Pitco Frialator E7, E7B, E12, E14, E14B Part Manual

...
SERVICE SECTION
L20-055 R12 (06/11)
There's Always Something Cooking!
Service, Parts, and Schematics
For Electric Fryers With Options
Including Options, Built-In and UFM (Spacefighter)
Filter Systems
Covering Models
E7, E7B, E12, E14, E14B, E14X, E18, & E18B
A BLODGETT Company
(800) 258-3708 • (603) 225-6684 • FAX (603) 225-8497
MTS # PF05-01 Pitco Frialator #L20-055 Revision 11 Rev. Date 07/18/94
L20-055 R12 (06/11)
TO THE PURCHASER, OWNER AND STORE MANAGER
Please review these warnings prior to posting them in a prominent location for reference.
WARNING
DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
WARNING
Improper installation, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before installing or servicing this appliance.
WARNING
Installation, maintenance and repairs should be performed by a Pitco Authorized Service and Parts (ASAP) company technician or other qualified personnel. Installation, maintenance or repairs by unauthorized and unqualified personnel will void the warranty.
WARNING
Installation and all connections must be made according to national and local regulations and codes in force.
WARNING
A country approved all pole circuit breaker with a minimum open contact gap of 3mm must be used for proper installation. (CE countries)
WARNING
During the warranty period if a customer elects to use a non-original part or modifies an original part purchased from Pitco and/or its Authorized Service and Parts (ASAP) companies, this warranty will be void. In addition, Pitco and its affiliates will not be liable for any claims, damages or expenses incurred by the customer which arises directly or indirectly, in whole or in part, due to the installation of any modified part and/or received from an unauthorized service center.
WARNING
This appliance, when installed, must be electrically grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.2, as applicable.
WARNING
DO NOT alter or remove structural material on the appliance to facilitate storage or for any other reason.
WARNING
This appliance is intended for professional use only and should be operated by fully trained and qualified personnel.
WARNING
DO NOT use the electrical cord as a leash to move the appliance. Series injury and appliance damage can occur.
WARNING
If the supplied power cord or receptacle is damaged, it must be replaced by a Pitco Authorized Service and Parts (ASAP) company technician, or a similarly qualified person in order to avoid a hazard.
WARNING
The power supply must be disconnected before servicing, maintaining or cleaning this appliance.
The appliance is NOT jet stream approved. DO NOT clean the appliance with a water jet.
DO NOT attempt to move this appliance or transfer hot liquids from one container to another when the unit is at operating temperature or filled with hot liquids. Serious personal injury could result if skin comes in contact with the hot surfaces or liquids.
DO NOT sit or stand on this appliance. The appliance’s top panel, filter pan, filter carriage, pan cover is not a step. Serious injury could result from slipping, falling or contact with hot liquids.
NEVER use the appliance as a step for cleaning or accessing the ventilation hood. Serious injury could result from slips, trips or from contacting hot liquids.
The filter pan should be dry and free of water droplets prior to use. Serious injury could result from hot steam vapors when hot oil/shortening mixes with water.
DO NOT overfill filter pan with hot oil/shortening. Do not leave appliance unattended while draining or refilling with oil/shortening. Over filling the appliance can cause serious injuries and damage the appliance.
The contents of the crumb catch and/or filter pan of any filter system must be emptied into a fireproof container at the end of each day. Some food particles can spontaneously combust if left soaking in certain types of oil or shortening.
Completely shut the appliance down when the oil/shortening is being drained from the appliance. This will prevent the appliance from heating up during the draining and filling process. Serious injury and appliance damage can occur.
This appliance is intended for indoor use only.
DO NOT operate appliance unless all panels and access covers are attached correctly.
It is recommended that this appliance be inspected by a qualified service technician for proper performance and operation on a yearly basis
This appliance is designed to operate on a specific voltage. This information can be found on the data plate located on the rear of the appliance
.
