MF90 Series Portable
Installation & Operation Manual
Filtration Systems
MF90-80, -80LP & -110 Models
PARTS LIST
INCLUDED
"U" & "AU" CONFIGURATIONS
Dean, a member of the Commercial Food Equipment Service Association, recommends using
CFESA Certified Technicians.
24-Hour Service Hotline 1-800-
551-8633
*8195934*
12/2017
Please read all sections of this manual and retain for future reference.
Installation, maintenance, and repairs should be performed by your Frymaster/Dean
Factory Authorized Servicer.
WARNING
Safe and satisfactory operation of your equipment depends on its proper installation.
Installation MUST conform to local codes, or in the absence of local codes, with the
latest edition of the National Electric Code, N.F.P.A. 70.
WARNING
ELECTRICAL GROUNDING INSTRUCTIONS
This filter is equipped with a three-prong, grounded plug for your protection against
shock hazard and should be plugged directly into a properly grounded, three-hole
receptacle. Do not cut off, remove or otherwise bypass the grounding prong on this
plug.
If it is necessary to use an extension cord, it MUST be a three-conductor, grounded
cord of 16 gauge or greater.
WARNING
This appliance is not intended for use by children under the age of 16 or persons with
reduced physical, sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision concerning use of the appliance by a person
responsible for their safety. Do not allow children to play with this appliance.
WARNING
Use caution and wear appropriate safety equipment to avoid contact with hot oil or
surfaces that may cause severe burns or injury.
DANGER
Do not filter more than one fry tank at a time.
Hot fluid – Do not fill above a point 1-½ inches below the OIL CONTAINER RIM.
WARNING
This filter unit is not suitable for outdoor use. When operating this unit, it MUST be
placed on a horizontal surface.
WARNING
This filter unit is not suitable for installation in an area where a water jet can be used,
and this appliance MUST NOT be cleaned with a water jet.
NOTICE:
If this filter unit is cleaned with water, disconnect the unit from power source before
cleaning and thoroughly dry the filter unit before reconnecting to electrical power
source.
DANGER
The crumb tray (if equipped) in portable filter systems must be emptied into a fireproof
container at the end of frying operations each day. Some food particles can
spontaneously combust if left soaking in certain shortening material.
NOTICE:
Drawings and photos used in this manual are intended to illustrate operational, cleaning
and technical procedures and may not conform to on-site management operational
procedures.
NOTICE
IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART FOR THIS DEAN
EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED
DIRECTLY FROM FRYMASTER DEAN, OR ANY OF ITS AUTHORIZED SERVICE
CENTERS, AND/OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL
CONFIGURATION, THIS WARRANTY WILL BE VOID. FURTHER, FRYMASTER DEAN
AND ITS AFFILIATES WILL NOT BE LIABLE FOR ANY CLAIMS, DAMAGES OR
EXPENSES INCURRED BY THE CUSTOMER WHICH ARISE DIRECTLY OR INDIRECTLY,
IN WHOLE OR IN PART, DUE TO THE INSTALLATION OF ANY MODIFIED PART AND/OR
PART RECEIVED FROM AN UNAUTHORIZED SERVICE CENTER.
MF90 Series Portable Filtration Systems
PAGE #
1.
1.1
1.2
1.3
1.4
1.5
1.5.1
2.
2.1
2.2
2.3
2.4
3.
3.1
3.1.1
4.
4.1
4.2
4.3
4.4
4.5
4.6
5.
5.1
5.2
5.3
5.4
6.
6.1
6.2
6.3
6.3.1
6.3.2
6.3.3
6.3.4
7.
7.1
7.2
INTRODUCTION
Parts Ordering/Service Information
Service Information
After Purchase
Safety Information
Service Personnel
Definitions
IMPORTANT INFORMATION
General
Rating Plate
Pre-Installation
Unpacking the Filter System
FILTER PREPARATION
Assembling the Filter System
Filter Paper Configuration
FILTER OPERATION
General
Filtering Tools
Filtering Preparation
Changing Filter Paper
Filter Leaf Operation …………………………………………………………………………….
