Carrier 794, 751, 774, 750, 754 User Manual
Models 750/751/754/774/794
Soft Serve Freezers
Operating Instructions
028754--M
2/01/02
Complete this page for quick reference when service is required:
Taylor Distributor:
Address:
Phone:
Service:
Parts:
Date of Installation:
Information found on the data label:
Model Number:
Serial Number:
Electrical Specs: Voltage Cycle
Phase
Maximum Fuse Size: A
Minimum Wire Ampacity: A
E February, 2002 Taylor
All rights reserved.
028754--M
The word T aylor and the Crown design
are registered trademarks in the United States
of America and certain other countries.
Taylor Company
750 N. Blackhawk Blvd.
Rockton, IL 61072
Table of Contents
Section 1 To the Installer 1............................................
Water Connections (Water Cooled Units Only) 1............................
Air Cooled Units 1.......................................................
Electrical Connections 1.................................................
Section 2 To the Operator 2...........................................
Compressor Warranty Disclaimer 2.......................................
Section 3 Safety 3....................................................
Section 4 Operator Parts Id en t ificatio n 4...............................
Model 750 4............................................................
Model 751 5............................................................
Model 754 6............................................................
Model 774 7............................................................
Model 774 Topping Pump 8..............................................
Model 794 9............................................................
Models 750 & 751 Single Spout Door and Beater Assembly 10................
Models 754, 774 & 794 Three Spout Door and Beater Assembly 11............
Section 5 Important: To the Operator 12.................................
Symbol Definitions 12....................................................
Power Switch 13.........................................................
MIX LOW Indicator Light 13...............................................
MIX REF Key 13.........................................................
STANDBY Key 13........................................................
WASH Key 13...........................................................
AUTO Key 13...........................................................
Reset Button 14.........................................................
Air Tube 14.............................................................
Adjustable Draw Handle 14...............................................
Models 750, 751, 754, 774, 794 Table of Contents
Table of Contents -- Page 2
Section 6 Operating Procedures 15.....................................
Prior to Set-Up (Model 774) 15............................................
Assembly 15............................................................
Sanitizing 20............................................................
Priming 22..............................................................
Closing Procedure 23....................................................
Draining Product From T he Freezing Cylinder 23............................
Rinsing 23..............................................................
Cleaning 23.............................................................
Disassembly 24..........................................................
Brush Cleaning 24.......................................................
Section 7 Important: Operator Checklist 25..............................
During Cleaning and Sanitizing 25.........................................
Troubleshooting Bacterial Count 25........................................
Regular Maintenance Checks 25...........................................
Winter Storage 26........................................................
Section 8 Troubleshooting Guide 27....................................
Section 9 Parts Replacement Schedule 30...............................
Section 10 Parts List 31.................................................
Wiring Diagrams 42......................................................
Note: Continuing research results in steady improvements; therefore, information
in this manual is subject to change without notice.
Table of Contents Models 750, 751, 754, 774, 794
Section 1 To the Installer
This machine is designed for indoor use only.
DO NOT install the machine in an area where
a water jet could be used to clean or rinse the machine.
Failure to follow this instruction may result in serious
electrical shock.
Water Connections
(Water Cooled Units Only)
An adequate cold water supply must be provided with
a hand shut-off valve. On the underside rear of the
base pan, two 3/8” I.P.S. (for single-head units) or two
1/2” I.P.S. (for double-head units) water connections
for inlet and outlet have been provided for easy
hook-up. 1/2” inside diameter water lines should be
connected to the machine. (Flexible lines are
recommended, if local codes permit.) Depending on
local water conditions, it may be advisable to install a
water strainer to prevent foreign substances from
clogging the automatic water valve. There will be only
one water “in” and one water “out” connection for both
single-head and double-head units. DO NOT install a
hand shut-off valve on the water “out” line! Water
should always flow in this order: first, through the
automatic water valve; second, through the
condenser; and third, through the outlet fitting to an
opentrapdrain.
Electrical Connections
Each freezer requires one power supply for each data
label. Check the data label(s) on the freezer for fuse,
circuit ampacity and electrical specifications. Refer to
the wiring diagram provided inside of the electrical box,
for proper power connections.
In the United States, this equipment is intended to be
installed in accordance with the National Electrical
Code (NEC), ANSI/NFPA 70--1987. The purpose of
the NEC code is the practical safeguarding of persons
and property from hazards arising from the use of
electricity. This code contains provisions considered
necessary for safety. Compliance therewith and
proper maintenance will result in an installation
essentially free from hazard!
In all other areas of the world, equipment should be
installed in accordance with the existing local codes.
Please contact your local authorities.
