Univex SRM3O+ User manual

nivexExacting Standards, Just Like Yours, sirce 1948
SRM3O+
Swing Ring Series
SRM3O+ PLANETARY MIXER
Maintenance & Parts Manual
Persons under the age of 18 are not permitted to operate or have
accessibility to operate this equipment per U.S. Dept. of Labor Employment
Standards Administration Fact Sheet No. ESA91-3.
UNIVEX CORPORATION - 3 Old Rockingham Road - Salem, NH 03079-2140 - Tel [phone] - Fax [phone]
Int'l Tel [phone] - Int'l Fax [phone] - Website www.univexcorp.com - E-mail [email protected]
ED5 SRM3O+/0304 Printed in USA
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UNIVEX CORPORATION -3 Old Rockingham Road -Salem, NH 03079-2140 –Tel [phone] –Fax [phone]
Int’l Tel [phone] –Int’l Fax [phone] –Website www.univexcorp.com -E-mail [email protected]
ED5 SRM30+/0304 Printed in USA
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Sw wi in ng g R Ri in ng g S Se er ri ie es s
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SR RM M3 30 0+ + P PL LA AN NE ET TA AR RY Y M MI IX XE ER R
Persons under the age of 18 are not permitted to operate or have
accessibility to operate this equipment per U.S. Dept. of Labor Employment
Standards Administration Fact Sheet No. ESA91-3.
SRM30+
S
SR RM M3 30 0+ +
Maintenance & Parts Manual
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SRM3Q+
Welcome to Univex
Thank you for purchasing this Univex product.
Your new SRIvI3O+ Mixer has been designed with advanced performance and
safely features that make it an excellent addition to your food preparation
equipment. Like all Univex mixers, slicers, meat grinders and accessories, this
mixer is engineered to provide years of reliable service
If you have any questions concerning the operation qf this unit, or if we can be
offurther assistance, please call our Customer Service Department.
Univex Customer Service:
USA & Canada 800-256-6358 International 603-893-6191
Safety ¡s our Tqp Priority
READ AND MAKE SURE THAT YOU UNDERSTAND THE
INSTRUCTIONS AND SAFETY WARNINGS IN THIS BOOKLET BEFORE
ATTEMPTING TO OPERATE THE MIXER OR ATTACHMENTS.
NEVER PUT FINGERS OR HANDS IN THE BOWL WHILE THE MIXER IS
OPERATING OR SERIOUS INJURY COULD RESULT.
NEVER ATTEMPT TO CLEAR A JAMMED ATTACHMENT OR
STALLED MIXER WITHOUT SHUTTING THE POWER OFF.
DISCONNECT THE ELECTRICAL PLUG FROM ELECTRICAL OUTLET.
ALWAYS REPLACE THE POWER TAKE-OFF (PTO) CAP WHEN
ATTACHMENTS ARE NOT IN USE.
DO NOT OPERATE THIS MIXER WITHOUT THE BOWL IN PLACE
WARRANTY
The Univex SRM3O+ Mixer is warranted by Univex Corporation against defectsin materials and
workmanship for a period of one year from date of delivery if delivered to a destination in the United
States or Canada.
Contact Univex Customer Service to report any warranty claim. Univex shall not be liable for any
consequential, compensatory, incidental, or special damages. damages incurred in transit or from
installation error, accident, alteration, or misuse are not covered. Transit damages should be reported to
the carrier immediately.
If the SR.M30+ Mixer is delivered to a country other then the United States or Canada, it is warranted
by Univex's authorized distributor. Contact your distributor directly to report anywarranty claims
outside of the United States or Canada.
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SRM3O-
TABLE OF CONTENTS
DESCRIPTION PAGE
WARRANTY I
TABLE OF CONTENTS, LIST OF ILLUSTRATIONS 2
CHOOSING THE RIGHT LOCATION FOR YOUR NEW MIXER 3
USER-FRIENDLY SWING RING'TM SAFETY GUARD 3 & 4
OPERATING THE SRM3O+ MIXER 4 - 6
USING THE POWER TAKE-OFF (PTO) 6
TABLE OF MIXING CAPACITIES & RECOMMENDED AGITATOR 7
BATTERS, AGITATORS, BOWLS, & ACCESSORIES 8
CLEANING YOUR MIXER 10
OPERATOR'S PREVENTIVE MAINTENANCE lo
TROUBLE SHOOTING GUIDE li & 12
REMOVAL OF TOP COVER 13
MECHANICS MAINTENANCE 13 & 14
REPAIR INSTRUCTIONS 15 - 19
REPLACEMENT PARTS, LISTS 20 - 31
WIRING DIAGRAMS 32 -34
LIST OF ILLUSTRATIONS
ILLUSTRATION PAGE
FIGURE 1OVERALL VIEW OF MIXER 9
FIGURE 2 LUBRICATION INSTRUCTIONS 14
FIGURE 3 TRANSMISSION 20
FIGURE 4 BEATER HEAD ASSEMBLY 21
FIGURE 5POWER TAKE OFF ASSEMBLY 22
FIGURE 6 INPUT ASSEMBLY 23
FIGURE 7 VERTICAL SHAFT ASSEMBLY 24
FIGURE 8 BOWL LIFT ASSEMBLY 25
FIGURE 9 BOWL SUPPORT ASSEMBLY 26
FIGURE 10 SPEED CONTROL ASSEMBLY 27
FIGURE 11 VARI-SPEED AND DRIVE SYSTEM 28 - 29
FIGURE 12 HOUSING ASSEMBLY 30 - 31
FIGURE 13A WIRING DIAGRAM 115/208-240 V, 60HZ, 1PH,
220-240V, 50HZ, 1PH, 100V, 50/60HZ, 1PH 32
FIGURE 13B WIRING DIAGRAM 380-400 V, 50HZ, 3PH, 460V, 60HZ, 3PH 33
FIGURE 13C WIRING DIAGRAM 208-240 V, 60HZ, 3PH,
220-240 V, 50HZ, 3PH 34
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SRM3O+
CHOOSING THE RIGHT LOCATION FOR YOUR NEW MIXER.
