustment, disassembly,
or repair.

• Be careful never to get shortening,

water, or other materials on the floor. If
anything does get spilled on the floor,
mop it up immediately. Materials on the
floor can cause people to slip or fall,
resulting in serious injury or loss of life.

• To prevent unintentional startup and

possible fire, unplug the machine if there
is a local power outage. When the
power is restored, it is safe to plug the
machine in again.

• To avoid electrocution, make sure that

all electrical cords are not frayed or
cracked and that they do not pass
through any water or shortening.

• Make sure that all electrical cords are

routed so that no one will trip over them.

Belshaw Bros., Inc. • www.belshaw.com • Phone [phone] • Fax [phone]

iv MN-1128EN 618L, 624, and 634 Fryers TS

1 Installation

Unpacking the Fryer

1. Use a fork lift to transport the shipping crate
to the work station.

2. Break down the shipping crate.

3. Remove all the packing materials from the
fryer. These include foam, tape, brown
paper, plastic, and white protective coating.

4. Position the fryer to allow sufficient space
on either end of the machine for any
equipment you plan to use with it.

Initial Cleaning

Clean your fryer before using it. Wipe the inside
of the kettle with a soft, damp cloth. Dry the
kettle thoroughly.

WARNING

To avoid electrocuting yourself or
damaging the machine, never allow water,
steam, cleaning solution, or other liquid to
enter the heater head or the electrical box.

Installing the Fryer

1. Make sure the power requirements of the
machine, found on the data plate on the back
of the heater head assembly, match your
power source.

2. Using a fork lift or pallet jack, lift the fryer
cabinet and screw each leg in as far as it will
go.

3. Set the fryer cabinet on a flat, dry floor.

4. Level the fryer. Follow these steps:
a. Check to see if the fryer is level. To do

so, place a level across the top of the
fryer cabinet.

b. If the fryer is not level, lift the fryer

using a fork lift or pallet jack, and turn
the legs to adjust them.

c. Using the fork lift or pallet jack, lower

the fryer to the floor. Be sure that all the
legs rest on the floor when the fryer is
level.

5. Bolt the fryer to the floor. The foot of each
leg has two holes in it for this purpose.

WARNING

Never let water and hot shortening come in

contact with each other. Moisture causes

hot shortening to spatter, which may cause

serious injury. Prior to use, make sure the

kettle and any other parts you have washed

are dry.

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618L, 624, and 634 Fryers TS MN-1128EN 1

To avoid serious burns, other injury, or

death, make sure the fryer is securely

fastened to the floor so it will not tip or fall

9. Connect the fryer to a properly grounded
power source.

WARNING

over.

Moving the Fryer

If you ever want to move the fryer to a different
workstation, follow this procedure:

1. Turn off the fryer and disconnect it from the
power source.

2. Allow the machine and the shortening to
cool.

WARNING

Do not touch hot shortening. It can cause

serious burns.

3. Remove the shortening from the fryer as
explained in “Removing the Shortening” in
Section 3.

WARNING

Mounting the Drain Tray

If you ever want to mount the drain tray on the
opposite side of the fryer, follow the steps below.
You cannot move the drain tray if your fryer has
a Belshaw Shortening Melter (FM) mounted on
it.

1. Remove the two acorn nuts on the ends of
the drain tray hinge shaft.

2. Slide the drain tray hinge shaft out of the
drain tray mount brackets.

3. Lift off the drain tray.

4. Remove the bolts and washers that hold the
drain tray mount brackets in place. Remove
the mount brackets.

5. Tilt the heater head back and lock it in place.

6. Loosen the set screws in the drain valve
extension knob on the side of the cabinet.
Remove the knob.

To avoid burns, falls, other injury, or

death, never attempt to move the fryer

when it has shortening or other liquid in it.

WARNING

Thoroughly clean and dry the floor if

shortening is spilled. Materials on the floor

can cause people to slip or fall, resulting in

serious injury or loss of life.

4. Remove the bolts that secure the fryer to the
floor.

5. Using a fork lift, transport the machine to
the new workstation.

6. Level the fryer, bolt it to the floor, and
connect it to the power source, as explained
in “Installing the Fryer” above.

7. Inside the cabinet, there is a set collar on the
drain valve extension rod. Loosen the set
screw in the set collar. Slide the set collar
toward the drain valve. Remove the
extension rod and the bushing.

8. Remove the hole plug from the hole in the
opposite side of the cabinet and insert the
bushing in its place. Install the hole plug in
the hole where the bushing was.

9. Remove the kettle from the cabinet, turn it
180º, and put it back in the cabinet.

10. Install the extension rod and the drain valve
extension knob at the new location. To do
this, reverse the procedure outlined in steps
6 and 7.

11. Remove the two drain tray support rests that
are mounted on the outside of the cabinet.
Each support rest is held in place by two
hex-head machine screws, two hex nuts, two
internal tooth lock washers, and two flat
washers.

12. Install the drain tray support rests on the
opposite side of the cabinet.

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2 MN-1128EN 618L, 624, and 634 Fryers TS

13. Install the drain tray mount brackets
(removed in step 4) on the opposite side of
the fryer.

14. Put the drain tray in place, so its holes line
up with the holes in the mount brackets.

15. Slide the drain tray hinge shaft through the
holes in the mount brackets and the drain
tray.

16. Tighten the acorn nuts (removed in step 1)
on the ends of the drain tray hinge shaft.

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618L, 624, and 634 Fryers TS MN-1128EN 3

2 Troubleshooting

If you have a problem with your fryer that you
cannot solve, call your dealer or another
qualified technician.