Unit Operation
PREVENTATIVE MAINTENANCE
General
Each Filter Use
Daily- Close of Business
Weekly
TROUBLESHOOTING
Operating Problems
General Troubleshooting
Wiring Diagrams
MF90U 120V Wiring
MF90U 230V Wiring
MF90AU 120V Wiring
MF90AU 230V Wiring
PARTS LIST
Main Components
Plumbing, Oil-Return Components and Accessories
TABLE OF CONTENTS
1–1
1–1
1–1
1–2
1–2
1–3
1–3
2–1
2–1
2–2
2–2
2–3
3–1
3–1
3–1
4–1
4–1
4–2
4–2
4–2
4–6
4–8
5–1
5–1
5–2
5–2
6–1
6–1
6–1
6–3
6–3
6–3
6–4
6–5
7–1
7–1
7–4
7-4
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 1: INTRODUCTION
1.1 Parts Ordering/Service Information
Place parts orders directly with your local Frymaster/Dean Authorized Servicer. A list of FAS’s is
located on the Frymaster/Dean website at www.frymaster.com.If you do not have access to this list,
please contact the Frymaster/Dean service department at 1-800-551-8633 or 1 318-865-1711.
To help speed your order, the following information is required:
Model Number Type
Serial Number
Optional Features
Item Part Number Quantity Needed
1.2 Service Information
Call the 1-800-551-8633 or (318) 865-1711 Service Hotline number for the location of your nearest
Authorized Servicer. Always give the model and serial numbers of your filter unit. Also, identify if
your unit is supplied with or without a heater.
To assist you more efficiently, the following information will be needed:
Model Number Type
Serial Number
Optional Features
Nature of Problem:
Additional information (i.e. oil temperature at filter time, time of day and other pertinent
information) may be helpful in solving your service problem.
1-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 1: INTRODUCTION
1.3 After Purchase
In order to improve service, have the following chart filled in by the Dean Factory Authorized
Servicer who installed this equipment.
Authorized Service
Technician/FAS
Address
Telephone/Fax
Model Number
Serial Number
1.4 Safety Information
Before attempting to operate your unit, read the instructions in this manual thoroughly.
Throughout this manual, you will find notations enclosed in double-bordered boxes similar to the
ones below.
CAUTION
CAUTION boxes contain information about actions or conditions that may cause or result in a
malfunction of your system.
WARNING
WARNING boxes contain information about actions or conditions that may cause or result in
damage to your system, and which may cause your system to malfunction.
DANGER
DANGER boxes contain information about actions or conditions that may cause or result in injury
to personnel, and which may cause damage to your system and/or cause your system to malfunction.
1-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 1: INTRODUCTION
1.5 Service Personnel
1.5.1 Definitions
A. Qualified and/or Authorized Operating Personnel
1. Qualified/authorized operating personnel are those who have carefully read the information
in this manual and have familiarized themselves with the equipment functions, or have had
previous experience with the operation of equipment covered in this manual.
B. Qualified Installation Personnel
1. Qualified installation personnel are individuals, or firms, corporations, or companies that,
either in person or through a representative, are engaged in and are responsible for the
installation of electrical appliances. Qualified personnel must be experienced in such work,
be familiar with all electrical precautions involved, and have complied with all requirements
of applicable national and local codes.
C. Qualified Service Personnel
Qualified service personnel are those who are familiar with Dean equipment and have been
authorized by Dean to perform service on Dean equipment. All authorized service personnel are
required to be equipped with a complete set of service parts manuals and stock a minimum amount
of parts for Dean equipment. A list of Dean Factory Authorized Servicer (FAS’s) is located on the
Frymaster website at www.frymaster.com. Failure to use qualified service personnel will void the
Dean warranty on your equipment.
1-3
MF90 SERIES PORTABLE FILTRATION SYSTEMS
y)
CHAPTER 2: IMPORTANT INFORMATION
2.1 General
MF-90 portable filters can be used with a variety of Dean fryers, as well as other manufacturers’
equipment. Oil capacity ranges from 80 to 110 pounds of oil, depending on the model. Unit length,
width, height and tank height dimensions for all units are listed in the table below.
Model Unit Height
(inches)
MF-90/80 24 17 ¾ 24 ¾ 10 ¾ 80
MF-90/80 LP 24 18 33 ½ 9 105
MF-90/110 26 ¼ 17 ¾ 24 ¾ 12 ¾ 110
Unit Width
(inches)
Unit Length
(inches)
Tank Height
(inches)
Oil Capacity
(pounds)
Unit Height
Tank Height
Unit Width
Unit Length
MF90 Series filter unit dimensions (unit and tank heights are measured from bottom
of casters to top of unit and tank, respectivel
.