When selecting the best location for the mixer, it is helpful to consider the following:
Where is the best location for the operator, both for saving steps and easy
viewing?
Is this a good location for product flow as in:
Easy to get ingredients to the mixer?
Destination of the mix after mixing?
Is there existing electrical service at this location?
Does this location provide easy access for cleaning and service?
Check to be sure that your mixer with attachments does not extend out
into heavy traffic areas,
If stands and/or portable equipment are used along side of your mixer,
can they be moved easily to and from your mixer?
The chrome cap plugs included in your manual package are supplied to
cap shipping bolt holes (Fig. 1 [16]) in mixer base if base is not anchored.
If unit is not provided with a plug, then the unit is to befitted with a primary disconnect
device that has a contact separation of at least 3mm in all poles.
IMPORTANT ELECTRICAL SERVICE INFORMATION
Electrical wiring instructions are found in the wiring diagram (Figures 13A thru 13C). Before making
electrical connections, CHECK the specifications on the nameplate to make sure that they agree with
those on your electric service.
USER-FRIENDLY SWING RING'TM SAFETY GUARD
Your SRM3O+ Mixer features a newly updated, 2-part safety guard. The Swing Ringan Safety Guard
ring is easily be removed and installed, as well as dishwasher safe. It conveniently swings out of the way
without having to be remove to place or sample ingredients in the bowl. Only one side of the guard
needs to be open when adding ingredients. You'll fmd this two-piece design is easy to handle and fits
conveniently in your sink or dishwasher. lt also provides a clear view of the product throughout the
mixing cycle.
This mixer wifi not operate unless the Swing Ringan Safety Guard is properly engaged.
Metal tabs at the rear of the guard activate twin switches that enable the mixer to run only when the
guard is securely closed. These switches protect against accidental operation of the mixer when the
safety guard is open or removed from the mixer. The mixer will automatically stop if the guard is open.
Additional switches in the bowl slide mechanism automatically stop the mixer if the bowl is lowered
from the "up" (mixing) position.
To Install the Swing Ringan Safety Guard, insert the pointed end of the rod at the rear of the guard into
the lower mounting bracket on the mixer housing. Then insert the top end of the rod into the upper
bracket by aligning the groove in the rod with the slot in the bracket. Press the rod in and allow itto drop
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SRM30-
down into position. Repeat this for each of the two sections of the guard. Swing the two halves of the
guard forward. When the guard is properly closed, the switches are now activated and the mixer can be
operated.
To remove the guard, simply reverse the installation procedure. Grip the two halves of the guard and
pull it open. Use an upward motion to release each half of the guard from the bracket on the machine
body.
To open the guard for access to the bowl, first turn the mixer off by pushing the red stop button
(Fig.i El 3]). Pull open the two halves of the guard and swing one or both outward. It is not necessary to
remove them, Close the guard to resume mixing operations.
OPERATING THE SRM3O+ MIXER
Your Univex Mixer is designed to meet the cook's and Baker's demand for an efficient, dependable
appliance. It should give unfailing performance over a period of years when operated and maintained
according to the instructions contained herein.
The mixer drives various agitator attachments through a beater head shaft to beat, mix, or whip liquid,
viscous, or dry ingredients. The shaft is driven by a study motor whose power is transmitted by a rugged,
cogged belt and a Continuously Variable Transmission (CVT) through a gear train and a planetary gear
set, The speed of the beater shaft can be varied from approximately 80 to 370 revolution per minute
(rpm). (See page 8 for part numbers of various agitators, attachments and accessories.)
The SRM30+ Mixer is equipped with a power take-off (PTO) that operates other attachments such as
slicers, graters and grinders. The PTO speed can be varied from 65 to 300 rpm Be sure to read and
follow any safety instructions provided by the manufacturers of attachjnent.s that you operate on
the PTO. The PTO hub should be covered with the PTO cap provided with your mixer when in use.