Stationary appliances which are not equipped with a
power cord and a plug or other device to disconnect
the appliance from the power source must have an
all--pole disconnecting device with a contact gap of at
least 3 mm installed in the external installation.
CAUTION: THIS EQUIPMENT MUST BE
PROPERLY GROUNDED! FAILURE TO DO SO
CAN RESULT IN SEVERE PERSONAL INJURY
FROM ELECTRICAL SHOCK!
Beater rotation must be clockwise as viewed looking
into the freezing cylinder of any model freezer.
Note: The following procedures should be
Air Cooled Units
The model 750 air cooled unit requires a minimum of
6” (152 mm) of clearance on both sides and 0” in the
rear of the unit. The model 751, 754, 774 and 794 units
require 3” on all sides. This will allow for adequate air
flow across the condenser(s). Failure to allow
adequate clearance can reduce the refrigeration
capacity of the freezer and possibly cause permanent
damage to the compressor.
Models 750, 751, 754, 774, 794 To the Installer
performed by a trained service technician.
To correct rotation on a three-phase unit, interchange
any two incoming power supply lines at freezer main
terminal block only.
To correct rotation on a single-phase unit, change the
leads inside the beater motor. (Follow diagram printed
on motor.)
Electrical connections are made directly to the
terminal block provided in the main control box located
under the upper left side panel on the Model 750, or
050418
1
Section 2 To the Operator
The freezer you have purchased has been carefully
engineered and manufactured to give you dependable
operation. The Taylor Company soft-serve models
covered in this manual consist of the following: 750,
751, 754, 774, and 794.
These units, when properly operated and cared for, will
produce a consistent quality product. Like all
mechanical products, they will require cleaning and
maintenance. A minimum amount of care and
attention is necessary if the operating procedures
outlined in this manual are followed closely.
This Operator’s Manual should be read before
operating or performing any maintenance on your
equipment.
Your Taylor freezer will NOT eventually compensate
for and correct any errors during the set-up or filling
operations. Thus, the initial assembly and priming
procedures are of extreme importance. It is strongly
recommended that personnel responsible for the
equipment’s operation, both assembly and
disassembly, go through these procedures together in
order to be properly trained and to make sure that no
confusion exists.
In the event you should require technical assistance,
please contact your local authorized Taylor Distributor.
If the crossed out wheeled bin symbol is
affixed to this product, it signifies that this product is
compliant with the EU Directive as well as other similar
legislation in effect after August 13, 2005. Therefore,
it must be collected separately after its use is
completed, and cannot be disposed as unsorted
municipal waste.
The user is responsible for returning the product to the
appropriate collection facility,as specified by your local
code.
For additional information regarding applicable local
laws, please contact the municipal facility and/or local
distributor.
Compressor Warranty Disclaimer
The refrigeration compressor(s) on this machine are
warranted for the term indicated on the warranty card
accompanying this machine. However, due to the
Montreal Protocol and the U.S. Clean Air Act
Amendments of 1990, many new refrigerants are
being tested and developed, thus seeking their way
into the service industry. Some of these new
refrigerants are being advertised as drop-in
replacements for numerous applications. It should be
noted that, in the event of ordinary service to this
machine’s refrigeration system, only the refrigerant
specified on the affixed data label should be used.
The unauthorized use of alternate refrigerants will void
your compressor warranty . It will be the owner’s
responsibility to make this fact known to any technician
he employs.
It should also be noted that Taylor does not warrant the
refrigerant used in its equipment. For example, if the
refrigerant is lost during the course of ordinary service
to this machine, Taylor has no obligation to either
supply or provide its replacement either at billable or
unbillable terms. Taylor does have the obligation to
recommend a suitable replacement if the original
refrigerant is banned, obsoleted, or no longer available
during the five year warranty of the compressor.
The Taylor Company will continue to monitor the
industry and test new alternates as they are being
developed. Should a new alternate prove, through our
testing, that it would be accepted as a drop-in
replacement, then the above disclaimer would
become null and void. To find out the current status of
an alternate refrigerant as it relates to your
compressor warranty, call the local Taylor Distributor
or the Taylor Factory. Be prepared to provide the
Model/Serial Number of the unit in question.
050818
2
Models 750, 751, 754, 774, 794To the Operator
Section 3 Safety
We at Taylor Company are concerned about the safety
of the operator when he or she comes in contact with
the freezer and its parts. Taylor has gone to extreme
efforts to design and manufacture built-in safety
features to protect both you and the service technician.
As an example, warning labels have been attached to
the freezer to further point out safety precautions to the
operator.