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING WARNING
WARNING
WARNING
2
L20-303 Rev 1. (05/11)
Table of Contents (Service)
Section Title Page
Table of Contents (Service)..........................................................................................................i-ii
List of Figures .......................................................................................................................... ii
Chapter 4: Service .....................................................................................................................4-1
4.1 REPLACEMENT PROCEDURES ........................................................................... 4-1
4.1.1 Heating Element Removal and Replacement ...................................................... 4-1
4.1.2 Backup Thermostat Replacement - Computer Models Only............................... 4-2
4.1.3 Calibrating the Thermostat - Computer Models Only.........................................4-3
4.2 TESTING CONTACTORS (RELAYS)....................................................................4-3
4.3 TESTING HEATING ELEMENTS ..........................................................................4-4
4.4 TESTING THE TEMPERATURE SETTING POTENTIOMETERS...................... 4-4
4.5 TESTING THE TEMPERATURE CONTROL MODULES ...................................4-4
4.6 TESTING THE TEMPERATURE PROBE.............................................................. 4-5
4.7 TESTING THE HEATING ELEMENT INTERLOCK............................................ 4-5
4.8 TROUBLESHOOTING FRYERS WITHOUT COMPUTERS................................ 4-7
4.9 TROUBLESHOOTING FRYERS WITH COMPUTERS...................................... 4-14
4.10 TROUBLESHOOTING BASKET LIFT PROBLEMS ..........................................4-16
4.11 TROUBLESHOOTING BUILT-IN FILTER UNITS............................................. 4-18
4.12 TROUBLESHOOTING UFM FILTER UNITS ..................................................... 4-21
Chapter 5: Parts .......................................................................................................................5-1
Fig. No.
5-1 Outside View ............................................................................................................. 5-2
5-2 Entrance Box ............................................................................................................. 5-3
5-3 Inside Fryer Tank Components ................................................................................. 5-4
5-4 Frame-Cabinet / Electrical Assemblies With Components ....................................... 5-7
5-5 UFM Filter, Frame/Electrical Assembly ...................................................................5-9
5-6 UFM Pilter, Pick-Up/Pan Assembly ....................................................................... 5-11
5-7 UFM Filter, Motor / Return Assembly.................................................................... 5-13
5-8 Built-In Filter Pan With Components...................................................................... 5-15
5-9 Filter Piping With Components............................................................................... 5-17
5-10 Built-In Filter With Accessories.............................................................................. 5-19
ALPHABETICAL PART LIST .............................................................................. 5-20
NUMERICAL PART LIST..................................................................................... 5-24
i
Table of Contents (Service) Cont.
Section Title Page
Chapter 6: Schematics.............................................................................................................. 6-1
List of Tables and Figures
Table No. Title Page
5-1 Frame-Cabinet / Electrical Assemblies With Components ....................................... 5-6
5-2 UFM Filter, Frame/Electrical Assembly ...................................................................5-8
5-3 UFM Pilter, Pick-Up/Pan Assembly ....................................................................... 5-10
5-4 UFM Filter, Motor / Return Assembly.................................................................... 5-12
5-5 Built-In Filter Pan With Components...................................................................... 5-14
5-6 Built-In Filter Piping With Components ................................................................. 5-16
5-7 Built-In Filter With Accessories.............................................................................. 5-18
Figure No. Title Page
5-1 Outside View ............................................................................................................. 5-2
5-2 Entrance Box ............................................................................................................. 5-3
5-3 Inside Fryer Tank Components ................................................................................. 5-4
5-4 Frame-Cabinet / Electrical Assemblies With Components ....................................... 5-7
5-5 UFM Filter, Frame/Electrical Assembly ...................................................................5-9
5-6 UFM Pilter, Pick-Up/Pan Assembly ....................................................................... 5-11
5-7 UFM Filter, Motor / Return Assembly.................................................................... 5-13
5-8 Built-In Filter Pan With Components...................................................................... 5-15
5-9 Filter Piping With Components............................................................................... 5-17
5-10 Built-In Filter With Accessories.............................................................................. 5-19
ii
Chapter 4: Service
This chapter provides the qualified technician with the replacement and troubleshooting procedures necessary to service the Pitco fryer.