2-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 2: IMPORTANT INFORMATION
2.1 General (cont.)
The used oil may be drained by gravity from the fryer into the filter pan (MF90 "U" models), or
removed from the fryer by use of a suction/return hose (MF90 "AU" models). On "AU" models, the
oil is pumped back into the frypot using the same suction/return hose.
Oil or shortening is filtered through filter paper. Filter powder, which enhances the filtering process,
is distributed over the paper prior to filtering.
All units are shipped completely assembled with accessories packed inside the filter pan. All units
are adjusted, tested and inspected at the factory before shipment.
WARNING
The on-site supervisor is responsible for ensuring that operators are made aware of
the inherent dangers of operating a hot oil filter system, particularly the aspects of
oil filtration, and draining/cleaning procedures.
A 7-amp (115V-domestic) or 5-amp (230V-international) circuit breaker installed on the filter unit
switches the power OFF if an overload occurs.
NOTE: If the circuit breaker is triggered, depress the reset button to activate the circuit after the
failure has been detected and repaired.
2.2 Rating Plate
Information on the rating plate includes model and serial numbers, as well as electrical requirements.
The rating plate is located on the back housing, near the electrical receptacle. Have the rating plate
information handy when communicating with the factory about a unit or requesting special parts or
information. Without this information, proper identification of the unit cannot be confirmed.
2.3 Pre-Installation
NOTE: Failure to use qualified service personnel will void the Dean warranty.
A. Standards: Use of this filter unit must be in accordance with all applicable state and local
codes.
B. Electrical Connections: Domestic MF90 filter units require a 115V 60 Hz., 15 amp electrical
supply. International/CE units require 230V 50 Hz., 7 amp electrical supply. Units are
equipped with a grounded male receptacle for use with a 16-3 SJT power cord set. If an
extension cord is required, it must be a three-conductor, grounded power cord of at least 16
gauge.
2-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 2: IMPORTANT INFORMATION
2.4 Unpacking the Filter System
Ensure the container is upright. Unpack the filter carefully and remove all accessories from the
carton. Do not discard or misplace parts and/or accessories; they will be needed for filter setup
and operation. Any accessories or starter kits included with the unit will be packaged inside
the filter tank.
After unpacking, immediately check the equipment for visible signs of shipping damage. If
such damage has occurred, contact the carrier and file the appropriate freight claims. Do not
contact the factory, as the responsibility of shipping damage is between the carrier and dealer
or end-user.
If your equipment arrives damaged:
a. File claim for damages immediately – Regardless of extent of damage.
b. Visible loss or damage – Be sure this is noted on the freight bill or express receipt and is
signed by the person making the delivery.
c. Concealed loss or damage – If damage is unnoticed until equipment is unpacked, notify
freight company or carrier immediately, and file a concealed damage claim. This should be
done within 15 days of date of delivery. Retain the shipping container for inspection.
NOTE: Dean does not assume responsibility for damage or loss incurred in transit.
2-3
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 3: FILTER PREPARATION
3.1 Assembling The Filter System
On initial installation and before each use, remove all loose parts from the filter, wash the filter pan
and all accessories in hot, soapy water and dry thoroughly.
WARNING!
Water or boil-out solution MUST not be allowed to drain into the filter pan or filter
system. Irreversible damage will result if water is allowed into the system, and the
warranty will be voided.
The MF90 portable filtration system uses a filter support grid, one sheet of filter paper and a holddown ring to secure the filter paper in place.
3.1.1 Filter Paper Configuration
4
3
See illustration for proper assembly.
1. Filter Pan Cover
2. Hold-Down Ring
3. Filter Paper (one sheet)
4. Screen/Support Grid
5. Filter Pan Assembly
5
A. First, place the support grid in the bottom of filter pan.
B. Place one sheet of filter paper on top of the support grid. Be sure the paper covers the whole
filter pan bottom.
C. Position the hold-down ring on top of the filter paper and latch the hold-down ring and filter
paper securely against the filter pan bottom, forming a tight seal.
D. Sprinkle 8 ounces of filter powder over the filter paper, distributing the powder as evenly as
possible. If filtering a second frypot immediately after the first, add only 4 ounces of filter
powder for the second filtering.
E. Place the crumb catcher screen (if applicable) in the filter pan. Allow the crumb catcher screen
to rest on the top edges of the hold-down ring.
