AutoFry AFI-5 Service Manual
Technical Service Manual
Phone: 508-653-0082
Fax: 508-653-1736
MOTION
TECHNOLOGY, INC.
LIMITED WARRANTY
1. Nature of Warranty
This equipment is warranted to be free of manufacturing
defects in workmanship and materials for one (1) full year
beginning from the date of original retail purchase and
subject to the limitations set forth below. The controls
package consisting of the main circuit board and keypad
are warranted for three (3) years. Any part found to be
defective during the warranty period will be replaced with
new or rebuilt replacement parts free of charge by Motion
Technology, Inc. (MTI). Shipping charges are me
responsibility of the purchaser. Service labor is included for
a period of one (1) full year beginning from me date of
original retail purchase when performed by an authorized
MTI service company or designated agent based on straight
time rates for work performed during normal working
hours. This labor coverage is limited to a fifty (SO) mile
radius (each way) and/or 1 hours travel time of a customers
location. Any and all other service travel charges will be
the responsibility of the customer.
2. Scope of the Warranty
This Warranty is extended to the original purchaser for
products purchased and retained in the 50 states of me
U.S.A. and the District of Columbia. This Warranty shall
not be effective unless the equipment was purchased from a
dealer or other person authorized by MTI to sell its
equipment.
The attached Warranty registration card must be fully
completed and mailed within ten (10) days-of receipt to
assure the validity of this limited Warranty.
4. How to Obtain Service
Notification of a defect in the material or workmanship of
the equipment, shall be to the MTI Factory Service
Manager at me number shown below or me dealer from
whom you purchased the equipment. We want you to be a
satisfied customer. If a problem does come up that cannot
be resolved to your satisfaction, please let us know. Write
to Service Manager, Motion Technology, Inc., 6 Huron
Drive, Natick, MA 01760-1315. Please be sure to include
the Model Number, Serial Number, and the date of
original purchase.
5. Exclusion of Incidental or
Consequential Damage
Repair or replacement under this Warranty is the
purchasers sole and exclusive remedy. Neither MTI
nor the dealer from whom you are purchasing this
equipment will be responsible for any and all
incidental or consequential damages, resulting from
the use of the equipment or from breach of any express
or implied warranty on this equipment. These
warranties are in lieu of all other warranties, express
or implied, including, but not limited to, the implied
warranties of merchantability or fitness for a
particular purpose.
3. Exclusions from Coverage of the
Warranty
This Warranty does not cover any damage to the equipment
resulting from accident, misuse, abuse or negligence,
failure to follow operating, cleaning and periodic
maintenance instructions, mishandling, alteration, failure
to install in strict conformity with local fire and building
codes and regulations, ordinary wear and tear resulting
from use, failure to change filters using only manufacturers'
supplied at the recommended intervals, or if the installation
does not comply with set-up arid installation instructions.
The equipment shall not have been previously altered,
repaired or serviced by anyone other than a service facility
authorized by MTI to render such service
6. Legal Rights of Warranty
Retain mis Warranty. It gives the purchaser specific legal
rights. The purchaser may also have other rights which
vary from state to state. MTI suggests that the dealer's
dated bill of sale be ratained as evidence of the date of
purchase. Some states do not allow the exclusion or
limitation of incidental or consequential damages, or allow
limitations on how long an implied Warranty lasts, so the
above limitations or exclusions may not apply to all
purchasers.
Technical Service/Support: (888) 664-6640
ELECTRIC FRYER MODEL MTI-5
FEATURES:
Integral Ventless Hood
Fully-Enclosed
Automated Cooking Process
Programmable Controls
ANSUL
Warranty: 1 Year Parts/Labor and
3 Years Electronic Controls Package
9
Fire-Suppression System
SPECIFICATIONS:
240 AC Volts Single-Phase
17.5 AMPS @ 4.2 kW Heater Element
6' Power Cord w/NEMA 6-20 Plug
2 Gallon Oil Capacity
20 Lb. French Fries/Hour (Frozen to Done*)
Clearances: Sides = 2" Back = 2" Top = 24"
Construction: 1 B Gauge Stainless Steel
Shipping Weight: 140 Lb.