4.1 REPLACEMENT PROCEDURES
These procedures are provided to the qualified technician as a guide to removal and replacement of various fryer components. If a test is required to verify component operation after installation, it will be referenced.
WARNING
To prevent burns, always ensure the fryer is completely SHUT DOWN and COOLED down before working on the fryer. Do not break any fryer gas connections while the unit is connected to a gas supply line.
WARNING
The power supply must be disconnected before servicing or cleaning the appliance.
4.1.1 Heating Element Removal and Replacement
Replacing a heating element is a complex and time consuming procedure. Ensure that you have tested the heating elements to determine that the element is bad and not something else.
a. Move the fryer out to gain access to the rear panels. Remove the upper small access cover
and the large lower access cover.
b. The terminal block for the heating elements is located behind the lower access plate. Tag
the connections with wire markers for easy reinstallation, and remove the wires. The temperature probe wires are not connected through the terminal board. To disconnect the temperature probe, remove the small access plate on top of the pivot box (plate opposite High Limit switch). The connector for the probe is inside the pivot box. Disconnect the probe at this connector and gently pull the wire out of the pivot box.
c. Disconnect the spring assembly from the pivot box by raising the elements and holding
them in place with a board across the tank. Do not use the element bracket to hold the elements up.
d. Next remove the pivot box assembly by removing the screws that attach the pivot box
hinges to the fryer. The heating elements will need to be raised to gain access to the screw heads. Support the heating element assembly before removing the screws. Removing the hinge screws frees the heating element assembly from the fryer.
4-1
e. Once free of the fryer, set the element assembly aside. Remove the access plate on the
back of the pivot box to gain access to the heating element connectors. Disconnect the wire for the defective element.
f. Loosen the nuts that attach the heating element to the pivot box. Slide the heating element
out of the pivot box.
g. Install the new heating element by reversing this procedure.
4.1.2 Backup Thermostat Replacement - Computer Models Only
Only fryers that have computer controls have this backup thermostat. If your fryer does not have a computer but does have a thermostat behind the door, this is a thermostat behind the door model. That means that the knob behind the door controls the solid state temperature module behind the fryer's control panel (front bezel). The backup thermostat includes the temperature adjustment knob, temperature sensor inside the fryer tank, and connecting capillary tubing. The high limit controls also has a temperature sensor in the fryer tank, so ensure you are removing the correct temperature sensor.
CAUTION
Thermostat capillary tubing is very delicate. Be VERY CAREFUL when working with the capillary tubing. If the tubing is kinked or broken the thermostat is no longer usable.
a. Drain the oil from the fryer. The thermostat probe (heat sensor) is clamped to the heating
element assembly inside the tank. Unscrew and remove the two screws in the thermostat probe clamp.
b. Remove the thermostat probe from the clamp and straighten the capillary tubing.
Unscrew the small hex nut inside the cabinet under the tank for the thermostat control.
c. Unscrew the large connector nut from the fryer tank and pull the thermostat probe and
capillary tubes through the opening.
d. Pull the knob off of the thermostat. Remove the entrance box cover to gain access to the
thermostat.
e. Mark and disconnect he wires from the thermostat terminals.
f. Remove the two screws that hold the thermostat to the inside of the entrance box. Remove
the defective thermostat control unit from the fryer.
g. Install the new thermostat in reverse order. Remember to be careful with the capillary
tubes.
4-2
h. Use pipe joint compound on the large fitting before installing to prevent oil leakage. DO
NOT use joint compound on the small nut.
i. Perform the calibration procedures detailed in section 1.5.3.