F. Place filter pan cover onto the filter pan assembly.
12
3-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 3: FILTER PREPARATION
3.1.1 Filter Paper Configuration (cont.)
G. Position filter under the fryer drainpipe for gravity drain operations, or nearby the fryer for
suction operations ("AU" models only). Lock rear casters to prevent filter from moving out of
position during the filtering process.
MF-90 portable filter (Low Profile shown) positioned correctly next to fryer drain valve,
with rear casters locked in place.
3-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.1 General
The Dean Portable Filters are designed to operate as an independent filter unit. Operations always
start by ensuring the unit is properly plugged in, then rolling the filter to the fryer to be filtered. The
filter will work directly under the fryers’ drain valves, or close to the fryer ("AU" suction models
only). The general layout of a MF90 "U" Series Portable Filter System with major components
identified is illustrated below.
WAND
FRYPOT
OIL-RETURN HOSE
QUICK-DISCONNECT
COUPLING
PUMP
DRAIN VALVE WITH
EXTENSION
LOCKING
REAR
FILTER PAN
Arrows indicate direction of oil flow during the filtration process.
CASTERS
4-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.2 Filtering Tools
These tools are not required, but are recommended to make the filtering task easier.
A. Measuring Cup: Used to measure eight ounces by volume of filter powder.
B. Scrub Brush: To clean sediment and residue from the filter pan and frypot.
C. Appropriate Clothing.
4.3 Filter Preparation
1. Position the MF-90 filter next to the fryer. Remove filter pan lid and position filter unit
under frypot drain-valve extension ("U" units) or nearby the fryer ("AU" units).
2. Ensure the filter power switch is in "OFF" position prior to connecting to power supply.
3. Plug power cord into electrical outlet. The filter unit is ready for filtering. After filtering,
follow instructions in Section 4.4, Changing Filter Paper or 4.5 Use With Filter Leaf.
DANGER
The crumb tray (if equipped) in portable filter systems must be emptied into a
fireproof container at the end of frying operations each day. Some food particles
can spontaneously combust if left soaking in certain shortening material.
4.4 Changing Filter Paper
Filter paper should be replaced after each filter
session, and most certainly at the beginning of
each workday. If filter paper is replaced once
per day, excess sediment should be scraped from
the filter paper after each frypot is filtered (see
photo). Use care not to tear the paper when
scraping off sediment. Filter at closing if
possible. This ensures the oil/shortening is at
proper filtering temperature.
Note: If filtering at closing, remove and discard
the used filter paper in a fire-proof container
when filter operations are complete. Wash all
components in soapy water and dry completely.
If filtering more than one frypot with the same
filter paper, scrape excess sediment from the
filter paper after each filtering.
4-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.4 Changing Filter Paper (cont.)
Remove and replace the paper as follows:
1. Remove filter cover. Place the hose wand in the wand holster, located on the left side of the
pan (arrow).
2. Open the locking latches of the hold-
down ring and lift the ring out of the
filter tank.
3. Roll both ends of the filter paper into the
center, ensuring no sediment falls out,
and discard.
Removing hold-down ring. Note location of
wand holster (arrow).
Removing dirty filter paper from pan.
4-3
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.4 Changing Filter Paper (cont.)
4. Remove and check the filter paper
support screen for cleanliness and clean
if necessary.
5. Check the filter-pan for cleanliness and
clean if necessary; check the drain ports
at the bottom rear of the filter pan and
clear any solidified shortening from the
opening. Also ensure vent hole on top of
tube is clear of shortening and/or debris
(white arrow).
Removing paper support screen from pan.
6. Replace the filter paper support screen
and place a new sheet of filter paper on
top of the screen.
Solidified shortening can build-up in the nipplepipe assembly.
Placing new sheet of filter paper over paper
support screen.
4-4
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.4 Changing Filter Paper (cont.)
7. Replace the hold-down ring and secure
by locking latches in place.
8. Measure 8 ounces of filter powder and
distribute evenly over the paper surface.
9. Replace filter pan cover. The filter is
ready for operation.
Secure the hold-down ring latches to lock filter
paper in place.
Evenly distribute 8 ounces of filter powder over
the filter paper surface.
Filter unit ready for filtering operations.
4-5
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.5 Use With Filter Leaf
MF90 systems incorporating a filter-leaf assembly use a fine mesh screen to filter impurities and
debris from the oil. The oil is pumped through the screen and then returned to the frypot. The
advantages of the filter-leaf include unlimited re-use and the elimination of paper cost.
