Pitco Frialator 7-4WKS User manual

Category
Deep fryers
Type
User manual

This manual is also suitable for

Installation/Operation /Service/Parts Manual
for the KFC Multivat Gas Fryers
Models 7-2WKS, 7-3 WKS, 7-4WKS
7-3 WKS & 7-4 WKS With UFM Spacefighter Filter
IMPORTANT
Warning: Improper installation, adjustment,
service or maintenance can cause property
damage, injury or death.
Read this entire manual thoroughly prior to
installation, operation, maintenance or service of
this equipment.
For Your Safety: Do not store or use gasoline
or other flammable vapors or liquids in the
vicinity of this or any other appliance.
Warning: Gas leak procedures, obtained from
your gas supplier, should be posted in a
prominent location.
Installation
1
Installation
2
For your protection, review and complete these safety awareness items:
Gas
Ensure that the authorized installer complies with local codes
Use the proper fuel type and the correct size supply lines
Use a pipe joint compound suitable to propane gas in order to prevent gas leaks.
Electrical
Ensure that the electrician complies with local codes
Use the 3-prong plug on the fryer to provide proper grounding and effective protection from shocks
Always disconnect unit from the electrical supply before cleaning or servicing.
Fire
Both the fryer tank and the shortening may exceed 375°F (190°C)keep shortening away from
operators and their clothing
Avoid moving the unit until shortening has cooled
Always wear insulated, oil-proof gloves when cleaning and/or filtering the unit
Keep the fryer area clear, especially of combustibles like paper
Install fryer away from combustibles like wallboard
Ensure that your fire detection/alarm/extinction equipment and your first aid kit are ready for use.
Ventilation
Proper ventilation promotes correct burner operation
Inadequate ventilation may release a scentless, invisible, toxic gas: carbon monoxide
Keep the flue vent clear to prevent overheating and fire
Eliminate down drafts which may cause unit malfunction; should you have any questions, please contact
your local authorized service representative.
Stabilility
Always reconnect the restraining device after moving caster models, thus maintaining gas-line integrity
Relevel the unit with the provided mechanisms after movement for proper operation.
Warranty
Follow the installation instructions provided in this manual carefully
Ensure that operators learn and follow guidelines for safety, operation, filtering, and cleaning
Keep this manual handy for ready reference.
Table of Contents
Installation:
Safety 1-2
Table of Contents 3-5
System Overview 6
Table of Specifications/Requirements 6
Guide to Unpacking the New Fryer 7
Checking Your Order 7
Installation Procedure 7
Figure L-1: Installing Fryer Accessories 8
Gas Piping Capacity 9
Gas Leak Testing 9
Electrical/Grounding System 9
Fuel/Gas System 10
Fire Detection/Extinction System 10
Preliminary Cleaning of the Fryer 11
Filling the Fryer 11
Installation Adjustments 11
Figure L-2: Cover the Burner Tubes 11
Operation:
Fryer Operations 12
Computer Controller 12
Daily and Weekly Cleaning of the Fryer 12
Filtration 12
Recovery Test 12
Maintenance
Pitco Spacefighter Filter Module 13
The Fryer Filtration System 14
Operator Troubleshooting - Fryer 15-16
Operator Troubleshooting - Filter 17-18
Installation
3
Service:
Burner Manifold Pressure Adjustment 19
Main Burner Flame Adjustment 19
Pilot Burner Adjustment 19
Removing the Main Burner 20
Changing the Main Burner Orifice 20
Replacing the Heat Tube Baffles 20
Removing the Pilot Burner 20
Replacing the Pilot Orifice 21
Replacing the Limit Control 21
Troubleshooting:
Service Troubleshooting - Fryer 22-27
Service Troubleshooting - Filter 27-29
Photographs:
Key to Figure P-1 30
Figure P-1: KFC 7" Triple Fryer w/Controller 31
Key to Figure P-2 32
Figure P-2: Important Internal Parts 33
Key to Figure P-3 34
Figure P-3: Entrance Box, KFC 7-1 WKS Fryer 35
Key to Figure P-4 36
Figure P-4: Entrance Box, KFC 7-2 WKS Fryer 37
Key to Figure P-5 38
Figure P-5: Ignition Control Box 39
Key to Figure P-6 40
Figure P-6: Filter, Front View 41
Key to Figure P-7 42
Figure P-7: Filter Assembly 43
Key to Figure P-8 44
Figure P-8: Filter Pick-Up Assembly 45
Key to Figure P-9 46
Figure P-9: Filter, Interior Front 47
Installation
4
Parts Listings:
Fryers 48-49
Filters 49
Schematics:
KFC 7-3 & 7-4 with Filter N/A
KFC 7 Series Non-Filter N/A
KFC Single Fryer with Computer and EI N/A
UFM 240 VAC Option N/A
UFM 115 VAC Option N/A
UFM 208/230 VAC Option N/A
Installation
5
Installation
6
System Overview
The fryers and filter systems covered in this manual have been specially tailored by Pitco Frialator, Inc. for use in KFC stores. With
proper installation, operation, and maintenance, you will recieve many years of dependable operation.