4.1.3 Calibrating the Thermostat - Computer Models Only
To calibrate this thermostat the dial must be removed from the shaft. The adjustment for the thermostat is inside the dial shaft.
a. To calibrate the thermostat you must first cause the computer to switch control to the
backup thermostat. To do this, remove the computer from the front panel and disconnect the connector from the computer. The transfer relay will de-energize and temperature control will shift to the backup thermostat.
b. Place the tip of a high accuracy thermometer in the shortening approximately 1" above
the temperature sensor.
c. Set the thermostat dial to 325°F and turn the fryer on.
d. Remove the thermostat dial by pulling the knob straight out. DO NOT rotate the dial.
e. Hold the outside of the shaft so it does not move. Use the tip of a small, flat tip screw
driver to scrape away the sealing compound from the adjustment screw. Turn the adjustment screw clockwise to lower the temperature setting, and counterclockwise to raise the temperature. One quarter turn will change the temperature approximately 25°F.
f. Turn the adjustment until the heating elements turn off at 325°F. Replace the knob and
allow the fryer to cycle 4 to 6 times. Check the temperature of the thermometer against the thermostat dial, if it is greater than 5°F repeat the calibration procedure.
g. When the calibration is correct, remove the thermometer.
4.2 TESTING CONTACTORS (RELAYS)
Contactors and relays use a control voltage to energize the electro magnet and close a set of contacts. The control voltage is applied to a solenoid-type coil. When measuring a coil's resistance, ensure that you have disconnected it from the fryer's electrical system. This will ensure that you are measuring the coil's resistance and not a portion of the fryer's wiring. When measured with an OHM meter these coils should have a very low resistance, less than 100 ohms. Measure each of the contactors that are suspect. If any relay or contactor indicates an open circuit or high amount of resistance, replace the coil.
4-3
4.3 TESTING HEATING ELEMENTS
To check a heating element first place the OFF-ON-START switch in OFF. Check the elements by performing the following:
a. The terminal block that connects the heating elements to the fryer is located behind the
large rear access panel. Move the fryer out and remove the access panel.
b. Using an OHM meter check continuity from one end of the element to the other. The
reading should be very low (a few ohms). If the element indicates an open circuit, replace the element.
c. Next check from the hot side of the element to ground. It should be infinite, if it is not
replace the element.
4.4 TESTING THE TEMPERATURE SETTING POTENTIOMETERS
The temperature setting potentiometer is a variable resistors. To test the potentiometer ensure that the OFF-ON-START switch is OFF and perform the following:
a. For thermostat knobs mounted on the front of the fryer, remove the front bezel to gain
access to the back of the potentiometer. If the fryer has the thermostat knob mounted behind the door (in the entrance box), remove the entrance box cover to gain access to the back of the potentiometer.
b. Disconnect P10 from J10.
c. Connect an ohm-meter to pin 3 (yellow wire) and pin 1 (violet wire) and rotate the
temperature control knob. The resistance should vary from 0 to 900 ohms.
b. Connect the ohm-meter between pin 3 (yellow wire) and pin 5 (orange wire) and rotate
the knob. The resistance should again vary from 0 to 900 ohms. If the resistance is not within the ranges specified replace the temperature setting potentiometer.
4.5 TESTING THE TEMPERATURE CONTROL MODULES
The temperature control module receives 24 VAC when the OFF-ON-START switch is ON. To test the temperature control module perform the following:
a. The temperature control module is located behind the front bezel. Remove the two screws
that hold the bezel in place and move out of the way.
b. Place the OFF-ON-START switch in ON and the Melt switch in OFF. This will apply 24
VAC to pin 1 (black wire) with pin 3 as the common (white wire) of the temperature control module.
4-4
c. Set the temperature setting potentiometer to a temperature above the shortening's current
temperature. This will cause the temperature control module to close and pass 24 VAC to pin 12 (gray wire) of the control module.
d. Check the temperature probe as described in section 4.6.
e. If the temperature probe test passes and there is not 24 VDC present on pin 12 of the control
module, replace the temperature control module.