IMPORTANT -- Failure to adhere to the
following safety precautions may result in severe
personal injury. Failure to comply with these
warnings may also damage the machine and its
components. Component damage will result in
part replacement expense and service repair
expense.
S DO NOT allow untrained personnel to
operate this machine.
S DO NOT operate the freezer unless all
service panels and access doors are
restrained with screws.
S DO NOT remove the door, beater and
blades, or drive shaft unless all control
switches are in the OFF position.
S DO NOT put objects or fingers in door
spout.
Failure to follow these instructions may result in
contaminated product or severe personal injury to
fingers or hands from hazardous moving parts.
To Operate Safely:
DO NOT operate the freezer without reading
this operator’s manual. Failure to follow this instruction
may result in equipment damage, poor freezer
performance, health hazards, or personal injury.
S DO NOT operate the freezer unless it is
properly grounded.
S DO NOT attempt any repairs unless the
main power supply to the freezer has been
disconnected.
S DO NOT operate the freezer with larger
fuses than specified on the freezer data
label.
Failure to follow these instructions may result in
electrocution or damage to the machine. Contact your
local authorized Taylor Distributor for service.
DO NOT use a water jet to clean or rinse the
freezer. Failure to follow this instruction may result in
serious electrical shock.
USE EXTREME CAUTION when removing
the beater assembly. The scraper blades are very
sharp and may cause injury.
This freezer must be placed on a level
surface. Failure to comply may result in personal injury
or equipment damage.
DO NOT obstruct air intake and discharge openings:
Counter Model: 6” (152 mm) minimum air space on
both sides and 0” on the rear.
Console Models: 3” (76 mm) minimum air space on
all sides.
Failure to follow this instruction may cause poor
freezer performance and damage to the machine.
These freezers are designed to operate indoors, under
normal ambient temperatures of 70_-- 7 5 _F
(21_-- 2 4 _C). The freezers have successfully
performed in high ambient temperatures of 104_F
(40_C) at reduced capacities.
NOISE LEVEL: Airborne noise emission does not
exceed 78 dB(A) when measured at a distance of 1.0
meter from the surface of the machine and at a height
of 1.6 meters from the floor.
050418
Models 750, 751, 754, 774, 794 Safety
3
Section 4 Operator Parts Identification
Model 750
Item Description Part No.
1 Cover A.-Hopper X38458
2 Gasket-Hopper Cover 038375
3 Tube A.-Feed X29429-2
4 Panel-Rear 020891
5 Panel-Upper Side Right 042317
6 Pan-Drip 050766
7 Panel-Right Side 050742
8 Shield-Splash 022763
9 Tray-Drip 013690
Item Description Part No.
10 Panel-Side Left 050741
11 Leg-4” SS w/O-Ring 013458
12 Louver-Side-Left 013631
13 Stud-Nose Cone 022822
14 Panel A.-Front X50754
15 O-Ring-.643 OD x .077 W 018572
16 O-Ring-3/8 OD x .070 W 016137
17 Orifice 022465-100
4
Models 750, 751, 754, 774, 794Operator Parts Identification
Model 751
Item Description Part No.
1 Cover A.-Hopper X38458
2 Gasket-Hopper Cover 038375
3 Tube A.-Feed X29429-2
4 Panel-Rear 013637
5 Panel-Upper Side Right 028823
6 Pan-Drip 11-5/8 Long 027503
7 Panel A.-Lower Side Right X24424
8 Shield-Splash 022763
9 Tray-Drip 14-7/8 x 5-1/8 013690
10 Panel-Upper Side Left 024426
Models 750, 751, 754, 774, 794 Operator Parts Identification
Item Description Part No.
11 Panel-Service 047170
12 Caster-Swivel 018794
13 Stud-Nose Cone 022822
14 Panel A.-Side-Lower-Louvered X39075
15 O-Ring-.643 OD x .077 W 018572
16 O-Ring-3/8 OD x .070 W 016137
17 Orifice 022465-100
18 Louver-Side (Left & Right) 017471
19 Panel A.-Front X33237
20 Adaptor A.-Caster X18915
5
Model 754
Item Description Part No.
1 Cover A.-Hopper X38458
2 Gasket-Hopper Cover 038474
3 Tube A.-Feed X29429-2
4 Panel-Rear 053782
5 Panel-Upper Side Right 028823
6 Panel A.-Side Lower Right X46448
7 Panel-Service 046584
8 Shield-Splash 022766
9 Tray-Drip 014533
10 Caster-Swivel 018794
Item Description Part No.
