Grindmaster D15-4 Service Manual
PLACE BEARING SLEEVE ON
GUIDE PIN
Note flat sides on outside of
guide pin and on inside of
bearing sleeve.
Line flat sides up until bearing
sleeve slides down over
guide pin and rests
on the cooling plate.
PLACE PUMP COVER OVER GUIDE PIN
Place the pump cover over the guide pin
with the spray tube toward the front.
Note that the tab on the front of the pump
cover fits between the 2 locator buttons
or ridges on the bowl. Mini units - bent
part of spray tube faces front of bowl.
NOTE: Use agitator cover in
place of pump cover and spray tube for
fresh juice, drinks that foam (iced tea or
dairy products), or heavy viscous drinks.
PLACE IMPELLER OVER
BEARING SLEEVE.
Put impeller over bearing
sleeve with fin side up.
INSTALL LOCKDOWN WASHER OR CLAMPS
Standard Units:
• Place lockdown washer over guide pin.
• Push lockdown washer down and
into locking keyway.
• Turn lockdown washer clockwise to
lock into place.
Mini Units:
• Place lockdown washer
over guide pin.
• Push lockdown washer
down and into locking
keyway.
• Slide into locked
position.
D112 Superbowl Units:
• Insert each lockdown clamp
in a lockdown pin and snap
down into place.
(Lock down 2 clamps closest to
the front of the bowl first.)
PLACE BOWL GASKET ON BOWL
Turn bowl upside down and place
bowl gasket over the neck of the
bowl. Moisten gasket with water or
or thin film of lubricant.
NOTE: On D112 units place bowl
gasket around cooling dome.
PUT BOWL ON BASE
Place the neck of the bowl over center of the cooling
plate and with a back and forth downward motion, push bowl
down into place.
NOTE: On D112 units, place bowl over the gasket and cooling
dome with the neck of the bowl centered on the cooling dome.
ASSEMBLE VALVE
AND HANDLE
Place handle (C) in the
two V-cuts in the front of
the handle bracket (B) and
push handle back.
From inside bowl, lower
the valve (A) through the
outlet hole, and through
the hole in the handle.
Release handle.
REPLACE DRIP PAN(S)
Place cover/grid on drip pan.
Place top edge of drip pan up
under lip on front panel.
Lower each drip pan so that the
tab goes down into the tab slot
and locks pan in place.
Regular units proceed to step 15.
Whipper units proceed to step 9.
1. HOLD HANDLE IN “V”
NOTCHES & LIFT REAR
OF HANDLE UP.
HANDLE
O-RING
VALV E
2
3
4
1
5
6
7
LOCKDOWN
WASHER
LOCKING KEYWAY
3/8” TAB
“FRONT” OF
DISPENSER
(TOWARD VALVE AT
FRONT OF BOWL)
HEAD OF GUIDE PIN
CROSS RIBS
PUMP COVER
Assembly
8
BASEPLATE
TAB
SLOTS
FRONT PANEL LIP
3. RELEASE HANDLE
2. FROM INSIDE THE
BOWL, LOWER THE
VALVE THROUGH
OUTLET HOLE, AND
THROUGH HOLE IN
THE HANDLE.
Crathco®Beverage Dispensers
Operator Manual
Bearing Sleeve
Impeller
Page 2 Crathco® Beverage Dispensers
Assembly (cont.)
(WHIPPER UNITS ONLY)
PRESS SPRING UP INTO
PLACE AGAINST THE BOTTOM
OF THE BOWL.
(WHIPPER UNITS ONLY)
ASSEMBLE THE
RUBBER INLET ADAPTER
Assemble white rubber inlet
adapter by stretching one end
over the large tubular inlet on top
of the whipper housing. Attach
the other end over the ring sleeve
on the underside of the handle.
(WHIPPER UNITS ONLY)
INSERT HANDLE INTO “V”
NOTCHES IN BOWL AND
PLACE VALVE INTO HOLE
(INSIDE BOWL).