4.6 TESTING THE TEMPERATURE PROBE
WARNING
All power supplies must be disconnected before servicing the appliances. Some appliances have more than one power supply. Make sure they are ALL disconnected.
The temperature probe is a special type of resistor called a thermistor. Check the temperature probe by performing the following:
a. Gain access to the temperature probe connection by removing the front panel. Disconnect
P10 and check the resistance of the probe at pins 2 & 4 of P10.
b. Place the OFF-ON-START switch in OFF. Use an ohm-meter to measure the resistance
across the probe. It should be about 100K ohms at room temperature (72°F, 22°C). If the probe indicates an open or more than 200 ohms away from 100K ohms, replace the probe.
c. Re-install the probe wires and turn on the fryer. Start the fryer and raise the shortening
temperature to normal cooking temperature, approximately 350°F.
d. Unplug the temperature probe and measure the resistance again. It should read approxi-
mately 923.8 ohms ±10 ohms. If the resistance is different by more than 10 ohms, replace the temperature probe.
4.7 TESTING THE HEATING ELEMENT INTERLOCK
The heating elements are protected from accidental over heating, due to lifting them out of the oil while unit is ON, by an interlock limit switch. The switch is located on the right side (opposite the High Limit switch) of the heating element pivot box.
a. This test requires that you gain access to the back of the interlock switch. Remove the four
screws from the small access plate on the top, right of the pivot box. Gently move the wiring harness to the side to expose the wiring terminal of the interlock switch.
4-5
b. Connect an ohm-meter across the switch terminals to measure the resistance across the limit
switch connection.
c. When the elements are down in the tank the interlock switch is closed and the resistance
across the switch will be zero.
d. Lift the element rack up while continuing to measure the resistance across the switch. The
rack only needs to be lifted a short distance to open the switch. A click should be heard when the switch opens. The resistance will go up significantly when the switch opens. The resistance will not be infinite unless the switch wires are disconnected. If there is any doubt about the resistance, remove the wires and check the resistance. With the wires removed the resistance will be infinite.
4-6
4.8 TROUBLESHOOTING FRYERS WITHOUT COMPUTERS
p
Fryer does no t
operate properly!
Is the fryer
filled with oil?
YES
Does the
POWER ON
indicator light?
YES
NO
NO
Refer to Chapter 2 for
proper filling and
operation of the fryer.
Is the Fryer
connected to building
power su pp l y?
NO
Connect fryer to building
power su pp l y as de sc r i bed i n
Chapter 1.
YES
Is the service
panel circuit
breaker tripped?
NO
Is the fire protection tie in system closed?
YES
YES
NO
Determine reason for
tripping. Reset the
circuit breaker.
Ensure that the fire
protection system is closed
or that the fire protection
oint is closed.
tie in
Is the control fuse
(F1) blown?
YES
Are the heating
elements down and is
the interlock
YES
working?
YES
Test the ON/OFF/TEST Switch
A
and repl ace i f ne ce s sa r y
NO
NO
Determine the cause for
blowing. Replace the fuse.
(Refer to 3.6)
Ensure the the heating elemen t s are down. C h eck the interlock switch per 4. 7
and replace if necessary.
4-7
A
p
Does the fr y er
heat up?
YES
NO
Does the
HEATI NG l i ght
come on?
Are the heating
elements down and i s
the interlock
working?
Is the High Li mit
switch open?
YES
YES
NO
NO
Ensure that the heating elements ar e dow n. C heck the inter loc k s wi t ch per 4.7
and replace if neces s ary .
YES
Reset swit ch and
check tri p se t t i ng.
Test the temperature
probe as described in 4.6.
Is the temper at ure pr obe
defective?
NO
Test t he
temperature set
potentiom et er as descri bed in
4.4. Is t he potentionmeter defective?
YES
Replace the temperature
probe.