This manual covers the models 7-2WKS, 7-3 WKS, and 7-4 WKS multivat gas fryers, as well as the 7-3WKS-UFM and 7-4WKS
UFM models. The WKS units require a portable filter unit, and the WKS-UFM models incorporate the Spacefighter built-in filter
system. UFM filter systems make filtration quick, easy and possible during peak periods, eliminating the traffic obstruction and
safety hazards of conventional filtration procedures.
All of the fryers are equipped with 16-gauge stainless steel tanks. In addition, all of the fryers have electronic ignition systems,
eliminating the need to light the pilot with a match. Another feature common to all of the fryers is the float switch, which cuts off
power to the heating system should the shortening be inadvertantly drained, preventing scorching of the shortening and the tank
itself.
These fryers are designed to work with the new generation of KFC proprietary FAST computer controllers. One computer can
control up to two fryers simultaneously. These computers are purchased separately; instructions for installing the computer controller
to the fryer are included in this manual.
Table of Specifications and Requirements
Model
7
-
7
-
3 WKS
7
-
7
-
3WKS/UFM
7
-
4WKS/UFM
Dimensions
Height. Overall 47" 47" 47" 47" 47"
Height. Work 35" 35" 35" 35" 35"
Unit Width 20.31" 30.47" 40.62" 30.47" 40.62"
Depth/Front to Back 33.32" 33.32 33.32" 33.32" 33.32"
Cooking Area/Tank 2-8 x 14 3-8 x 14 4-8 x14 3-8 x 14 4-8 x 14
Frying Depth 4" 4" 4" 4" 4"
Fat Vol./Lbs./Min. 25 25 25 25 25
Aisle Space/Min. 21" 21" 21" 25" 25"
Gas Supply Requirements
Hourly BTU Input 110.000 165.000 220.000 165.000 220.000
Pipe Size/NPT/Min. 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4
No. of Connections 1 1 1 1 1
Nat. LP Pressure/WC 7.0/12.0 7.0/12.0 7.0/12.0 7.0/12.0 7.0/12.0
Electrical Requirements
Volts/Amps 120V. 1A 120V, 1A 120V, 1A 120V. 8A 120V. 8A
Supply Cords 1-15A 1-15A 1-15A 1-15A 1-15A
Phase/Frequency 1.50/60 1. 50/60 1, 50/60 1. 50/60 1,50/60
Filter System
Filter Envelope - - - 14x15 14x15
Pump Rate/Clean - - - 5.0 GPM 5.6 GPM
Installation
7
Guide to Unpacking the New Fryer
Your 7-WKS series fryer will arrive in a single crate; if you ordered a Spacefighter UFM filter system, the filter unit will be
strapped to the top of the fryer crate. As you unpack:
Find the packing slip (in a plastic envelope on the outside of the crate); locate the Sales Order Number on the packing slip
When uncrating, keep the fryer's weight evenly distributed, and be careful not to strain the front or back casters and/or legs;
never pull on the flue vent
Inspect your fryer (and filter), inside and out: if any damage is detected, do not sign the bill of lading-report the damage to your
shipping representative immediately, as the shipper's liability has a 15-day limit
Note the unit's serial number on the plate inside the door
Retain all packing materials until all parts of your order, standard and optional, have been tallied using the checklist below
Locate your Pitco Frialator guarantee; complete it by filling in the serial number of your fryer and the date
Retain this document for future reference-store it in a safe placeDO NOT return it to Pitco Frialator.