Filter pans with filter-leaf assemblies are assembled as illustrated below:
1. Remove the filter pan lid.
2. Place the filter leaf in the bottom of the pan.
3. Apply the manufacturer’s recommended amount of filter powder.
4. Replace the lid, ensuring the pipe from the filter leaf extends above the pan lid.
5. Attach the vacuum hose from the pump assembly to the filter leaf pipe extension.
4-6
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
CLEANING THE FILTER-LEAF ASSEMBLY
Filters equipped with a filter-leaf require specific cleaning and assembly procedures. In the absence
of cleaning and disassembly/reassembly instructions shipped with the filter-leaf, use the following
procedure (see illustration below):
Grasp the seal frame near each corner at the locking tab (
1
) and pull frame apart. The seal frame
will separate into two pieces. Separate the top and bottom screens (
grid (
4
). Assemble in reverse order (see illustration below).
2
and
3
) and remove the
Clean the two seal frame pieces, screens and grid using a good quality degreaser and hot water from
a spray nozzle. The groove in the seal frame pieces can be cleaned with the edge of a ScotchBrite™ type cleaning pad.
At each scheduled fryer boil-out, disassemble the filter-leaf and place in the frypot filled with
boil-out solution (where applicable). Follow the boil-out procedure in the Installation and Operation
manual included with the fryer. After boil out is complete, place the filter-leaf in a vinegar solution
(1 pint vinegar to 1/2 gallon water) to neutralize boil-out residue. Rinse the filter-leaf in clean water
to rinse away vinegar residue.
Allow all filter-leaf components to air dry or thoroughly dry with paper towels.
Typical filter-leaf assembly
4
2
1
4.6 Unit Operation
1
3
4-7
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.6 Unit Operation
Follow the appropriate Sections 4.3 and 4.4, 4.5 to prepare the filter unit for operation and follow
these steps:
1. Position the filter unit under the fryer drain valve extension for gravity drain, or near the fryer for
"suction" operations if the unit is an "AU" unit. On "AU" units, ensure the wand filter screen is
screwed securely onto the wand end, prior to pumping oil/shortening out of fryer.
2. Turn the fryer main power switch to the "OFF" position.
DANGER
Do not leave filter unit unattended during the filtering operation. Pressurized oil
moving through the lines can cause the flexible return hose and wand assembly to
pop loose and spray hot oil.
Avoid spilling hot oil onto floor surfaces. When draining fryer into filter, never
exceed the maximum capacity of the filter pan.
3. Open the fryer door and ensure the filter is in the proper position under the fryer drain valve
extension ("U" units- see photo below), or close to the fryer ("AU" units). Lock rear casters to
prevent filter movement during the filtering process.
4-8
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.6 Unit Operation (cont.)
DANGER
The oil temperature of the fryer to be filtered should be approximately 350°F (175°C).
Position drain handles properly prior to operating the filter unit. Failure to do this
can result in burn injury to the user.
4. Open the drain-valve and allow the frypot oil
to drain into the filter pan.
Note: When using "AU" units for suction
operation, insert the wand with filter screen
attached into the frypot, then place the switch
in the "IN" position. After all oil has been
pumped from the frypot, insert the wand end
into the wand holster. Ensure the wand is
placed securely in the holster, then place the
switch in the "OUT" position to circulate and
filter the oil.
5. With the oil return wand in frypot, turn filter
switch "ON" to begin pumping clean oil into
the fryer. Allow the oil to recycle through the
fryer for a few seconds to wash out sediment
on the bottom of the frypot before closing the
drain valve. When using "AU" units for
suction operation, place the switch in the
"OUT" position to return oil to the frypot. If
the frypot is drained by the suction method,
all sediment must be wiped out by hand prior
to returning filtered oil to the frypot.
Note: All units- The oil return wand can also
be mounted in the wand holster inside the pan,
for extended filtering periods (polishing) prior
to refilling frypot. NEVER LEAVE THE
FILTER SYSTEM UNATTENDED WHILE
FILTERING!
Frypot draining into filter pan. Ensure oil is at
operating temperature before opening drain
valve.
Use the nozzle to rinse sediment and debris
from the frypot during the filtering process ("U"
units only).