YES
Replace the
potentiometer
NO
Test the
NO
B
C
temperat ur e c ont rol
module as descri bed in
4.5. I s t he m odule defective?
NO
Verify continuity of the leads
which provide 24 VAC pow er ,
and the potent iom eter and
robe signals to t he m odule.
YES
Replace the
module.
4-8
B
C
YES
Does HEATING
light go out when
thermostat is set above
oil temperature?
YES
NO
Test the temperature
probe as described in 4.6.
Is the temperature probe
defective?
NO
Test the temperature
set potentiometer
as described in 4.4. Is
the potentionmeter
defective?
YES
Replace the temperature
probe.
YES
Are heating
element fuses
blown?
NO
Check heating
elements as
described in 4.3.
Are they good?
YES
Check contactors K7 thru K10. Check
wiring for loose connections. Check
continuity between the grey lead on
each contactor and the grey lead to the
HEATING light .
YES
Replace the fuse(s)
and determine the
cause for blowing.
NO
Replace the
defective heating
elements
Replace the
NO
Test the
temperature control
module as described
in 4.5. Is the module
defective?
NO
Verify continuity of the leads
which provide 24 VAC power,
and the potentiometer and probe
D
signals to the module.
potentiometer.
YES
Replace the module.
4-9
D
NO
Does HIGH LI MIT
switch t r i p dur i ng normal
operation?
NO
YES
Is solid
shortening being
melted?
NO
Is short ening
level too low?
NO
Is High Lim it
capillary tube
touching the heat i ng
elements?
NO
YES
YES
Ensure that short ening is packed
tightly ar ound heating elements !
Make sure t hat t he M el t Cyc le
switch is set to MELT ON.
Ensure that shortening level is f i ll ed
to the level mark.
YES
Gently m ove the capillar y t ube
away from the heating elem ent s
Are the heat i ng elements dir ty?
NO
Is the t her mostat
set too high?
Test the
Replace the
module.
E
YES
temperature contr ol module as described in 4.5. I s the module
NO
defective?
YES
YES
NO
Perfor m a through cleaning of
the fry er as des cribed in 3.2.
Check the setting and
calibrati on of t he thermostat.
If the High Li m it s w it c h can not be reset of cont i nues to trip earl y replace the sw it c h.
4-10
E
Does the
shortening get t oo
hot?
NO
Does the
shortening not get
hot enough?
YES
YES
Is the shortening
level too low?
NO
Is the t her mostat
set too high?
NO
Test t he temperat ur e pr obe as
described in 4. 6. Repl ace
temperat ure probe if def ec t iv e.
Is the thermost at
set too l ow?
YES
YES
Ensure that shortening level is f i ll ed
to the level mark.
Check the setting and
calibrati on of t he thermostat.
YES
Check the set ting and
calibration of the thermost at .
NO
Check heating
elements as
described in 4. 3. Are
NO
Test t he t emperatur e pr obe as
F
they all good?
YES
described in 4. 6. Replace the temperature probe if defective.
NO
Replace the def ective
heating element s
4-11
F
Does the f ryer
heat inter mi t t ent ly ?
NO
Does the f ryer
heat slowly ?
YES
Is the fryer
connected t o t he
proper vol tage su pply and
is it connected
properly?
NO
Fryer i s function i ng
NO
YES
properly.
Test the tem per a t ure
probe as described in 4. 6.
Is the temper ature pr obe
defective?
NO
Test the tem per a t ure set pot ent i o m et e r a s
described in 4. 4. Is the
potentionmeter defecti ve?
NO
Test the
temper at ure contr ol
module as desc ribed in
4.5. I s t he modu le defective?
NO
YES
YES
Replace the temperature
probe.
YES
Replace t he
potentiometer.
Replace the
tempera t ure contr ol
module.
YES
Are the heat ing
elements c l ean?
YES
G
Correct t he inst all at ion.
NO
Perfor m a weekly cl eanin g
of the fr yer ( 3.2 )
Check heati ng el em e nt s as
described in 4.3. Rep lac e
heating elements if necessar y.
4-12
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