Checking Your Order
Find the following with your Fryer Unit:
Fry Basket (1/fryer) Flue Heat
Deflector (1/fryer)
Find the following with your Filter Module:
Crumb Catch Basket
Fry Basket Hanger (1/fryer)
Fryer Crumb Scoop (1/fryer)
Channel Strip (1/pair of fryers).
14" x 15" Filter Bag Holder Ass'y
Filter Pan.
If any parts and/or accessories are missing, call the plant using our toll-free number: 1-800-258-3708.
Installation Procedure
It is required that you have a qualified service technician perform the installation of the fryer; please supply the technician with
this manual and have him/her follow the procedures given below.
Bring the fryer to the area in which it will be connected to utilities and where it will be operating
Connect gas piping to the fryer; refer to Specifications Table and the Fuel Gas System section of this manual for proper
pipe sizes
lf you are going to install a flexible hose with a quick-disconnect, be sure that the disconnect has adequate flow capacity for the
particular model fryer
g NOTE: If you are installing a flexible hose, you must install a fryer restraining loop, shorter than the gas line itselfrefer to the
Fuel Gas System section of this manual for further information
Make sure you have the heat deflector(s) (1/fryer) provided by Pitco Frialator; clip onto the fryer prior to positioning the unit
under the ventilation system (refer to Figure L-1)
Using a large, adjustable wrench or pliers, turn the large hex on the caster base to raise or lower each caster and level the
fryer.
Installation
8
Figure L-1: Installing Fryer Accessories.
Installation
9
Gas Piping Capacity
In order to achieve the degree of performance for which the fryer is designed, a well-planned and properly-sized gas supply
system is essential
Piping size should be appropriate to supply gas sufficient to the maximum demand of all appliances on the line without loss of
pressure at any of the equipment
Other criteria in determining gas piping size are the total BTU requirements of the equipment served and the length of piping
from the meter to the appliances
The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI
Z223.1-1988
Your local gas company should consult the National Fuel Gas CodeAppendix C, Table C-4 (for natural gas) and Table C-16
(for propane)for proper sizing and installation of gas piping
Also refer to the section of this manual covering Fuel/Gas Installation.
Gas Leak Testing
g NOTE: NEVER use an open flame to test for gas leaks
Before operating the fryer, test all fuel gas connections for leaks, using a solution of soap and water
If the gas-supply system is going to be tested at a pressure GREATER THAN 1/2 psig (3.45kPa), the fryer and its individual
shut-off valve must be disconnected from the supply line
If the gas-supply system is going to be tested at a pressure EQUAL TO OR LESS THAN 1/2 psig, the fryer's manual shut-off
valve must be closed during testing.
Electrical/Grounding System
North American electrical requirements: 120 VAC 60 Hz, 0.5 amp per fryer, 7 amps per filter system
International electrical requirements: 220 (or 240) VAC 50 Hz, 0.5 amp per fryer, 4.0 amps per filter system
The power cord with the straight-blade plug provides power for the filter module. The filter module plugs into a receptacle
located inside the fryer cabinet
The third prong on the fryer plug grounds the system for your protection against electrical shockinsert the plug directly into
a properly-grounded three-prong receptacle
gNOTE: NEVER remove the third, or grounding, prong from the plug
The fryer must be electrically grounded in accordance with local codes; if local codes do not apply, comply with National
Electrical Code, ANSI/NFPA 70-1990.