Optional Heat Lamp: 110 ACV 4.6 AMPS
* based on a three minute french fry cook time.
800-348-2976
Get Fried at www.autofry.com
AUTOFRY
ELECTRIC FRYER MODEL MTI-10
— The lender in fully enclosed rentless frying technology —
800-348-2976
Get Fried at www.autofry.com
AUTOFRY
ELECTRIC FRYER MODEL FFG-10
— The leader in fully enclosed rentless frying technology —
800-348-2976
Get Fried at www.autofry.com
AUTOFRY
Electric Fryer Model MTI-40E
800-348-2976
GET Fried at www.autofry.com
Motion Technology, Inc. PH: (508) 653-0082 FX: (508) 653-1736
AUTOFRY
Gas Fryer Model MTI-40G*
*Gas Must Vent To The Outside
FEATURES:
Integral Ventless Hood
Fully-Enclosed
Independent Fry Vats
Dual Basket/Automated Food Delivery
Programmable Controls
Built-in Oil Filtration/Disposal System
ANSUL® Fire-Suppression System
Stainless Steel Construction
Warranty: 1 Year Parts/Labor and
3 Years Electronics Controls Package
SPECIFICATIONS:
130,OOBTU/Hr. Total
120 ACV 15 Amp. Required
120 Volt 4.5 Amp. Oil Filtration System
50 Lb. Oil Capacity
10% Cold Zone
60 Lb. French Fries/Hour (Frozen to Done*)
Shipping Weight: 400 Lb.
Clearances: Sides = 2" Back = 4" Top = 24"
Class "B" Gas Vent Required ( Consult Local Codes]
Available for natural gas or propane
* based on a three minute french fry cook time.
800-348-2976
Get Fried at wwuu.autofry.com
Motion Technology, Inc. PH: [508] 553-0082 FX: [508] 653-1736
Motion Technology, Inc. FFG-10 MTI-10 REV 002 1/00
Model Name FFG-10 MTI-10 MTI-10
Voltage 208 Volt - 240 Volt 208 Volt - 240 Volt 208 Volt* -240 Volt
Wattage 3750 ( N/A for 240 Volt) 3750 both 208 & 240 4160 (208)& 4800 (240)
Amperage 18.03 (208) & 15.63 (240) 18.03 (208) & 15.63(240) 20 amps
Hz 50/60 50/60 50/60
Phase 1 1 1
Plug Configuration NEMA6-20 6-30 (208) & 6-20 (240) NEMA 6-30
Serial Numbers 1500-A through 4936-A 4890-A through 6553-10 6554-10& Up
Thermistor Style RTD RTD "K" Type Thermocouple
Controller Style Milwaukee (10079) Milwaukee (10079) NCC(10079K)
Note
*208 Volt, 4160 Watt Special Order
Listings ETL, NSF, CSA UL, NSF,CSA UL, NSF, CSA
Changes No Longer Manufactured Using Ansul Fire System 3 Amp Fuse on 2nd side of Transformer
Serial Number Ranges 4936-A Last 4890-10 7197-10
Changes
Serial Number Ranges
Changes
Serial Number Ranges
Changes
Serial Number Ranges
MTI-10 UL Listing
4890-10
Watlow RTD Probes
5966-10
Class CC Fuse
5475-10
Motion Technology, Inc AFI-50MTI-5 Rev 002 1/00
Model Name AFI-5 MTI-5 MTI-5 (Far East Export Modified)
Voltage 120 Volt 240 Volt 200 Volt
Wattage 1725 4200 3000
Amperage 14.375 17.5 15
Hz 50/60 50/60 50/60
Phase 1 1 1
Plug Configuration NEMA15-5 NEMA6-20 NEMA 6-20
Serial Numbers Up to 1999-5 2000-5 & Up 2000-5 & Up
Thermistor Style "K" Thermocouple "K" Thermocouple "K" Thermocouple
Controller Style NCC Self Service NCC(10079K) NCC(10079K)
Note Export Only Replaces AFI-5 Replaces AFI-5
Listings UL,NSF,CSA,CE UL, NSF, CSA, CA UL, NSF, CSA, CE
Changes
Serial Numbers Range
Removed external On/Off Switch