Warnlng---Never put hands, spoons, utensils or other objects into the bowl while the mixer Is
operating!
Note: Noise emissions are below 70db (A).
Securing the Bowl & Installing the Mixer Agitator.
Place the bowl on the bowl support (Fig. 1 [17]). The pin at the rear of the bowl must align with the
corresponding slot on the bowl support. Align the holes in the bowl mounting brackets over the pins on
the bowl support and lower the bowl into position. Secure the bowl by turning the bowl clamps (Fig. 1
[181).
With the bowl in the "down" position, install the desired agitator by sliding it upward onto the beater
shaft (Fig. 1 [1]). Rotate the agitator counter-clockwise until it is engaged.
Safety Note Serious injury may result if the bowl is not fully secured to the bowl support using the
bowl support pins and firmly closing the clamps.
With the bowl secured, add ingredients. Liquids should be added first. The bowl is now ready to be
raised to the "up" (mixing) position by turning the bowl lift handle (Fig. l[14]) clockwise.
When using the wire whip agitator, raise the bowl to the "up" position first and then add ingredients to
avoid wire whip damage.
Secure and close the Swing Ring" Safety Guard before proceeding.
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SRM30+
Using the Bowl Lift
The mixer will not operate unless the bowl is in the "up "position. Raise the bowl by turning the bowl
lilt handle (Fig. 1 [14]) clockwise. To lower the bowl, turn the handle counter-clockwise. it is necessary
to lower the bowl to change the agitator. This also makes the bowl accessible for filling
Setting the Timer - Start/Stop Controls
This mixer will not operate unless the timer has been set to a specified number of minutes or set in the
"HOLD" position. To start the mixer, first turn the timer dial (Fig. 1 [8])to the desired mixing time.
Then push the start button (Fig. 1 [12]). The mixer will automatically stop when the tinier reaches "0".
To stop mixing before the timer reaches "0", push the red stop button (Fig. 1 [13]).
The timer may be set for up to 15 minutes of mixing, or maybe set to the "HOLD" position for
continuous operation. When setting a time of less then 5 minutes, turn the dial beyond 5 minutes and
then return it to the desired time.
Safety Note The mixer will start only when the Swing RingTMSa.fety Guard is engaged and the bowl is
in the raised position. Do not operate the mixer without the bowl in place.
Manual Stop Button
For safety and operational ease, this mixer is equipped with a stop button (Fig.l [13]) that has an
oversized, red mushroom-style cap.
Safety Note Although the motor shuts off instantly when the Swing RingTM Safety Guard is opened, or
the bowl is lowered, or the stop button is pushed, the agitator may not come to complete rest for several
revolutions. Do not put hands or utensils into bowl or near the beater shaft until it is stopped.
Both the start button and stop button are momentary contact type. They provide low voltage protection
and prevent accidental start-up in the event of power interruption.
Vail-Speed Control
A major advantage of Univex mixers is their Continuously Variable Transmission (CVT). Unlike other
mixers, CVT lets you change speed while the mixer is running. Change speed by moving the speed
control lever (Fig. 1 [9]) to the desired level. The speed indicator (Fig. 1 [10]) shows four speeds.
-Numerous intermediate speeds give the Cook or Backer tremendous flexibility.
Use speed i (slow) for heavy mixtures like pizza, bread or roll dough. Speed I should also be used with
the Meat and Food Chopper attachment. For most mixing tasks, start on speed i and progress to higher
speeds as needed. Use high speeds for wipping cream, beating eggs, and thin batter. To avoid damaging
your mixer, follow the speed, volume limits and attachments recommendations shown in the
Table of Mixing Capacities on page 7.
If you notice any slippage during mixing, the mixer may be overloaded. Reduce the load, or reduce
speed until mixing action is smooth. Refer to the Trouble- Shooting Guide on page 11 & 12.
if the mixer jams and the motor stalls, immediately press the stop button. Take necessary steps to reduce
the load. Never put hands in the bowl to clear a jam.
Note Always return to speed i before shutting off the mixer. Do not move the speed control lever
when the mixer is not running, because this will cause belt to become loose and the mixer will not
operate properly.
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SRM3O±
1f the mixer has been shut off by the timer, or stop button in speed 2, 3 or 4, follow these steps to
avoid belt slippage or Jerky start: Empty the bowl. Set the timer to 'HOLD". Press the start button.
As the mixer begins to operate, move the speed control lever back to speed 1. Press the stop button.
Retum to "0". Your mixer is now ready for it's next task.
Using the Ingredients Chute
The ingredients chute provided with your mixer enables you to add ingredients to the bowl while the
mixer is running, and without opening or removing the Swing RingTM Safety Guard. The chute may be
installed on the front or side of either half of the guard. See below. Once the chute is properly installed,
it can remain in place permanently, if desired.
Ingredients Chute Installation
Slide the bottom of the chute between horizontal safety guard rings and engage
the chute onto the safety guard.
Using Smaller Bowl
For maximum flexibility, an alternative 20 quart bowl is available for use on your SRM3O+ Mixer.