4-9
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 4: FILTER OPERATION
4.5 Unit Operation (cont.)
6. When filtering is complete, close the drain
valve handle. It takes approximately 5 to 7
minutes for the filter to pump all the oil back
into the fryer. For "AU" units, pump the oil
into the frypot after all sediment has been
removed and the drain valve is closed.
7. Allow the pump to run for 10-15 seconds
after air starts to flow through the wand,
before shutting off the filter. Clearing
residual shortening/oil from the return lines
reduces the likelihood of clogged lines.
NOTE: After filtering, scrape off debris and sediment accumulated on the filter paper and
discard into a fire-proof container.
CAUTION
If using solid shortening, the return hose must be completely drained after filtering,
or the shortening will solidify and plug the hose or oil return lines as it cools.
NOTE: If filtration operations problems are encountered during use, please refer to Chapter 6
in this manual.
4-10
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 5: PREVENTATIVE MAINTENANCE
5.1 General
Cleaning operations fall into three general categories:
Wiping unit clean after each filter session;
Cleaning, changing filter paper and preparing the unit for the next day’s business.
Weekly cleaning to remove oil deposits and other particles that were previously missed.
WARNING
Do not use water jets to clean this equipment. To do so will damage the unit and void
the warranty.
WARNING
Never operate the filter unit unless cooking oil is at operating temperature.
5.2 Each Filter Use
Each time the MF90 filter is used:
Wash down the insides of the filter pan with hot oil.
Change filter paper after each filter session or at the end of the day. Scrape sediment from
filter paper after each frypot is filtered within a filter session.
Wipe up any oil which may have splashed or spilled.
Wipe all exterior surfaces of the filter unit.
WARNING
Do not run water or boil-out solution through the portable filter. Doing so will cause
irreparable damage to the pump, and void the warranty.
5-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 5: PREVENTATIVE MAINTENANCE
5.3 Daily- Close Of Business
At the close of a working day, filter the oil in all fryers. When the last fryer is finished, follow these
steps:
1. Ensure the flexible hose and pump lines are clear by running the filter pump for an
additional 10–15 seconds after air bubbles start coming from the oil return line. Then drain
the flexible hose.
2. Remove the filter pan cover and hold-down ring assembly, then remove the filter paper and
filter paper support screen.
3. Discard filter paper.
4. Wash all filter components with soapy water and rinse.
5. Dry all filter parts and filter pan thoroughly before reassembling.
6. Check all fittings at the rear of the filter unit; ensure that all fittings are properly tightened
and no leaks are present.
DANGER
The crumb tray (if applicable) in portable filter systems must be emptied into a
fireproof container at the end of frying operations each day. Some food particles
can spontaneously combust if left soaking in certain shortening material.
5.4 Weekly
Follow the same procedure as for "Daily", with these additional steps:
Wash the filter pan with hot, soapy water and a suitable brush. Dry and reassemble with
new filter paper (1 sheet).
Clean thoroughly under, around, and behind the fryers and filtering area.
Do not operate motor/pump until all traces of water have been removed from the pan.
Under no circumstances should water or boil-out solution be allowed to enter the pump
housing.
Check the connections of the inlet lines and tighten if lines become loose or start to leak oil.
5-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 6: TROUBLESHOOTING
6.1 Operating Problems
Plugged lines and plugged filter paper account for over 90 percent of filtration system malfunctions.
Troubleshooting flowcharts included in this chapter, provide step-by-step instructions to assist the
operator in diagnosing common malfunctions.
A. Plugged Lines
1. To guard against plugged lines when using solid shortening, follow these guidelines:
a. At the end of the filtering cycle, let the filter bubble into the fryer through the flexible
hose for about 10-15 seconds. If it is blowing bubbles, air is moving through the lines
and the filter is less likely to be plugged.
b. When filtering is complete, disconnect the flexible line and hang it up to drain.
B. Plugged Paper
Improper use of the filter powder will cause a slow oil flow return rate. The first indication of paper
plugging is a surging, jerking movement of the hose. To correct this, review the instructions for the
correct use of filter powder, and change the filter paper more frequently. When filtering several
fryers prior to changing paper, ensure that excess sediment is scraped off the filter paper after
filtering each frypot. If plugged paper remains a problem, review the chart in section 6.2 for proper
diagnosis.
6.2 General Troubleshooting
The following chart contains information to assist the user in diagnosing the most common
malfunctions with portable filtration systems. Possible solutions and/or corrective actions are given
for each scenario.