2097-5
Motion Technology, Inc MTI-40 MTI-40E Rev 002 1/00
Model Name MTI-401PH MTI-40 3PH MTI-40E 1PH MTI-40E 3PH
Voltage 240 Volt 240 Volt 240 Volt 240 Volt
Wattage 12000 12000 16000 16000
Amperage 50 28.9 66.67 38.54
Hz 50/60 50/60 50/60 50/60
Phase 1 3 1 3
Plug Configuration Hard Wired NEMA 15-50 Hard Wired NEMA 15-50
Serial Numbers 1000-40 through 1065-40 1000-40 through 1065-40 1111-40 and Up 1111-40 and Up
Thermistor Style RTD RTD "K" Type Thermocouple "K" Type Thermocouple
Serial Numbers 1066-40 through 1110-40 1066-40 through 1110-40
Thermistor Style "K" Type Thermocouple "K" Type Thermocouple
Controler Style Milwaukee (10079) Milwaukee (10079) NCC (10079K) NCC (10079K)
Serial Numbers 1000-40 throughl 065-40 1000-40 through 1065-40
Controler Style NCC(10079K) NCC 10079K)
Serial Numbers 1066-40 through 1110-40 1066-40 through 1110-40
Note Integral Oil Filtration Syst. Integral Oil Filtration Syst. Removable Oil Filtration Removable Oil Filtration
Listings UL, NSF, CSA UL, NSF,CSA UL,NSF,CSA UL,NSF,CSA
Changes
Serial Number Range
Changes
Serial Number Range
Changes
Serial Number Range
Changes
Serial Number Range
2" Ball Valves 2" Ball Valves
1111-40 1111-40
Three Blowers Three Blowers
1111-40 Thru 1141-40 1111-40 Thru 1141-40
Single Blower Single Blower
1142-40 1142-40
Dual Vat Dual Vat
1111-40 1111-40
Changes Motor Numbers Motor Number Motor Number Motor Number
40042 (R.S)&10042 (L.S.) 40042 (R.S)& 10042 (L.S)
40042R (R.S) & 40042L
40042R (R.S.) & 40042L (L..S.)
Serial Number Range 1110-40 and Lower 1110-40 and Lower 1111-40 and Up 1111-40 and Up
AUTOFRY Models FFG-10 & MTI-10 Safety Circuit
Figure 1 - Safety Circuit Overview
The safety circuit is comprised of 8 separate switches that are wired in series. They
terminate at the circuit board 10079 at terminal M4 positions 8 & 9 and circuit board 10079K
at J3. Should any of these switches open the MDR (Mercury Displacement Relay) coil will
de-energize and the display at the keypad will go blank or display Sft.
The exception to this is as follows,
If, after the cook cycle has started, one of the safeties opens, the AUTOFRY will continue the
cook cycle. At the completion of the cook cycle the AUTOFRY will de-energize the MDR coil
and shut off.
The AUTOFRY cannot be re-started until the open safety circuit condition is corrected.
However, if the oil temperature is at or above 150° F the fan will continue to run.
There are three basic switch types utilized in this circuit,
1. Plunger style momentary switches (part no. 10028-S)
• For all the filters, the front door, the stack cover and the filter cover plate
2. Diaphramtype air flow switch.(X06313)
• To monitor the airflow.
3. Normally open Air pressure switch (no part no.)
• To monitor the tank pressure at the fire system.
MTI Form SAFT10 Rev. 002 1/99
AUTOFRY Models FFG-10 & MTI-10 Safety Circuit
Access to all but the front door safety, that is located behind the keypad, will be made from the rear of
the AUTOFRY.