Specially sized agitators must be used. See page 8 for part numbers.
Splash/Extension Ring
A splash/extension ring (page 8 [j]) mounted to the bowl helps confine ingredients during the mixing of
certain recipes. The ring should never be used to overload a mixer beyond its recommended capacity.
Consult the Table of Mixing Capacities on page 7 when you are unsure of appropriate loads.
USING THE POWER TAKE-OFF (PTO)
The power takeoff hub (Fig. 1 [5]) accommodates 12 tapered attachments such as a Vegetable Slicer
and Shredder, or a Meat and Food Chopper. The mixer's speed control lever also controls the PTO drive
speed.
Before installing attachments, turn the mixer off. Remove the PTO cap and loosen the thumb screw (Fig.
1 [6]) on the PTO hub. Insert the attachment with a slight twist until firmly in place. Tighten the thumb
screw. Be sure to read and follow any safety instructions provided for attachments that you
operate on the PTO.
Safety Notes
When grinding meat, chopper attaclunents must never run faster then speed 1. For vegetables.
attachments may run at higher speed.
Always turn the mixer off to install or remove attachments.
Always return to speed 1 before shutting off mixer.
Cover the PTO hub with the PTO cap when not in use.
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SRM3O+
Table of Mixing Capacities & Recoimnended Agitators
ÑOTES: Recommended speeds are for the capacities listed. For larger capacities, reuuc
speed. Dough capacity, whether for bread, rolls, pizza, bagels or doughnuts, is
based on 12% flour moisture and 70°F (2 1°C) water temperature Reduce
capacity if cold water is used. If higher gluten flour is used, reduce total
capacity by 10%.
AR% (Absorption Ratio) = the weight of the water divided bythe
weight of the flour.
The lower the AR% the stiffer and more difficult the dough is to mix.
A.R% below 40% will reduce total capacity.
1 gallon of water = 8.3 Ib. (1 liter of water = 2.2lb)
Page 7
MODEL
Bowl Capacity
Attachment Hub Size
Motor
SRM3O+
36 qt 34 L
#12lhp
Kitchen Capacities (single
batches)
Mashed potatoes
Whipping cream
Mayonnaise
Egg whites
Meringue
Waffle or pancake batter
Agitator(s)
Batter beater, 4-wing beater
Wire whip, 4-wing beater
Batter beater, wire whip,
4-wing beater
Wire whip
Wire whip
Batter beater
23 lb 10.5 kg
6 qt 5.7 L
12 ql (oil) 11.4 L (oil)
I 1\2 ql 1.4 L
1 qt (water) 0.9 L (water)
12 qt 11 .4L
Bakery Capacities (single
batches)
Pie dough
Cake
Sponge cake batter
Angle food batter (8-10 oz
cake)
Marshmallow icing
Fondant icing
Shortening & sugar creamed
Egg & sugar for sponge cake
Use only speed 1 for:
Pizza dough
thin, 40% AR
medium, 50% AR
thick,60%AR
Use speed 1 or 2 for:
Raised doughnut dough
65%AR
Bread/roll dough
heavy, 55%AR
light to med., 60% AR
Agitator(s)
Pastryknife
Batter beater, 4-wing beater
Wire whip, 4-wing beater
Wire whip, 4-wing beater
4-wing beater
Batter beater
Batter beater
Batter beater, 4-wing beater
Dough hook
Dough hook
Doughhook
Doughhook
Doughhook
Dough hook
271b 12.3 kg
30 lb 13.7 kg
18 lb 8.2 kg
22 cakes 22 cakes
3 Ib 1.4 kg
18 Ib 8.2 kg
24 lb 10.9 kg
12 Ib 5.5 kg
14 Ib 6.4 kg
20 Ib 9.1 kg
401b 18.2kg
l5Ib 6.8kg
301b 13.7kg
45 lb 20.5 kg
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Beaters. Agitators, Bowls, & Accessories
Available for the SRM3O+ Mixer
Part numbers (size in auarts
SRM3O
Page 8
A. Batter Beater
1033107 (30)
Optional
1030108 (20for30)
F. Sweet Dough Beater
Optional
1030098 (30)
2030195 (20 for 30) *
B. Wire Whip
1030111 (30)
Optional
1030226 (2Ofor3O)
r:î G, Bowl1035023 (30)
1,f'
Optional
1035024 (2Ofor3O)
C. Dough Hook
1033225 (30)
Optional
1030224 (2Ofor3O)
H. Vegetable Slicer/Grater
Optional
VS9 Slicer 1000950
VS9H Grater 1001050
D. Pastry Knife
Optional
1030227 (30)
1030321 (2Ofor3O)
IMeat & Food Chopper
Optional
MFC12 1000550
E. Four Wing Beater
Optional
1030101 (30)
1030102 (2Ofor3O)
J. Splash/Extension Ring
Optional
1061299 (30)
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SRM3O--
OVERALL VIEW OF FOOD MIXER
FIGURE 1
1. 12.