11 Panel-Upper Side Left 028822
12 Stud-Nose Cone 022822
13 Panel A.-Side Lower Left X46447
14 Louver-Side (Left & Right) 017471
15 O-Ring-.643 OD x .077 W 018572
16 O-Ring-3/8 OD x .070 W 016137
17 Orifice 022465-100
18 Pan-Drip 17-1/4” Long 027504
19 Panel A.-Front X32956
20 Adaptor A.-Caster X18915
6
Models 750, 751, 754, 774, 794Operator Parts Identification
Model 774
Item Description Part No.
1 Cover A.-Hopper X38458
2 Gasket-Hopper Cover 038474
3 Tube A.-Feed X29429-2
4 Panel-Upper Rear X42574
5 Panel-Upper Side Right 028823
6 Panel A.-Side Lower-Right X46448
7 Panel-Service 047077
8 Shield-Splash 022766
9 Tray-Drip 014533
10 Caster-Swivel 018794
11 Panel-Upper Side Left 028822
12 Pan-Drip 17-1/4” Long 027504
13 Lid with Ladle 1 oz. 036575
Models 750, 751, 754, 774, 794 Operator Parts Identification
Item Description Part No.
14 Pump A.-Syrup-Tan 053794--TAN
15 O-Ring-.643 OD x .077 W 018572
16 Panel A.-Side Lower-Left X46447
17 Jar-Syrup-Plastic 036573
18 Jar-Syrup-Stainless-Shallow 036574
19 Stud-Nose Cone 022822
20 Louver-Side (Left & Right) 017471
21 Panel-Lower Rear 053837
22 O-Ring-3/8 OD x .070 W 016137
23 Orifice 022465-100
24 Panel A.-Front X42539
25 Adaptor A.-Caster X18915
7
Model 774 Topping Pump (053794--)
ITEM DESCRIPTION PART NO.
1 Knob-Plunger-Tan 032762-TAN
1 Knob-Plunger-Brown 032762-BRN
1 Knob-Plunger-Red 032762-RED
2 O-Ring-9/16 OD x .103 W 016369
3 Nut-Plunger 036577
4 Collar-Gaging 1/2 Ounce 035514
5 Tube-Plunger 032757
6 Insert-Plunger 032758
7 Spring-Plunger 032761
8 Washer-Nylon 032760
9 Plunger 036578
10 Seal Assembly X33057
10a O-Ring-13/16OD x .103 W 019330
11 Body-Syrup Pump 047934
12 Nut -Spout 036821
13 Lid -Pump 036822
14 Tube-Discharge 050912
15 O-Ring-1-5/16 OD x .103 W 048149
16 O-Ring-1 OD x .103W 048148
17 Kit-Valve-Captured Ball Shallow 048166 -001
Includes:
1 -Body A.-Pump Valve
1 -O-Ring-1-5/16 OD x .103W (048149)
1 -Brush-cleaning(054068)
1 -Instruction Sheet-Installation/Cleaning
8
Models 750, 751, 754, 774, 794Operator Parts Identification
Model 794
Item Description Part No.
1 Cover-Hopper 14 Qt. Grey 041682-GRY
2 Pan-Drip 19-1/2 Long 035034
3 Tube A.-Feed X29429-2
4 Panel-Rear 041855
5 Panel-Upper Side (Left & Right) 024426
6 Panel A.-Side Lower Right X46448
7 Panel-Service 041856
8 Shield-Splash 022765
9 Tray-Drip 020157
Models 750, 751, 754, 774, 794 Operator Parts Identification
Item Description Part No.
10 Caster 018794
11 Panel A.-Side Lower Left X46447
12 Louver-Side (Left & Right) 017471
13 Stud-Nose Cone 022822
14 O-Ring-3/8 OD x .070 W 016137
15 O-Ring-.643 OD x .077 W 018572
16 Orifice 024465-100
17 Panel A.-Front X41820
18 Adaptor A.-Caster X18915
9
Models 750 & 751 Single Spout Door and Beater Assembly
ITEM DESCRIPTION PART NO.
1 HANDLE A.-DRAW X55096
1a DRAW HANDLE 028804
1b SCREW-ADJUST 055092
1c O-RING 1/4OD X .070W 015872
1d NUT-JAM 029639-BLK
2 NUT-STUD FLAT LONG 021508
3 DOOR A.-1-SPOUT X51531-10
4 VALVE A.-DRAW X18303
5 O-RING 7/8OD X .070W 014402
6 CAP-DESIGN 014218
ITEM DESCRIPTION PART NO.