Trouble Shooting:
1. Press the ON key, the fan starts and runs for 10-12 second then shuts off and there is never a
display at the key pad or the display reads Sft.
• Check that the front door is closed and making contact with the safety.
• Check for a worn door gasket or a loose door latch.
• Ensure that all filters are installed and that the filter cover plate is installed.
• Excessive grease build-up at one of the safety switches.
• Inspect the tank pressure gauge at the fire system sight window. It needs to be in or slightly
over the charged zone.
• Look for any obstructions at the stack cover.
• Check that the stack cover louvers are open. The fan should be visible through the louvers.
• Airflow switch out of adjustment.
• Loose connections at any of the safety switches.
2. The AUTOFRY operates; however, it shuts off just after a cook cycle, fan continues to run.
• Loose connection to a safety switch.
• Airflow switch out of adjustment.
3. The AUTOFRY shuts off by its self at no specific time, fan continues to run, Sft at display.
• Loose connection to a safety switch.
• Airflow switch out of adjustment.
4. The AUTOFRY was just cleaned and now it does not start up, the fan does not operate or the display
reads Sft.
• Debris caught in fan blades, air-flow switch does not close.
• Loose or no connection to main power.
AUTOFRY Models FFG-10 & MTI-10 Safety Circuit
Inspecting, adjusting and testing the safety circuit:
Prior to accessing the rear chamber, it is a good idea to test the physical operation of each of the
plunger style switches to ensure that they are in good working order.
Figure 2 - Front view of plunger switches
Ensure that all components are installed and are making a solid contact with there respective
switches.
NOTE:
The fan must be operating in order to check the airflow switch. Prior to removing the rear access
cover do the following to start the fan,
• Unplug the heater plug and the RTD plug or Thermocouple Plug from the bottom of the
heater box.
• Press the ON button at the keypad.
• When the display shows 417 or Prb press the OFF key. At this time the wait light should
be blinking and the fan should be operating.
Remove the rear access panel.
Check that all the wire terminals are securely fastened to the safety switches.
Check for any breaks in the circuit.
MTI Form SAFT10 Rev. 002 1/99 3
AUTOFRY Models FFG-10 & MTI-10 Safety Circuit
Check that the termination at M4 or J3 on the circuit board is secure and that the red and black
wires are screwed in tightly to the 2-pin plug. With all components installed in the AUTOFRY and
the front door closed perform a continuity test across all the safety switches.
NOTE:
There may be three loose wires at the fire system; these wires are for the building egress
pressure switch. Some state codes require that the fryer be linked to the building fire alarm, this
switch is for those applications only and need not be connected to the AUTOFRY safety circuit.
The Model MTI-5 safety circuit functions the same as the safety system for the models FFG10 and MTI-10. The only notable differences are as follows...
The front door
safety switch is
located at the
lower right hand
comer of the front
door opening.
Access to this
switch is made
through the
access panel at
the left side of the
AUTOFRY.
The other difference involves the removable top panel and fire damper assembly and it's
safety switch.
The illustration shown at
the left shows a top view
of the MTI-5 with the top
panel removed.
Highlighted is the
removable fire damper.
To the left of the damper
is the safety switch. The
damper must be installed
in order for this switch to
close and complete the
safety circuit. If the
damper assembly should
close the airflow
switch will open the
safety circuit deenergizing the heater
circuit and displaying
Sft on the keypad
display.
NOTE: Removal of the top panel also aids in working on other related components.
Adjusting the MPL air switch
In order to adjust the air switch you need to:
1. Unplug the AUTOFRY from the wall
2. Turn the unit around to gain access to the rear panel
3. Remove the rear access panel
4. You will see the air switch; the switch is black in color and round (about the size of
a hockey puck). You will notice either a clear or gray air hose attached to it).
5. Remove the sealant fro the center of the air switch
CAUTION!! You must remove all of the sealant from the center of the
switch, so you do not strip out the adjusting screw.