BEATER SHAFT START BUTTON
2. CHUTE 1000541 13. STOP BUTTON
3. SAFETY RING ASSEMBLY 14. BOWL LIFT HANDLE
1030041 RIGHT, 1030042 LEFT
4. MAGNET 15. REAR ACCESS PANEL
5. NO. 12 HUB 16. CAP (COVERS SHIPPING BOLT HOLE)
6. THUMB SCREW 17. BOWL SUPPORT
7. UPPER MOUNTING BRACKET 18. BOWL CLAMP
8. TIMER 19. BOWL
9. SPEED CONTROL LEVER 20. BOWL SUPPORT PIN
10. SPEED INDICATOR LABEL 21. BOWL MOUNTING BRACKET
11. CORD 22. LOWER MOUNTING BRACKET
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SRM3ft-
CLEANING YOUR MIXER
Consistent use of the following procedures will ensure that your mixer is in optimum
conditi on.
uWarning - Disconnect electric power supply before cleaning.
Wash the body of the mixer, the bowl support. and beater shaft with warm water and
mild soap,
Avoid excess water in the area of the safety switch that protrude from the housing
where the Swing RingTM Safety Guard is mounted.
Do not rinse with a hose.
Do not use abrasive pads.
Dry the mixer thoroughly using a soft cloth.
Wash the bowl and beater immediately after use. If egg mixtures or flour hatter have
been used, rinse the bowl and batter with cold water before washing with hot water.
Wash the Swing RingTM Safety Guard in the same manner, or in your dishwasher.
Dry bowls, agitators and safety guard thoroughly.
OPERATOR'S PREVENTIVE MAINTENANCE
For best long-term performance, operators should follow these simple practices.
Lightly lubricate the beater shaft (Fig. 1 [l}) after washing. Petro-Gel or equivalent
food grade lubricant should be used.
uDo not cover the unit with a plastic bag, as this traps humidity inyour mixer.
If the electrical supply cord is damaged, it must be replaced bya special cord or
assembly
available from Univex directly or from a Univex service agent.
Do not overload the mixer. Overloading is the #1 cause of mixer failure, Follow
the Table of Mixing Capacities on page 7. It may be helpful to post a copy of this
table adjacent to the mixer.
Keep the mixer properly lubricated. Lack of lubrication is 2 cause of mixer
failure. Key mixer components require lubrication after each 500 hours of operation.
(Instructions on frequency and method of lubricating are on page 14).
Only change speed with the mixer running. Changing speed with mixer off will cause belts to
loosen, and the mixer will not turn (see Trouble-Shooting Guide onpage 11 & 12). Return to
speed 1 before shutting the mixer off. Use the procedure describedon page 6 to return the mixer to
speed i if mixer is shut off in a higher speed.
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Page 11
SRM3O±
SRM3O+ TROUBLESHOOTING GUIDE
TROUBLE POSSIBLE CAUSE REMEDY
Mixer will not
operate. 1. 1 Timer not turned on.
1.2 Burned switch contacts
1.3 Electrical service down.
1.4 Motor capacitor defective.
(1 HP Only)
1.5 Burned out motor.
1.6 Magnetic starter tripped
due to overload
1.7 SAFETY RING not
mounted and closed.
1.8 Bowl not raised,
ii Turn timer on.
1.2 Replace. *
1.3 Check electrical service.
Replace fuse or reset
circuit breaker if necessary.
1.4 Replace. *
1.5 Remove, test, repair or
replace. *
1.6 Wait several minutes and
push start button
1.7 Install SAFETY RING.
1.8 Raise bowl conwletelv
2. Mixer runs but
agitator will not
turn,
2,1 Drive belt off pulley
2.2 Key or Pin sheared on input
shaft, input gear, bevel
pinion, bevel gear, vertical
shaft or beater shaft.
2.3 Shifting speed with mixer
not running.
2.1 Reinstall drive belt on
motor pulley and adjust
mount center distance. *
2.2 Locate by step inspection
and replace defective part.*
2.3 With mixer running, slowly
move speed control lever
slowly fully forward then
backward to re-engage belt
3. Agitator stalls
during mixing 3.1 Mixer bowl is overloaded
3.2 Speed is set too high for the mix
3.3 Loose belt
3.4 Contamination of belt with
grease
3. 1 Adjust contents of bowl per
Mixing Capacities Table
3.2 Shift speed lower till action
rotates smoothly
3.3 Readjust pulley center distance
to tighten belt. *
3.4 Clean pulleys and replace belt *
4. Speeds do not
change properly 4.1 Loose belts.
4.2 Van-Speed pulley
inoperative
4.1 Tighten or replace belts. *
4.2 Remove, clean & lubricate,
or replace. *
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Mixer runs, but
repeatedly cuts
out and stops
5.1 Bowl overloaded
5.2 Speed is set too high for
the mix
5.3 Service voltage too low or
fluctuating
5.4 Starter improperly set
5.1 Adjust contents of bowl
per Mixing Capacities
Table
5.2 Reduce speed
5.3 Check electrical voltage. *
5.4 Adjust amp setting on
starter. *
Attachments
contact bottom
of bowl.