Installation
10
Fuel/Gas System
All gas service must comply with local codes; if local codes do not apply, install the fuel gas service in accordance with the
National Fuel Gas Code ANSI 7233.1-1988
In Canada install the fryer in accordance with CAN1-B149.1 and CAN1-B149.2 and/or local codes
Contact the local gas company to determine the correct size for the gas supply line; the fryer will not operate properly if
the gas line is too small
When making the gas supply connections, use a pipe joint compound resistant to liquified petroleum gases
Be certain that all gas-supply piping to the fryer allows for the proper minimum clearance at the side, rear and floor levelrefer
to the data plate inside the front door
Level the fryer in accordance with the instructions provided in this manual
Field-attached piping assemblies must not interfere with filter module travel or, if equippped with casters, the caster-swivel
radius
gNOTE: ALWAYS provide gas-supply connection lines that have been sized to be equivalent to the supply connection on the
fryer
g NOTE: NEVER use adaptors to make a smaller line fit, as an inadequate line size may not allow sufficient gas
volume for proper burner operation, resulting in poor fryer performance
Low gas volume/pressure can also cause "lazy" flames, which do not travel through the tank properly; this can cause high
temperatures on tank areas and create carbon monoxide
The fryer is equipped to work with one specific type of fuel gasthis information is given on the data plate inside the fryer door
gNOTE: NEVER supply the fryer with any kind of fuel other than the type indicated
Flexible hose quick-disconnect installation shall be made with a connector which complies with the "Standard for Connectors
for Moveable Gas Appliances", ANSI Z21.69-1987, and a quick-disconnect device which complies with the "Standard for
Quick-Disconnect Devices for Use with Gas Fuel", ANSI Z21.41-1978 and Addenda Z21.41a-1981 and Z21.41b-1983
The restraining device must be shorter than the gas connector, to prevent strain on the gas connector
A fryer restraining loop must be provided to limit the movement of the fryer without depending on the connector and the
quick-disconnect device, or its associated piping-to limit the fryer's movement
It is recommended that the attachment for the fryer restraining loop be installed in the rear center of the fryer cabinet (between
the two tanks) at approximately 30" above floor level
Use caution when drilling and installing attachment
Do not locate in such a manner that the mounting screws will perforate either of the fryer flues.
Fire Detection/Extinction System
gNOTE: We STRONGLY ADVISE you to install an approved fire detection and extinguishing system.
Exhaust temperatures from the fryer may run as high as 1200°F; therefore, select a fire-extinguishing system and a
sensing device that activates your system with this in mind, in order to reduce the possibility of false alarm.
Installation
11
Preliminary Cleaning of the Fryer
£Please refer to the KFC Standards Library for this procedure.
Filling the Fryer
gNOTE: ALWAYS wear insulated, oil-proof gloves when working with the fryer.
To fill the tank with cooking medium:
£Close the drain valve
£Check the computer probe/high-limit bulb clamp to ensure that screws are tight
gNOTE: NEVER melt solid shortening in the fryer, which will scorch the shortening. Melt it in pot on separate
stove prior to filling the fryer.
£Fill the tank with liquid and solid shortening to the OIL LEVEL line marked on the back
gNOTE: ALWAYS be sure that the burner tubes are covered before lighting the burners (see Figure L-1).
Installation Adjustments
£Have these adjustments performed by qualified personnel
£Get the following tools: Manometer or low-pressure gauge, digital thermometer or temperature probe
£Check the computer probe/high-limit bulb clamp to ensure that screws are tight
£Perform the pilot level adjustment (described in this manual)
£Check the main burner manifold operating pressure
£Check the main burner flame adjustment.
£Procedures to follow in performing the checks listed above are provided in this manual.
Figure L-2: Cover the Burner Tubes.
Operation
12
Fryer Operation
£Remove any flammable material from fryer area
£Check the gas supply: see that the fryer gas line is properly connected...
£Turn on the building gas supply, if necessary
£Turn on the ventilation hood
£Check for the proper shortening level in each fryer
£Tum on the manual gas knob in the fryer
£Make sure that the computer controller is on, and press the on switch
£The main burners will light and the computer will control the fryer
£Should the burners fail to light, turn the power switch OFF
£Wait 5 minutes before attempting to restart the fryerthis will allow any excess gas to dissipate.
Computer Controller
£For operating instructions, please refer to the KFC Standards Library regarding the computer controller.
Daily and Weekly Cleaning of the Fryer
£Refer to the KFC Standards Library for instructions regarding the correct cleaning procedures for the fryers.