(WHIPPER UNITS ONLY)
TURN VALVE 90° TO
LOCK.
Cross slot (located on top
of valve) should run left to
right across the bowl when
locked.
(WHIPPER UNITS ONLY)
PUSH WHIPPER BLADE
INTO PLACE.
Replace the whipper blade by
lining up the flat inside the blade
with the flat side of the motor
shaft. Push blade firmly into
place.
(WHIPPER UNITS ONLY)
REPLACE WHIPPER CHAMBER
Replace whipper chamber by
positioning the medium-sized
opening up and tilting 1/8 turn to the
right. Put whipper chamber over
whipper blade and turn to the left
until it locks into place.
9
HANDLE SHOULDERS GO
INTO “V’ NOTCHES
RINGSLEEVE
DOWN
VALVE HOLE
SPRING
VALVE HOLE
SPRING
10
“W” IS
WHIPPER
VALV E
TOP
14
(LOOKING DOWN INTO BOWLS)
CROSS-SLOT
VALVE DOWN IN HOLE
READY TO LOCK
AFTER 90° TURN,
VALVE IS LOCKED
I/ON
SPRAY
O/OFF
I/ON
REFRIG.
O/OFF
Ring sleeve on
bottom of handle
Rubber inlet
adapter
Plastic whipper
housing
11
12
13
FILL BOWL(S) WITH PRODUCT
and place lid(s) on bowl(s).
Turn spray switch on first then refrigeration.
15
IMPORTANT: NEVER RUN REFRIGERATION UNLESS
SPRAY OR AGITATE IS ON.
REMOVE PUMP COVER
Remove pump cover by
lifting up on spray tube.
STANDARD & MINI UNITS:
REMOVE VALVE AND HANDLE
Lift valve. Handle drops into
operator’s other hand.
WHIPPER UNITS:
• DISASSEMBLE THE RUBBER INLET
ADAPTER
Remove one end from the large tubular inlet
on top of the whipper housing and the
other end from the ring sleeve on the
underside of the handle.
• REMOVE WHIPPER CHAMBER
Turn whipper chamber to the right until it
releases and you can pull it off of the
whipper blade.
• REMOVE WHIPPER BLADE
Pull whipper blade off of the motor shaft.
• TURN VALVE 90° TO UNLOCK.
REMOVE HANDLE AND VALVE.
• REMOVE SPRING FROM
BOTTOM OF BOWL.
REMOVE BOWL AND
BOWL GASKET
Twist bowl back and forth
while lifting up. Bowl gasket
will be around bottom of
bowl.
NOTE: On D112 units, bowl
gasket will be around cooling
dome.
REMOVE IMPELLER
AND BEARING
SLEEVE
Remove impeller and
bearing sleeve by
lifting them straight
up.
NOTE: Check impeller and
bearing sleeves for
wear.
See page 5.
THOROUGHLY CLEAN ALL PARTS IN WARM WATER
USING A MILD NON-ABRASIVE
DETERGENT AND
RINSE THOROUGHLY.
CAUTION: ABRASIVES WILL SCRATCH PLASTIC PARTS.
WASH BOWL LIDS IN COOL OR LUKEWARM WATER TO
AVOID LEAKS DUE TO SEALED SURFACE BEING
DAMAGED.
REMOVE LOCKDOWN WASHER(S)
SANITIZE
Immerse parts in sanitizing solution for 1-2 minutes.
Remove parts from sanitizing solution and drain.
DO NOT RINSE. Place parts on a clean surface to air dry.
Wipe the machine, condensate tray and cooling plate
depression with a cloth wetted with sanitizer solution.
IMPORTANT:
Never pour dry powder, crystals, or concentrate
into a dry bowl. Premixing beverage in separate container is
recommended. If mixing in bowl, always add water first.
2a.
3
5
6
Standard Unit: Twist lockdown
washer counterclockwise, slide
to release keyway. Then lift out.
Mini Unit:
Slide to release
keyway, then lift out.