6.1 Dented bowl.
6.2 Bowl height is set too high
Attachments
contact side of
bowl
Excessive
noise.
7.1 Dented bowl
7.2 Insufficient clearance
between bottom of howl and
beater.
8.1 Gears need to he repacked
with grease.
8.2 Badly worn or frayed drive
belts.
8.3 Attachments hitting bowl
8.4 Overloaded mixing bowl
7.1 Remove dents or replace bowl
7.2 Adjust bowl height. *
8.1 Locate source by
inspection and repack
with grease. *
8.2 Replace belts. *
8.3 Inspect for cause in items
6 and 7 above.
8.4 Adjust contents of bowl
per Mixing Capacities
Table
6.1 Remove dent or replace
howl.
6.2 Reset bowl height. *
*Remedies designated with a *require the services of an authorized service agent.
Page 12
SRM3O
SRM3O+ TROUBLESHOOTING GUIDE (CONT'D).
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SRM3O+
REMOVAL OF TOP COVER
The top cover (Fig. 12 [17]) must be removed in order to perform the maintenance
operations. It is secured by a spring clip at its front end and a screw at its
rearward end. First, DISCONNECT THE ELECTRICAL POWER FOR
SAFETY. Then, remove the screw in the rear (Fig. 12 [21]), lift rear of cover,
push forward about 3 inches and lift cover off.
Reinstall in reverse procedure using care to insure that the cover sits squarely and
uniformly on the mìxer housing.
MECHANICS MAINTENANCE
Every six months a mechanic should perform the following inspection and maìntenance as
required:
i. BELTS
WARNING: Start mixer and adjust speed control (Fig. I [9]) to speed 4. Stop
mixer. FOR SAFETY, DISCONNECT POWER.
Remove top cover (Fig. 12 [17]) and rear access panel (Fig. 12 [24]).
Check belts (Fig. 11 [11 & 22]). If broken, glazed or worn, replace.
Check belt (Fig. 11 [11]) for proper tension. The outer edge of the belt should be
flush with the outer diameter of the variable speed pulley (Fig. il [10]). If not,
adjust by loosening the Jam Nut (Fig. 10 [15]) and turning the connecting rod
(Fig. 10 [14]) until the outer edge of belt is flush with the outer diameter of the
pulley. Retighten Jam Nut.
WARNING: Plug machine in. start mixer, and adjust speed control to speed 1.
Stop mixer. FOR SAFETY, DISCONNECT POWER.
Check belt (Fig. 11 [22]) for proper tension. The outer edge of the belt should be
flush with the outer diameter of the variable speed pulley (Fig. li [10]). If not,
adjust by loosening nuts (Fig. Il [14]), holding motor (Fig. 11 [29]), raise or
lower the motor until the outer edge of belt is flush with the outer diameter of
pulley. Retighten Nuts.
MOTORCheck motor (Fig. Il [29]) for overheating, noise and excessive end play. Replace
if defective.
BOWL LIFT ADJUSTMENT (Fig. 8 and 9)
Place 30 qt. mixing bowl on bowl support (Fig. 1 [17]) and 30 qt. batter beater on
beater shaft (Fig. 1 [1]).
Raise bowl support to the high position.
Check clearance between bottom of bowl and lowest point of batter beater.
Clearance should be 3/16 inch. plus or minus 1/16 inch.
If adjustment is required, disconnect power, loosen lock nut (Fig. 8 [10]) and turn
linkage rod (Fig. 8 [9]) until desired clearance is obtained. Retighten lock nut.
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Bowl Lift
Slide
Page 14
OIL YEARLY.
MEDIUM (NO. 30)
MACHINE OIL.
GREASE EVERY 500
HOURS OF MIXING TIME
KEYSTONE
NEVASTANE SF7
SRM3O+
4. LUBRICATION
The lubrication instructions are in Fig. 2. Motors have pre-lubricated bearings with a
service interval often years. The transmission and beater head gearing are packed with
Nevastane 5p7 grease. They must be repacked every 500 hours of mixing time.
WARNING: NEVER WORK ON THE TRANSMISSION WITH THE MIXER
RUNNING. IT IS RECOMMENDED THAT THE ELECTRICAL SERVICE
BE DISCONNECTED TO PREVENT ACCIDENTAL START UP.
LUBRICATION INSTRUCTIONS
FIGURE 2
GREASE YEARLY
MOLYKOTE BR2 PLUS.
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Page 15
SRM3O+
REPAIR INSTRUCTIONS
(including disassembly, replacement and reassembly)
TRANSMISSION (Fig. 3)
Removal
WARNING: DISCONNECT POWER FOR SAFETY.
Remove housing top cover (Fig. 12 [17]).
3, Adjust speed control to low speed, then back to high speed, remove upper
retainer bracket (Fig. 11 [16]), and upper V-belt (Fig. 11 [11]) from
transmission drive pulley (Fig. 11 [12]). Remove drive pulley.