Filtration
£Refer to the KFC Standards Library for the correct filtering procedures.
£Make sure that all filter system quick-disconnect fittings are completely connected and that at least one return or circulation
valve is open before starting pump
£When cleaning filter system parts, make sure to clean filter pickup screen (inside Item #8 on filter diagram).
Recovery Test
£Perform this test monthly to confirm that the fryer is heating efficiently-inefficient heating will result in improperly cooked
food product
£Use a watch with a second hand to time from the moment the display reads 275°F (135°C)...
£...until the temperature reaches 300°F (149°C)
£Note the amount of time necessary for the fryer to reach that temperature
£Compare the time with the correct recovery range (1 minute)
£If the time is higher than 1 minute and 30 seconds, contact maintenance.
Maintenance
13
Pitco Spacefighter Filter Module
Features:
£Stores neatly under fryer when not in use
£Allows for quick filtration, even under busy conditions
£Heater system to liquify hardened shortening.
Warnings:
gAlways use insulated, oil-proof gloves when performing filter operations: pans of system can get hot enough to cause bums.
Part #: Part Name: Part Function:
1 Power Supply Cord Plugs into fryer receptacle to provide power for filter operation.
2 Circuit Breaker Generally left ON. Will trip if overload occurs, i.e. pump is turned on but no
system valves are open. To reset, find and correct cause of trip. Turn power
switch (5) OFF. Push circuit breaker OFF, then return it to ON. Normal
operation will resume.
3 Return Connector Quickly disconnects filter module from fryer oil piping. Allows easy access
to filter pick up for cleaning.
4 Pump Motor Thermal Overload Protects motor from high temperatures. Will trip only when pump is
extremely hot. To reset, allow to cool and find cause of overheat (see
Troubleshooting), turn power switch (5) OFF, remove access cap (4), push
red button through access hole.
5 Pump/Heating Switch Turns pump on or activates internal heater to soften solidified shortening
before pumping. If filtration is to be done in the morning, start heaters at the
same time you start the fryeronly necessary for solid shortening.
6 Heat Indicator Light Lights to indicate that the heaters are operating.
7 Filter Assy Quick-Disconnect Separates filter pick-up ass'y from piping for renewing filter envelope. Pull
back on collar, pull pick-up ass'y away from piping.
8 Pick-Up Tube Connects filter envelope ass'y to piping. Incorporates a strainer to protect
filter pump from grit in the event of envelope failure. Rinse pick-up tube
thoroughly each time filter envelope is changed.
9 Crumb Catch Basket Catches biggest pieces of sediment to extend envelope usefulness. Clips over
front edge of pan. Special design reduces splashing oil.
10 Filter Pan Holds oil from the fry tank.
Maintenance
14
The Fryer Filtration System
Item #: Item Name: Function:
1 On/Off Switch Turns fryer on and off
2 Heating Indicator Lights when heat is on
3 Oil Return Valve Directs filtered oil to proper fry kettle
4 Filter Return Connector Allows filter unit to be removed for cleaning
5 Drain Valve Opens valve to drain shortening into filter
6 Gas Shutoff Valve Stops gas flow if unit is off for long period
7 Filter Power Supply Provides power to operate filter unit
8 Circulation Valve Rushes debris from drain system.
Maintenance
15
Operator Troubleshooting - Fryer
The following procedures are preliminary troubleshooting procedures applicable to equipment operators. They outline
some of the more common problems encountered in equipment operation, by checking these items before requesting
field service by a service technician, you may avoid unnecessary and costly service calls.
Problem Cause Solution
Computer display reads PROB.
a. Temperature sensing probe RT1, (RT2), open
or shorted.
a. Consult a qualified service
technician. Fryer can run on
auxiliary thermostat until repairs
can be undertaken.
Computer display reads HI; alarm is heard. a. Temperature is greater than 40°F above set-
point.
a. Turn power to fryer OFF. Turn
gas valve knob to OFF. Allow fryer
to cool- Determine cause of over
temperature. If necessary, consult a
qualified service technician.