7 O-RING 5/16OD X .070W 016272
8 PLUG-PRIME 028805
9 O-RING-PRIMEPLUG 016137
10 PIN A.- PIVOT X22820
11 GASKET-DOOR HT 4” 048926
12 BLADE- SCRAPER 035174
13 BEATER A.- HELICORE X31761
14 BEARING-FRONT 050216
15 SHAFT-BEATER 032564
16 SEAL-DRIVE SHAFT 032560
10
Models 750, 751, 754, 774, 794Operator Parts Identification
Models 754, 774 & 794 Three Spout Door and Beater Assembly
Item Description Part No.
1 Handle A.-Draw X55096
1a Draw Handle 028804
1b Screw-Adjustment 055092
1c O-Ring 1/4 OD x .070 W 015872
1d Nut--Jam 029639-- BLK
2 Nut-Stud Long 034382
3 Nut-Stud Short 034383
4 Val ve A.- Dra w X18303
5 O-Ring 7/8 OD x .070 W 014402
6 Shaft-Beater 032564
Models 750, 751, 754, 774, 794 Operator Parts Identification
Item Description Part No.
7 Seal-Drive Shaft 032560
8 Cap-Design 014218
9 Decal-Door 021521
10 Door A.-3 Spout X51532-12
11 Rod A.-Pivot X20683
12 O-Ring 5/16 OD x .070 W 016272
13 Gasket-Door HT 4” 048926
14 Bearing-Front 050216
15 Beater A.-Helicore X31761
16 Blade-Scraper 035174
11
Section 5 Important: To the Operator
750/751
754/774/794
ITEM DESCRIPTION
1 MIX LOW INDICATOR LIGHT
2 MIX REFRIGERATION KEY
3 STANDBY KEY
4 WASH KEY
5 AUTO KEY
6 POWER ON/OFF (TOGGLE)
7 RESET BUTTON
Symbol Definitions
To better communicate in the International arena, the
words on many of our operator switches and keys have
been replaced with symbols to indicate their functions.
Your Taylor equipment is designed with these
International symbols.
12
Models 750, 751, 754, 774, 794Important: To the Operator
The following chart identifies the symbol definitions.
=OFF
=ON
=MIX
= STANDBY
= WASH
STANDBY Key
The Separate Hopper Refrigeration System (SHR)
and the Cylinder Temperature Retention System
(CTR) are standard features on these machines. The
SHR incorporates the use of a separate small
refrigeration system to maintain the mix in the hopper
below 40_(4.4_C) to assure bacteria control. The CTR
works with the SHR to maintain a good quality product.
During long “No Sale” periods, it is necessary to warm
the product in the freezing cylinder to approximately
35_Fto40_F(1.7_Cto4.4_C) to prevent overbeating
and product breakdown.
=AUTO
Power Switch
When placed in the ON position, the power switch
allows SOFTECH control panel operation.
MIX LOW Indicator Light
Located on the front of the machine is a mix level
indicating light. When the light is flashing, it indicates
that the mix hopper has a low supply of mix and should
be refilled as soon as possible. Always maintain at
least 3” (7.6 cm) of mix in the hopper. If you neglect to
add mix, a freeze-up may occur. This will cause
eventual damage to the beater, blades, drive shaft,
and freezer door.
To activate the SHR and CTR, press the STANDBY
key. Remove the air orifice and place the air tube (end
without the hole) into the mix inlet hole.
When the STANDBY key is pressed, the light comes
on, indicating the CTR (Cylinder Temperature
Retention System) has been activated. In the
STANDBY mode, the WASH and AUTO functions are
automatically cancelled. The MIX REF function is
automatically locked in to maintain the mix in the
hopper.
To resume normal operation, press the AUTO key.
When the unit cycles off, the product in the freezing
cylinder will be at serving viscosity. At this time, place
the air tube (end with the hole) into the mix inlet hole
and install the air orifice.
WASH Key
When the WASH key is pressed, the light comes on.
This indicates beater motor operation. The STANDBY
or AUTO modes must be cancelled first to activate the
WASH mode.
AUTO Key
MIX REF Key
When the MIX REF key is pressed, the light comes on
indicating the mix hopper refrigeration system is
operating. For the Models 754, 774, and 794 the MIX
REF is controlled by the left side of the freezer as
viewed from the operator end. The MIX REF function
cannot be cancelled unless the AUTO or STANDBY
modes are cancelled first.
Models 750, 751, 754, 774, 794 Important: To the Operator
When the AUTO key is pressed, the light comes on.
This indicates that the main refrigeration system has
been activated. In the AUTO mode, the WASH or
STANDBY functions are automatically cancelled. The
MIX REF function is automatically locked in to
maintain the mix in the mix hopper.
Note: An indicating light and an audible tone will
sound whenever a mode of operation has been
pressed. To cancel any function, press the key again.
The light and mode of operation will shut off.
13
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