D112 Unit:
Release each clamp.
DISASSEMBLY
DRAIN ALL BEVERAGE FROM BOWLS
A. Remove bowl lid(s) and drip tray(s)
B. Drain through valve then
C. Tip unit forward, gently press spray
tube back a short distance to lift the
edge of the pump cover to allow
remaining beverage in well to be
drained through valve.
1
7
4
2b.
Ring sleeve on
bottom of handle
Rubber inlet
adapter
Plastic whipper
housing
VALVE HOLE
SPRING
VALVE
HANDLE
Crathco® Beverage Dispensers Page 3
Bearing
Sleeve
Impeller
ROUTINE MAINTENANCE: For all Models
Cleaning Your Dispenser
To optimize performance or when using dairy products, clean unit daily.
Regular cleaning of bowl components will result in maximum pumping efficiency, proper seating and sealing, and
prevention of leaks at the valve O-Ring and bowl gasket by removing dried-on beverage solids and pulp from moving sealed parts.
1. Wash all bowl components regularly. Follow all local health codes.
* Refer to Disassembly, Cleaning, and Assembly instructions on pages 1-3.
Sanitizing Your Dispenser
* Refer to Disassembly and Assembly instructions on pages 1-3.
1. In the bowl, mix one gallon of Oxford Chemical’s Disinfectant/Sanitizer Formula C or its equivalent.
2. Turn on spray motor(s) and allow sanitizer to spray around inside of bowl for a period of time as recommended by
the sanitizer manufacturer. Formula C is satisfactory for this purpose when mixed in a solution of 1 liquid ounce of
cleaner to 4 gallons of water. Run spray motor(s) for 60 seconds. In areas with extreme hard water, consult the
local health authority.
3. Drain sanitizer completely and thoroughly during each step of the cleaning process (wash, rinse, and sanitize).
Refer to tips on draining in Disassembly Guide on page 3.
HELPFUL HINTS
1. Noisy Impeller: Do not run impeller dry. The impeller will make a chattering sound in an empty bowl. Remove the
impeller and run a small amount of water in the bowl.
2. Valve and O-Ring: On the first installation, if there is an after-drip, place your hand on the valve and with a slight
downward pressure turn it slightly. This will help seat the o-ring so that it is properly aligned
with the valve seat. If an o-ring becomes cut or worn it should be replaced. If you are pumping
a product which has excessive pulp, a separate valve weight may be purchased to add extra
weight so the o-ring will press down against the pulp and guarantee a positive shut-off.
3. Valve Cap Use: The Valve Cap (Part # 2039) insures that a tight valve seal will occur with
products containing heavy pulp. The Valve Cap can be installed by placing it on top of the
Valve after the Valve has been assembled into the bowl. See Figure A.
4. High Water Marks on Bowl: When you agitate, you may get “high water marks” as the
beverage level drops. Keep the bowl as full as possible. Frosted bowls are available which
are helpful in reducing the appearance of water marks.
5. To Spray or Not to Spray: Most beverages can be sprayed. It is best not to spray iced tea,
iced coffee, natural juices, or beverages that foam (whipped drinks). A special agitator plate is
used in place of a pump cover and spray tube to promote circulation.
6. Proper Cooling: Always keep spray switch on when refrigeration switch is on. A unit must
spray or agitate to cool. Failure to do this will cause impeller to lock-up. The dispenser is
designed to run 24 hours a day. Keep both spray and agitate on when beverage is in the bowls.
7. Condensation: Condensation on the bowls and lids is natural, cool, and refreshing. The amount of condensation
is affected by humidity. Condensation will run down the front panel into the drip tray. Remember to occasionally
empty the drip trays.
8. Single Bowl Operation: If you find it necessary to run your dispenser with only one bowl containing beverage,
put one half (1/2) cup of water in the unused cooling plate depression(s) for best one-bowl operation and
efficiency.