Neither computer nor fryer power controls
will come on.
a. Fryer power cord plug not plugged in. a. Plug fryer into appropriate
receptacle.
b. Ventilation hood not on. b. Turn ventilation hood on.
c. Fuse F1 open. c. Replace with proper fuse value:
if fuse blows again, call
maintenance.
Fryer heating light isn't lit: computer is on. a. No heat called for by computer. a. Normal operation.
b. Heat switch is OFF. b. Turn heat switch ON.
c. Fuse F3 is open. c. Replace fuse. NOTE: An open
fuse often indicates some fault in
the fryer's wiring. It may be
necessary to locate the fault to
restore operation.
d. Consult a qualified service technician. d. Consult a qualified service
technician.
Heat light is on. Computer is on. Fryer will
not heat.
a. Gas is not turned on.
a. Check that the fryer's gas knob is
in the ON position; check the gas
quick-disconnect (if used); check
the building's gas supply.
b. Air has been trapped in fryer piping from
disconnecting and reconnecting to gas line.
b. Unit will purge itself of air.
Allow 15-30 minutes extra heat-up
time.
c. Food crumbs are stuck in float switch. c. Remove all food particles from
float to assure free travel.
Maintenance
16
Heat light is on. Computer is on. Fryer will
not heat (Cont).
d. Solid shortening is packed around float
switch; float ball cannot float.
d. Liquefy shortening in stock pot
before filling fry tank.
Pilot and burners will not light, no sparking
at pilot igniter. Fryer heating light is lit.
Computer is on.
a. Air in gas line; ignition system locked out. a. Turn fryer off, then on. Fryer
will purge itself; allow unit to run
for 15-30 minutes.
NOTE: If ignition system repeatedly locks out, call maintenance.
b. Food crumbs are stuck in float switch. b. Remove all food particles from
float to assure free travel.
Pilot and main burners will not ignite. Spark
is present at pilot igniter.
a. Gas supply off. a. Check that all upstream valves
in gas supply piping are open.
b. Fryer manual gas valve OFF. b. Turn gas valve knob ON: if
necessary, call maintenance.
Main burners will not light. Pilot burner
lights and goes out.
a. Gas supply system failure. a. Call maintenance.
Burner flames will not enter heat tubes. a. Down-draft on fryer's flue opening. a. Protect flue opening from
downdrafts. breezes, or air flows
from blowers.
b. Ventilation hood not operating properly. b. Correct ventilation hood
malfunction. If necessary, call
maintenance.
c. Fryers flue is obstructed or blocked. c. Remove obstruction or flue
blockage. If necessary, call
maintenance.
Fryer temperature recovery is too slow. a. Excessive updraft on the fryer flue. a. Look for flames lifting off of
burner face. Reduce exhaust
blower speed or locate it at a
greater distance from the fryer. If
necessary, call maintenance.
b. Excessive downdraft on the fryer flue. b. Locate cause of draftdivert air
current.
c. Carbon buildup on heat tubes. c. Clean fry tank and change
shortening using procedure
described in the KFC standard
library: call maintenance.
Maintenance
17
Operator Troubleshooting - Filter
UFM Spacefighter Filter Only
Problem Cause Solution
Pump switch on, no pumping. a. Filter circuit breaker is tripped. 1. Turn filter power switch off.
2. Correct cause of tripping.
3. Reset filter circuit breaker.
b. Filter or fryer not receiving power. 1. Plug filter into fryer.
2. Check that fryer is plugged into
115 VAC.
3. Check that building panel circuit
breaker is on.
c. Filter pickup not connected or missing. 1. Check that pickup connector is
fully engaged.
d. Solidified shortening has plugged internal
lines of filter.
1. Use HEAT to liquify solids:
allow 5-15 minutes.
e. Filter motor has overheated. 1. Allow motor to cool. resets
thermal overload on motor.
2. Call maintenance.
Filter pumps slowly. a. Filter pickup connector not engaged. 1. Check for complete connector
engagement.
b. Filter is clogged. 1. Install new filter.
c. Pickup screen clogged. 1. Clean pickup screen. Do not
operate with ripped filter bag.
2. Call maintenance.
Heaters in filter will not heat. Power switch
set for HEAT. HEAT light not on.
a. No 120VAC power to filter. 1. Be sure filter/fryer are
connected to 120VAC power.