6. Using a 1/8" Alien wrench turn the adjusting screw 2 complete turns to the left,
which is in a clockwise direction.
7. Install the rear cover.
8. Plug in the AUTOFRY and turn it on.
See the attached diagram for reference,
Remove sealant from allen set screw
AUTOFRY Models FFG-10 & MTI-10 Safety Circuit
Additional Notes and Information:
Depending on the model and date of manufacture the air flow switch may not look
like or be located in the same position as the one shown in figure 5. Some models
incorporated a small black box type air switch that is located on the component board,
(follow the clear plastic hose to locate this switch). This style switch is adjustable;
however, the technician will need to use a 1/16" flat screwdriver to adjust the sensitivity on
this switch.
If the AUTOFRY has been stored in bellow zero temperatures for any extended
period of time (1 week or more) the liquid in the fire system cylinder may have "Jelled".
This condition will affect the pressure switch on the system tank. Allow the system to thaw
at room temperature until the switch responds.
If the installation of the AUTOFRY is at high altitude there may not be sufficient air
pressure to activate the airflow switch. It may be necessary to adjust the switch to its
lowest setting.
If the AUTOFRY is exposed to extreme high temperature an over-heating at the
circuit board may result. This condition could result in intermittent shutdowns simulating a
safety circuit fault. Allow adequate ventilation at the rear of the AUTOFRY.
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit Basket Motor Circuit Overview:
Figure 1 - Basket Motor Circuit for Circuit Boards with an RTD
Figure 1-A Basket Motor Circuit for Circuit Boards with Thermocouple (Polarity Reversed)
AUTO FRY Models FFG-10 and MTI-10 Basket Motor Circuit The basket motor circuit is
comprised of the following components,
2. Wire Assemblies as follows
• Motor Harness (part no. 8-10)
• NC switch normally closed connection white with red stripe (part no. 12-10)
• NO switch common connection black (part no. 18-10)
• NO switch normally open connection red (part no. 17.10) • Circuit board (part no. 10079 or
10079K)
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
The motor assembly is secured to the motor mount within the electrical chamber with 2
ea. 1/4-20 x 5/8" bolts and lock washers. The motor shaft is fitted with a Teflon seal. The
shaft then protrudes through a clearance hole into the cook chamber where the basket
cam is then attached to the shaft and held secure with a 1/4-28 x 5/8" bolt and a small
drop of medium thread locker.
Details on removal and testing the basket motor are covered in these
instructions.
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
The basket motor functions to lift and lower the wire food basket through it's "Cycle". This
cycle consists of 7 positions,
1. Ready
2. Cook
3. Drain
4. Dispense
5. Shake
6. 2nd Dispense
7. Return to ready
These positions are controlled by the switch cam, micro switches and through programs
set in the EPROM of the microprocessor.
At the start of a cycle the motor will rotate counter clockwise from the ready position to
the cook position.
This is a timed rotation set in program # 14 At the completion of the cook cycle
the basket motor will rotate clockwise to the Drain position.
This is a timed rotation set in program # 10
The drain time is set at 12 seconds in program #11. At the completion of the drain
time the basket motor will rotate clockwise to the dispense position.
This is controlled when the notch in the switch cam contacts the normally
open switch.
The basket motor will rotate counter clockwise from the dispense position to the shake
position, hold there for a second then return to the dispense position. There is no sellable
programming for this position in the circuit board with the RTD it is in program # 19 for
the circuit board with a thermocouple. At the completion of the 2nd dispense position the
motor will rotate clockwise until the notch in the switch cam contacts the normally closed
switch.
If the basket motor fails to rotate or if it fails to return to the ready position with in 10
seconds the display at the keypad will show the error code ofA04.
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
Trouble shooting:
1. No motor rotation and an A04 at the display.
• Loose or no connection at the positive terminal of the motor (white wire with a black stripe) or,
at the negative terminal of the motor (solid white wire).
• Locked rotor at the motor.