Page 4 Crathco® Beverage Dispensers
VALVE CAP
VALV E
Figure A
PREVENTATIVE MAINTENANCE
Crathco® Beverage Dispensers Page 5
1) Wash all bowl components regularly.
2) Wash impeller and bearing sleeve individually and check for
wear.
a) Check for wear on bearing sleeve (flange should be
1.77mm thick - thickness of penny or quarter). (Figure C)
b) Check for wear on impeller (inner white center section
should be flush with colored part of impeller). (Figure B)
c) If bearing sleeve or impeller do not spin freely or are worn
- replace them. (Figure F)
d) Worn parts can cause personal injury, impair cooling and
can damage machine. (Figure D & E)
3) Check valve o-rings and bowl gaskets for wear or damage replace every 6 months or as needed.
4) Every 6 months or more often if needed: unplug unit, remove
panels, clean condenser and interior. (Remove dust and lint
from fins with a soft brush and vacuum.)
5) For further information, visit www.grindmaster.com or
call (800) 695-4500.
Part #s for Preventative Maintenance
Description Part #
Bearing Sleeve (all units except D112) 3220
Large Blue Impeller
(D & WD model)
1161
Small Red Impeller
(E model)
1008
Universal Impeller (all models) 3587
Valve O-ring 1012
Bowl Gasket - for D, WD models
5 gallon (or 3 gallon) bowl
1013
Bowl Gasket for E model and/or 9 liter bowl 2010
Bowl Gasket for 12 gallon SuperBowls (D112) 1150
Bearing Sleeve for 12 gallon Super Bowl (D112) 1983
New bearing sleeve
flange (approx. 1.77mm - thickness of
penny or quarter)
Worn bearing sleeve (replace
when worn to approx. 1mm or 1/2
thickness of penny or quarter).
Bearing sleeve and impeller
should spin freely when
held like this. If parts do not
spin freely or are worn, unit
will not cool properly and
worn parts may damage
machine.
worn flange
Bearing sleeve with flange missing
is extremely worn. Discard
immediately.
CAUTION: Handle with care. Sharp
edges may cause personal injury or
damage to machine.
Figure B
Figure C
Figure D
Figure E
Figure F
Universal Impeller
(Part # 3587)
Bottom of
Worn Impeller
Replace when worn.
Yellow or white area no
longer flush but indented.
Top of Impeller
Bottom of Unused Impeller
Inner center section should be
flush with exterior part
of impeller.
TROUBLESHOOTING GUIDE
If you still need help, call an authorized service center in your area or call Grindmaster Corporation’s Technical Service Department.
You can reach Technical Service at (800) 695-4500 (USA & Canada only) or 1-502-425-4776 Monday-Friday, 8:00 AM-6:00 PM Eastern
Standard Time.
Please have the model and serial number ready so that accurate information can be given.
Prior authorization must be obtained from Grindmaster Corporation’s Technical Service Department for all warranty claims.
Page 6 Crathco® Beverage Dispensers
PROBLEM POSSIBLE CAUSE SOLUTION
No or partial Refrigeration:
Compressor Runs
NOTE: Unit must spray or agitate
properly to obtain cooling
• Condenser clogged with dust or lint
• Unit not properly spraying or agitating
• Faulty fan motor
• Loss of refrigerant
• Unplug unit, remove panels and clean out all
lint and dust from condenser and inside
machine. Use vacuum cleaner or bottle
brush.
• See “Problem” - “No Spray or Agitation”
• Replace motor (call for service)
• Call for service
No Refrigeration:
Compressor Does Not Run
• Call for service
No Spray or Agitation:
Spray Motor Runs
Chattering Impeller
• Impeller does not spin; check for worn
bearing sleeve and/or impeller (see page 5)
• Impeller chatters and/or does not spin
properly
• Replace sleeve and/or impeller if worn.
• If using a dairy based product, make sure
you are using the correct impeller (blue or
red with “M” on bottom or a black Universal
Impeller)
• If not worn, clean impeller and bearing
sleeve. Impeller must spin freely on bearing
sleeve to spray and refrigerate properly.