Check that proper building circuit
is not turned off.
b. Filter circuit breaker is tripped. 1. Reset breaker: locate and correct
cause of trip before using.
Maintenance
18
Heaters in filter will not heat. Power switch
set for HEAT. HEAT light not on (Cont).
b. Filter circuit breaker is tripped (Cont). 2. Call maintenance.
Heaters in filter will not heat. Power switch
set for HEAT. HEAT light is on.
a. Not enough time has been allowed for heater
to work.
1. Allow 1/2 hour for heaters to
soften hardened shortening.
2. Call maintenance.
Filter circuit breaker keeps tripping. a. Filter not properly connected to fryer. 1. Check that filter to fryer quick-
disconnect is tightly connected.
b. No oil valves open on fryer. 1.
Make certain that the desired
oil flow valve is opened before
starting pump.
c. Filter pump lines are clogged with
hardened shortening.
1. Soften shortening with filter
heaters.
d. Filter to fryer disconnect has become
clogged.
1. Clean quick disconnect fitting.
2. Call maintenance.
Filter motor thermal overload trips. a. Pump operated without at least 1 system
valve open. This typically occurs after
consecutive filtering.
a. Make certain that the desired oil
flow valve is opened before
starting pump. The thermal
overload is performing normally
to protect the pump from
unnecessary damage.
b. Filter not properly reconnected to fryer. b. Check that filter to fryer quick
disconnect is tightly connected.
c.Filter to fryer disconnect has become
clogged.
c. Clean quick disconnect fitting.
d. Call maintenance.
Service
19
Burner Manifold Pressure Adjustment
£The burner manifold operating pressure should be as specified for the fryer's fuel gas on the data plate inside the fryer's door.
Properly-installed gas supply systems will deliver sufficient gas pressure to maintain the specified manifold pressure
£Turn the fryer power switch to OFF, and turn the manual gas valve knob to OFF
£Remove the 1/8" pipe plug from front of burner manifold
£Connect an accurate pressure gauge or manometer to the burner manifold pressure tap
£Start the fryer following normal operating procedure
£lf the manifold pressure is other than that specified on the data plate (4.0" WC natural gas, 10.0" WC propane), adjust
the pressure regulator on gas valve as follows
£Remove the screw cap on the regulator and, using a suitable screwdriver, rotate the adjustment screw clockwise to increase
pressure, counterclockwise to decrease pressure, until the specified pressure is obtained
£Reinstall the regulator screw cap
£Turn on all appliances connected to the same gas supply as the fryer; manifold pressure should not fall significantly under
these conditions
£Significant loss of pressure indicates inadequate supply construction and will impair the performance of all appliances during
peak usage
£Press the power switch to OFF position, and turn the manual gas valve knob to OFF
£Remove the manometer fitting from the pressure tap and reinstall the 1/8 pipe plug in manifold, gas tight
£Relight the fryer and check the manifold plug for gas leaks.
Main Burner Flame Adjustment
£Adjust the main burner flame by using the air collars located at the lower portion of the burner
£Loosen the set screw, securing the air collar to the orifice fitting
£Raise or lower the air collar to provide a soft, blue flame with well-defined inner cones
£Tighten the set screw to hold the air collar in the proper position
£Flames should enter the heat tube without touching its outside rim
£Flame should not "lift off of the burner face (indicates excessive air flow or gas pressure)
£Yellow tips should not be seen on the flames (indicates insufficient combustion air).
Pilot Burner Adjustment
£Adjust the pilot burner using the pilot adjustment screw (the slotted pilot adjustment screw cap is located below the pilot
tubing fitting on the gas valve)
£Remove the adjustment cap and gasket (do not lose the gasket)
£Using an appropriate screwdriver, turn the pilot adjustment screw to provide the proper flame (turning the screw
counterclockwise increases pilot flame; turning it clockwise decreases pilot flame)
£The pilot flame should completely surround the flame sensor
£After proper adjustment is obtained, reinstall the adjustment screw cap and gasket, and test for gas leaks.
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Pitco Frialator 7-4WKS User manual

Category
Deep fryers
Type
User manual
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