Caution: Transmission assembly is heavy and must be supported prior to
removing. Remove four cap screws (Fig. 3 [10]) securing transmission housing
to mixer housing. Remove transmission assembly and place on work bench.
Remove transmission cover (Fig. 3 [2]) by removing four screws (Fig. 3 [3])
and sliding towards the rear and lifting up.
Rotate gear train by hand and inspect for worn or chipped gears, bent shafts,
worn bearings and excessive back lash; removal of grease may be necessary.
Back lash measured at gear teeth exceeding 1/32" is considered excessive.
After trouble has been isolated, proceed to disassemble.
Disassembly
1. Beater Head Assembly (Fig. 4)
NOTE: If a gear requires replacement. always replace it's mating gear.
Remove cap screw, left hand thread, (Fig. 4 [12]) and remove beater head
assembly using jacking screws (Fig. 4 [9]) if necessary.
Remove drive pin (Fig. 4 [1]), retaining rings (5), gear (6), key (3),
retaining ring (7), and press shaft (2) and bearings (4) from housing (10).
e. Press bearings (4) along with spacer (8) from shaft (2)
2. Power-Take-Off Assembly (Fig. 5)
Remove three cap screws (Fig. 5 [8 & 21]), washer (6 & 7), deflector (5)
retaining ring (3), at gear (12) end of shaft. Withdraw the PTO assembly
from the transmission housing.
NOTE: Gear (12) must be removed during withdrawal of PTO assembly.
Slide retaining ring (3) and bevel gear (li) away from PTO housing (4).
Remove retaining ring (10) and adapter (2). Press shaft assembly from
housing (4).
Remove retaining rings (3), key (14 & 17). Press bearings (9) and gear (11)
from shaft (13).
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SRM3O+
3. Input Assembly (Fig. 6)
Remove screw (Fig 6 [11]) and washers (12 &13) to detach grease retainer
(14) from housing (S)
Remove two cap screws (Fig. 6 [10]) and remove input assembly from
transmission.
Remove retaining rings (1). gear (2), woodruff key (5). Press shaft (6) at
gear end with bearing (4) from housing (8).
Remove retaining rings (3) and press bearing (4) from housing (8).
Remove retaining ring (1) and press shaft (6) from bearing (4).
Note: Grease retainer can only be removed from gear box once the PTO
gear (Fig. 5 [12]) has been removed.
4. Vertical Shaft Assembly (Fig. 7)
Remove retaining ring (1) from shaft (5).
Drive shaft (5) and lower bearing (3) downward out of transmission
housing. A brass drift will be necessary to drive shaft (5) completely free
from transmission housing.
Lift bevel gear (2) and key (6) from transmission housing.
Remove retaining ring (4) and drive upper hearing (3) from transmission
housing.
Remove key (7) and press lower bearing (3) off shaft (5).
Reassembly
Clean all components, except bearings with safety approved cleaning
solvent. Inspect components for defects and replace those found to be
defective.
NOTE: All gears should be replaced as sets.
If shafts have become slightly scored during the disassembly process, polish
the shafts with fine machinists crocus cloth. Use care to avoid excessive
removal of shaft surface or proper fit of components will be lost.
e. Reassembly should be carried out in the reverse of the disassembly
procedure as follows.
Vertical shaft assembly.
PTO assembly except spur gear (Fig 5 [12]).
Place grease retainer (Fig 6 [14]) in place in transmission housing (Fig 3
[1]), then assemble gear (Fig 5 [12]) associated with PTO assembly, then
slide input housing assembly in place and finally attaching grease
retainer (Fig 6 [14]) back onto input housing (Fig 6 [8]) with screw (Fig
6 [11]). Attach input housing to transmission housing with screws (Fig 6
[10]). Page 16
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SRM30+
Transmission should be progressively checked for smooth operation while on
the workbench by hand turning each assembly as it ìs installed.
Lubrication of the transmission should be done following its installation on
the mixer. Apply Keystone Nevastane 5p7 grease to the spur gear and bevel
gear meshes. This may be simplified by feeding the grease into the rotating
gear meshes. Caution should be exercised to avoid entrapment of the
application implement in the gear teeth. Insure the deflector (Fig. 5 [5]) is
positioned to dynamically guide the lubrication into the bevel gear mesh.
BOWL SUPPORT ASSEMBLY: (Fig. 9)
WARNING: Disconnect electrical power for safety.
Remove housing top cover (Fig. 12 [17]) and rear access panel Fig. 12 [24)).
Remove four cap screws (Fig. 9 [18)) and remove bowl support (Fig. 9 [1)) and
slide cover (Fig. 9 [7]).
CAUTION: Bowl support must be held while screws are being removed in
order to prevent it from falling.
Reassembly is the reverse procedure.
SLIDE ASSEMBLY: (Fig. 9)
Carry out above disassembly procedure for removing bowl support.
Remove fixed slide cover (Fig. 12 [6]) by removing two nuts (Fig. 12 [5]).
Remove retaining ring (Fig. 9 [10]) from rod end pin (13). Withdraw pin (13)
from rod end (12).