If the malfunction cannot be diagnosed using the information in this section, contact your Factory
Authorized Servicer for repairs.
DANGER
Use extreme care when testing electrical circuits. Live circuits will be exposed.
DANGER
Inspection, testing and repair of gas or electrical equipment should be performed by
qualified personnel.
6-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 6: TROUBLESHOOTING
6.2 General Troubleshooting (cont.)
6-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 6: TROUBLESHOOTING
6.3 Wiring Diagrams
6.3.1 MF90U 120V Wiring
Switch Housing
BLK
ON/OFF Switch
BLK
CB
7 Amp Circuit Breaker
BLK
Receptacle
BLK
GRN
WHT
120 VAC
IN-LINE SPLICE
IN-LINE SPLICE
P1
P2
T3
T8
T2
T4
T5
Motor Terminal Box
6.3.2 MF90U 230V Wiring
ON/OFF Switch
BLK
Switch Housing
BLK
CB
BLK
WHT
GRN
5 Amp Circuit
Breaker
Receptacle
BLK
GRN
WHT
230 Volt
IN-LINE SPLICE
IN-LINE SPLICE
P1
T2
T3
T8
T4
T5
Motor Terminal Box
BLK
WHT
GRN
6-3
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 6: TROUBLESHOOTING
6.3.3 MF90AU 120V Wiring
BLK
WHT
GRN
RECEPTACLE
PUMP
CIRCUIT BREAKER
REVERSING
SWITCH
IN-LINE SPLICE
BLKBLK
IN-LINE SPLICE
BLU
BLK
RED
BRN
YLW
BLU
BLK
BRN
YLW
RED
P1
T8
T2
MOTOR
T4P2T3
TERMINAL
BOX
T5
= Dummy Terminal
(No Connections)
SWITCH HOUSING
6-4
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 6: TROUBLESHOOTING
6.3.4 MF90AU 230V Wiring
BLK
RECEPTACLE
WHT
GRN
IN-LINE SPLICE
IN-LINE SPLICE
CIRCUIT BREAKER
BLK
GRN
PUMP
REVERSING
SWITCH
= Dummy Terminal
(No Connections)
BLK
BLU
BLK
RED 4
BRN
YLW
RED 5
SWITCH HOUSING
RED 5
T5
YLW
T8
T2
BRN
BLK
P1
T3
BLU
RED 4
P2
WHT
T4
MOTOR
TERMINAL
BOX
6-5
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 7: PARTS LIST
7.1 Main Components
13
12
14
15 16
10
9
24
Item Part # Description
* Not Illustrated
22
21
23
25
27
1
2
26
20
3
27
19
18
17
9
11
8
4
1 810-2806 Caster, Rear- Locking- 2" Swivel
2 810-2805 Caster, Front- Non-Locking 2" Swivel
3 823-3584 Frame, Filter- MF90/80 Series
* 823-3613 Frame, Filter MF90/80 LP Series
* 823-3606 Frame, Filter MF90/110 Series
7
6
5
7-1
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 7: PARTS LIST
7.1 Main Components (cont.)
Item Part # Description
4 823-3585 Pan, Filter- MF90/80 "U"
* 823-3604 Pan, Filter- MF 90/80 "AU"
* 823-3680 Pan, Filter- MF 90/80 LP "U"
* 823-3822 Pan, Filter- MF 90/80 LP "AU"
* 823-3607 Pan, Filter- MF 90/110 "U"
* 823-3609 Pan, Filter, UMF90A, Filter Leaf option
* 809-0070 Nut, ¼-20 Hex SS (Filter Pan to Frame- 4 Required)
* 809-0190 Washer, .625 x .275 x 40 Flat SS (Use With 809-0070)
5 810-2744 Leaf Filter, 13.25 x 13.25
6 823-3173 Screen, Paper Support- MF90/80 & 110
* 823-3616 Screen, Paper Support- MF90/80 LP
7 106-2015SP Ring, Hold-down Assembly- MF90/80 & 110
* 106-2032SP Ring, Hold-down Assembly- MF90/80 LP
* 823-3670 Ring, Hold-down- MF90/80 & 110 (Without Handles)
* 823-3671 Ring, Hold-down- MF90/80 LP (Without Handles)
8 810-2108 Handle, Latch (4 Required)
* 809-0808 Screw, Shoulder- 5/16-18 x 0.803" (For Latch Han dle s)
9 210-2958 Lid, Filter Pan- MF90/80 & 110
* 106-1825 Lid, Filter Pan MF90/80 Leaf Filter Option
* 210-1883 Lid, Filter Pan- MF90/80 LP
10 810-0180 Handle, Chrome- Pan Lid
* 809-0918 Screw, #10-24 x ½" (Pan Lid Handle)
* 809-0191 Washer, ¼" Spring
11 823-3962 Housing, Top- Motor/Component
12 200-1542 Housing, Switch
13 823-3590 Back, Motor Housing
14 807-3577 Breaker, Circuit- 7 Amp (120VAC)
* 807-3538 Breaker, Circuit- 5 Amp (230VAC)
15 807-1041 Switch, Toggle- On/Off SPST- "U" Series Only
16 807-1040 Switch, Hesitation Toggle- 3-Way- "AU" Series Only
17 106-1831SP Disconnect, Quick Assembly- 3/8"