• Striped gears.
• Burned traces at the circuit board due to over rotation.
• Frozen or burned relay at the circuit board
2. Motor rotates as follows,
• Right to cook
• Left to drain
• Left to dispense
• Right to shake
• Left to dispense
• Right past the ready position continuing for 10 seconds prior to
stopping. An A04 at the display with an audible tone. One or all of the
following is the cause.
• Loose or no connection at the normally closed switch (black and or red wires)
• Loose or no connection at the M4 terminal positions 1 & 2. 9 black and or red wires)
3. Motor rotates as follows.
Note: There will not be an A04 error in this case
• Right to cook.
• Right to 45° then stops
• Relays will "Click"
• Right to ready position.
A loose or no connection at the normally open switch (solid white wire or the white wire with the
red stripe) causes this
4. The motor functions however the cam does not rotate or the basket does not move.
• Loose basket cam.
• Worn motor shaft.
• Basket not properly installed.
5. Basket motor rotates however it is very slow.
• Transformer secondary side voltage drop
• Incorrect fuses at the Primary side fuse holder.
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
Replacing the Basket Motor Assembly (part no. 10042)
1. Disconnect the AUTOFRY from main power.
2. Open the main door and remove the following components.
• The wire food basket.
• The heater box assembly
• The oil pot.
3. With a 7/16" wrench loosen and remove the basket cam from the motor shaft.
• Inspect the "D" shaped hole for signs of wear and replace the cam if necessary.
4. Remove the rear access panel from the AUTOFRY
5. With a 7/16" open end wrench or small 1/4" drive ratchet and 7/16"socket loosen and remove the 2
motor mounting bolts and lock washers.
6. Disconnect all wires.
• If helpful tag each wire.
1. Prior to installing a new motor clean all areas of any oil traces.
2. Inspect the replacement motor.
• The replacement motor has been tested at the factory,
however, it should be inspected for any damage incurred in
shipping.
• Ensure that the Teflon seal is present, if not use the seal from
the old motor.
3. Inspect all wiring and replace if necessary.
4. Inspect the circuit board for any burned traces (see figure 4).
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
• At the backside of the circuit board inspect the traces
just above the M2 or J10 terminal block. If these traces
are burned replace the circuit board (see figure 4).
• Attach all wires to their appropriate switches and
motor terminals.
1. Place the new motor into position on the motor
mount bracket and loosely secure with the 1/4 -20
bolts and lock washers.
2. Attach the basket cam to the motor shaft at the
interior of the cook chamber.
• Place a small drop of medium strength thread locker
to the 1/4 -28 bolt prior to installation.
• There is a "D" shaped hole in the
basket cam that will fit over the motor shaft, it may be necessary to de-bur the hole
in order for it to fit over the shaft.
• Ensure that the bolt makes full contact on the motor shaft to prevent
the cam from slipping.
3. Tighten the motor mounting bolts to a hand tight fit with a 7/16" wrench of socket.
AUTOFRY Models FFG-10 and MTI-10 Basket Motor Circuit
Testing the motor:
VERY IMPORTANT!
Test the motor without the basket in place.
If the switch cam notch is not in position at the normally closed switch and the AUTOFRY is turned on
the motor will rotate 360° until it contacts the switch. If the basket is in place it will cause damage to the
motor and or the circuit board.
Dry testing the AUTOFRY equipped with an RTD ONLY. You can not dry test an AUTOFRY with a
thermocouple unless you have a thermocouple simulator.
1. At the circuit board locate and remove the small black
jumper cap from position PR2 located 1/4" below the
beeper (see figure 5).
• Removing this cap will send a false temperature to the
controller allowing the AUTOFRY to operate with out
heating the oil.
2. Install the safety circuit jumper into positions 8 & 9 at
M4 at the circuit board.
3. Install the oil pot and the heater box.
4. Plug the RTD plug into the heater box.
VERY IMPORTANT!
Do Not plug the heater plug in at this time. Do Not install the
wire food basket.
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