If your dealer cannot help you, please call
Belshaw Bros. at [phone]. When you
call, please specify the following:

• The model name of the machine.

• The serial number of the machine.

• The voltage, phase, and cycle of the

machine.

CAUTION

If you perform repairs yourself or have

them performed by anyone other than a

service technician authorized by Belshaw

Bros., you do so at your own risk.

WARNING

Disconnect the machine from the power

source before disassembling, repairing, or

wiring.

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4 MN-1128EN 618L, 624, and 634 Fryers TS

THE FRYER WILL NOT TURN ON OR HEAT

Possible Causes What To Do

The on/off switch is not in the ON position. Move the on/off switch to the ON position. The

on/off switch is located inside the fryer cabinet, on
the right hand side.

The thermostat is not turned on. Turn the thermostat knob to a setting that is high

enough to make the “Heating” pilot light come on.

The high-temperature limit control switch has
been tripped.

The primary power distribution circuit breaker
has been tripped.

A fuse is blown. Replace the fuse.

Press the red reset button on the back of the heater
head.

WARNING

Before doing any of the following, turn off the
machine and allow the shortening to cool.

Flip the circuit breaker. The circuit breaker is
visible through an access cutout in the electrical box.
(The electrical box is inside the cabinet, in the back.)

THE HEATING ELEMENTS FAIL TO MAINTAIN THE PROPER
TEMPERATURE

Possible Causes What To Do

WARNING

The thermostat is out of adjustment. Re-calibrate the thermostat. See Appendix B,

The thermostat is defective. Replace the thermostat.

Sediment has accumulated around the
thermostat bulb.

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618L, 624, and 634 Fryers TS MN-1128EN 5

Before doing any of the following, turn off the
machine and allow the shortening to cool.

“Electrical Components.”

Remove the shortening from the fryer, as explained
in Section 3, “Cleaning.” Remove the sediment
from the thermostat bulb.

THE HEATING ELEMENTS WILL NOT HEAT

Possible Causes What To Do

The fryer’s circuit breaker has been tripped. Press the red reset button on the back of the heater

head.

The high-temperature limit control switch has
been tripped.

The contactor is defective. Replace the contactor.

A heating element is defective. Replace the defective heating element.

The high-temperature limit control is defective. Replace the high-temperature limit control.

The thermostat is out of adjustment. Re-calibrate the thermostat. See Appendix B,

The thermostat is defective. Replace the thermostat.

Press the red reset button on the back of the heater
head.

WARNING

Before doing any of the following, turn off the
machine and allow the shortening to cool.

“Electrical Components.”

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6 MN-1128EN 618L, 624, and 634 Fryers TS

3 Electrical Components

This appendix explains how to test the continuity
of electrical components in your fryer. These
include the toggle switch and the thermostat.

The appendix also contains a document by the
Robertshaw Controls Company, the maker of the
thermostat we use in the 618L, 624, and 634. It
explains how to check, adjust, and recalibrate the
thermostat.

Testing the Continuity of
the Toggle Switch

WARNING

To avoid the possibility of electric shock,

disconnect the machine from the power

source before testing.

1. Disconnect the machine from the power
source.

2. Disconnect the terminal wires from the
switch.

switch
terminals

toggle switch

+

battery
_

Figure 3-1. Toggle Switch Continuity Test.

3. Obtain a continuity tester or a volt-ohm
meter. If neither of these instruments is
available, make a continuity tester using a
battery and a bulb. See Figure B-1.

4. Connect the wires of the continuity tester to
the switch terminals, as shown in Figure B­1, and test the switch in the ON and OFF
positions. The switch should show
continuity only when in the ON position.

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618L, 624, and 634 Fryers TS MN-1128EN 7

Testing the Continuity of
the Thermostat

WARNING

To avoid the possibility of electric shock,

disconnect the machine from the power

source before testing.

1. Disconnect the machine from the power
supply.

2. Disconnect the terminal wires from the
thermostat.

3. Connect the continuity tester across the B
terminals indicated in Figure B-2. This set
of contacts should be closed whenever the
thermostat is on. To test, start with the
thermostat in the OFF position. Then turn
the thermostat up until you hear a distinct
click (at about the 175°F/79°C setting). At
this time, there should be continuity across
the B terminals.

setting of the thermostat until it does. Then
recalibrate the thermostat according to the
manufacturer’s instructions. If the indicator or
light will not go off at any setting or
recalibration, then the thermostat is defective.

“B” terminals

“A” terminals

Figure 3-2. Thermostat Terminals.

4. Connect the continuity tester across the A
terminals indicated in Figure B-2. Start with
the thermostat in the OFF position and turn
the thermostat up until you hear a distinct
click. If there is no continuity (the indicator
or light does not come on), proceed to
step 5.

5. With the continuity tester still connected,
turn the thermostat knob to OFF and remove
the knob. There is an adjusting screw in the
center of the knob stem. Turn it counter­clockwise until there is continuity. If there
is no continuity (the indicator or light does
not come on), then the thermostat is
defective. If there is continuity, proceed to
step 6.

6. Immerse the thermostat sensing bulb in a

pan of boiling water and set the thermostat at
about 212°F/100°C. The continuity tester’s
indicator or light should go off. If the indicator
or light does not go off, increase the temperature

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8 MN-1128EN 618L, 624, and 634 Fryers TS

4 Appendix

See Parts List Drawing Insert Page.

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618L, 624, and 634 Fryers TS MN-1128EN 9