Remove four Kep nuts (Fig. 9 [9]) and withdraw slide frame (8) from housing
studs.
Remove four cap screws (Fig. 9 [15]) and lift off gibbs (14). Remove slide
(20).
Clean and inspect sliding surfaces for excessive wear.
Replace parts showing excessive wear.
Lubricate sliding surfaces with grease.
Reassemble and reinstall in the reverse of the above procedure.
Check clearance between batter beater and bowl per Mechanics Maintenance
section 3 (ad) and readjust as necessary.
SPEED CONTROL ASSY (Fig. 10)
Disassembly
1. Remove housing cover (Fig. 12 [17]) and rear access panel (Fig. 12 [24]).
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SRM3O+
Loosen screw on collar (Fig. 10 [17]). Remove collar (17) rod end (l6 and O-ring
(Fig 11 [8]) from cam assembly (Fig. lO [11]). Loosen set screws (IO) in
cam assembly (11).
Drive roll pin (4) from hub (3) and pull hub (3), lever (2), and handle (1)
from cam assembly shaft (11). Remove washer (5) from cam assembly (11),
Unscrew handle (1) from lever (2). and lever (2) from hub (3).
Remove nut (8) and washer (7) from studs holding speed control hearing (6)
to housing (Fig. 12 [3]).
6, Withdraw bearing (6) and remaining assembly from housing (Fig. 12 [3]).
Pull cam assembly (11) from bearing (6).
Remove screws (20), lock washers (21), strap (22), and spring (19) from
bearing (6).
Remove screws (13) and detent disk (12).
Reassemble
10 Reassemble in reverse of above procedure. Grease cam assembly shaft (11)
and deterLt disk (12) during assembly with MolyKote BR2 Plus or general
purpose bearing grease. Adjust belt as described in Mechanics Maintenance
section 1 paragraph a,d-f.
NOTE: The detent disk (12) has a slight angle on the OD. Assemble with small
dia, of OD. toward the cam assembly (Il).
11 If speed control handle (1) moves while the mixer is running, tighten set
screws (10) against spring washer (9) until movement stops.
VARI-SPEED ASSEMBLY (Fig 11)
Disassembly
Remove housing cover (Fig. 12 [17]) and rear access panel (Fig. 12 [24)) as
described in the removal of top cover section.
Shift handle (Fig. 10 [1]) from fourth speed to first speed and back to fourth
speed with the mixer OFF. (Squeezing the belts (Fig. 11 [11 & 22]) together
at mid span will help.)
Unscrew nut (14) and remove washer (15) and belt retainer (16).
Unwrap belt (11) from pulley (12) and withdraw from van-speed pulley
(10).
Shift handle (Fig. 10 [1]) to first speed.
Unscrew nuts (14). Remove washers (15) and belt retainer (24) from mixer.
Unwrap belt (22) from pulley (23). Withdraw belt (22) from van-speed
pulley (10).
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SRM3O+
Loosen screws on starter (Fig. 12 [33]) which secure motor cord power leads
(Fig. Il [35]). Remove nut (33). lock washer (34) and motor cord ground
lead from weld stud. Remove nuts (33). and cord clamps (32).
Remove nuts securing motor (29) and lift motor from mixer. Loosen set
screw on pulley (23) and slide pulley (23) and key (28) off motor shaft.
Remove two screws securing connection box plate on rear end of motor.
Remove green grounding screw securing motor cord (35) ground lead, Pull
cord leads from motor terminals. (Three phase motors have wire nuts
securing cord leads to motor leads)
Loosen jam nut (Fig. 10 [15]). Loosen set screw on collar (Fig. 10 [17]).
Slide collar and rod end (Fig. 10 E16]) off cam assy. (Fig. 10 [11]).
Unscrew rod end (Fig. 10 [16]) and jam nut (Fig. 10 [15]) from connecting
rod (Fig. 11 [18]). Unscrew connecting rod from rod end (Fig. 11 [7]).
Remove nuts (14) and washers (13). Withdraw van-speed pulley assy. from
mixer housing.
Loosen the two set screws on each van-speed pulley (10) and remove from
shaft (9). Remove woodruff keys (17) and retaining rings (1) from shaft.
Drive shaft (9) from pulley swivel bracket (4). Press remaining ball
bearings (2) from shaft (9) and from swivel bracket (4). Remove retaining
rings (3) from swivel bracket.
Remove retaining rings (6) from rod end pin (5) and bracket swivel pin (21).
Drive pins (21 & 5) from swivel bracket (4) and swivel bracket hase (19).
Reassemble
Reassemble in reverse of above procedure. Adjust belts as described in
Mechanics Maintenance section 1 a, d-f.
Adjust upper and lower belt retainers (16 & 24) 1/8 from outer belt surface.
HOUSING (Fig 12)
For the remaining parts which have not been discussed pertain to electrical
components and the housing, Figures 12, l3A, 13B, and l3C should provide
adequate guidance for the disassembling and reassembling of these parts.
Page 19
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