18 813-0772 Nipple, 3/8" NPT x Close- SS
19 813-0691 Elbow, ½ x 3/8" Chrome-Plated
20 813-0761 Nipple, ½ NPT x 5" SS
7-2
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 7: PARTS LIST
7.1 Main Components (cont.)
Item Part # Description
21 810-2252 Pump, Filter- 5GPM
22 810-2100 Motor, Filter Pump- 115/230V 1/3 HP
* 807-3689 Harness, Wire- Receptacle To Motor
* 807-3752 Harness, Wire- Motor To Switch/Circuit Breaker
23 210-2955 Bracket, Receptacle Mount- 120V Units Only
* 210-3818 Bracket, Receptacle Mount- 230V Units Only
24 807-1219 Receptacle, 120 VAC Three-Wire
* 807-3795 Receptacle, 230 VAC Three-Wire
25 200-1588 Tray, Pump and Motor
26 807-1224 Cordset, 120V Filter
* 807-3831 Connector, Export Plug- 230V (Cord Not Included)
27 210-3324 Cover, Rear
28 210-1570 Cover, Switch/Circuit Breaker
* Not Illustrated
7-3
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 7: PARTS LIST
7.2 Plumbing, Oil-Return Components and Accessories
12
3
4
9 10
2
1
3
5
13
6
8
7
3
12
93
1
10
6
12
2
1
11
8
2
14 15
17
16
18
7-4
MF90 SERIES PORTABLE FILTRATION SYSTEMS
CHAPTER 7: PARTS LIST
7.2 Plumbing, Oil-Return Components and Accessories (cont.)
Item Part # Description
1 813-0022 Nipple, ½" NPT x Close
2 813-0062 Elbow, ½" NPT 90°
3 810-1668 Adapter, Male- 5/8 O.D. x ½" (Flexline to NPT)
4 810-1400 Flexline, 5/8 x 21" ("U" Series Only)
5 813-0629 Plug, ½" NPT Square Head
6 813-0003 Tee, ½" NPT
7 813-0165 Elbow, Street- ½" NPT BM ("AU" Series Only)
8 813-0093 Nipple, ½ x 4" NPT BM ("AU" Series Only)
9 810-0430 Valve, Swing Check- ("AU" Series Only)
10 813-0087 Nipple, ½ x 1-½" NPT BM ("AU" Series Only)
11 813-0173 Union, ½" NPT BM
12 810-1067 Flexline, 5/8 x 8-½" ("AU" Series Only)
13 810-2172 Connector, Disconnect- Ma le
14 813-0632 Elbow, Street- 3/8" 90°
15 810-2113 Hose, ½ x 3/8" Fittings- 61-½" Long
* 810-2245 Hose Assy, 16-3/4, Filter Leaf Option
16 106-1454SP Wand, Hose- MF90 "U" Series Only
17 106-2149SP Wand, Hose- MF90 "AU" Series Only
18 810-2066 Screen, Hose Wand- MF90 "AU" Series Only
* 803-0284
* 803-0285
* 803-0002 Filter Powder, Carton
* Not Illustrated
Filter Paper, 16-3/8 x 24-3/8"- 100 Sheets (MF90/80 LP
Units Only)
Filter Paper, 16-3/8 x 18-3/8"- 100 Sheets (MF90/80
and 110 Units Only)
7-5
/
Shipping Address: 8700 Line Avenue, Shreveport, Louisiana 71106
PRINTED IN THE UNITED STATES
TEL 1-318-865-1711
819-5934
12
2017
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