• Raise drive magnet higher on motor shaft,
but not high enough to rub. (Call for service
or see service manual)
No Spray:
Spray Motor Does Not Run
• Call for service
Leaky Bowl • Gasket improperly installed
• Worn or nicked bowl gasket
• Reinstall gasket. Check directions for
bowl assembly.
• Replace gasket
Leaky Valve • Foreign particles on valve, o-ring or
valve stem
• Nicked or cut o-ring
• O-ring twisted so will not seat uniformly
• Clean valve and o-ring
• Replace o-ring
• Remove and remount
Noisy Unit • Worn bearings in either fan motor or
spray motor(s)
• Bent fan blade
• Replace motor(s) (call for service)
• Unplug unit and re-bend fan blade to correct
alignment
1288
1090
1010A
1012
1161/3587
3220
1742
1740
1013
2266
1261
1092
1741
1735
STANDARD BOWL ASSEMBLY PARTS
1734
Part # Description Models Used On
1010A Dispense Valve w/ O-ring All standard (non-whipper)
1012 O-ring for Dispense Valve All
1013 Standard Bowl Gasket All D15, D25, D35, HD and WD models (for 5 & 3 gallon bowls)
1090 3 Gal. Bowl All D15, D25, D35, HD and WD models
1092 3 Gal. Bowl Spray Tube All D15, D25, D35, HD and WD models w/ 3 gal. bowls
1161 Standard Bowl Impeller (blue) All D, HD and WD models
3587 Universal Impeller (black) All models
1261 5 Gal. Bowl Spray Tube All D15, D25, D35, HD and WD models w/ 5 gal. bowls
1288 5 Gal. Bowl All D15, D25, D35, HD and WD models
1734 Washer, Lockdown All D15, D25, D35, HD and WD models
1735
Standard Bowl Pump Cover for
Red (p/n 1008) or Black (p/n 3587) Impeller
(use with spray tube)
All D15, D25, D35, HD and WD models
1740
Agitator for use with Red (p/n 1008) or
Black (p/n 3587) Impeller
All D15, D25, D35, HD and WD models
1741
Standard Bowl Pump Cover for Blue
Impeller (use with spray tube)
All D15, D25, D35, HD and WD models
1742
Standard Bowl Agitator for Blue Impeller (for
iced tea, viscous products, or orange juice)
All D15, D25, D35, HD and WD models
2231 Plastic Drip Tray D15-4, D25-4, D35-4, E27-4, D112-4, HD & WD models
2232 Plastic Drip Tray Grid D15-4, D25-4, D35-4, E27-4, D112-4, HD & WD models
2240 Standard Bowl Lid All D15, D25, D35 and WD models (Do not use on HD models)
1116 Bowl Lid for Heated Units HD (heated models)
2243 Stainless Steel Drip Tray D15-3, D25-3, D35-3, D112-3 and HD-3 models
2266 Dispense Valve Handle All standard (non-whipper)
2484 Non-Contact Handle All standard (non-whipper)
2305 Stainless Steel Drip Tray Grid D15-3, D25-3, D35-3, D112-3 and HD-3 models
3220 Bearing Sleeve All
Crathco® Beverage Dispensers Page 7
2484
3335
3330
2232
2231
1010A
1012
3220
1008 or 3587
2012
2911
2910 or 3629
2010
2914
2802
1994
2999
2660
2682
Mini Bowl (E27 & E47) Bowl Assembly Parts
Part # Description
1008 Mini Bowl Impeller (red)
1010A Dispense Valve w/ O-ring
1012 Dispense Valve O-ring
1994 7 Liter Bowl
2010 Mini Bowl Gasket
2012 Mini Bowl Lock Washer
2231 Mini Twin Plastic Drip Tray
2232 Mini Twin Plastic Drip Tray Grid
2266 Dispense Valve Handle (pictured w/ std bowl assembly photo)
2484 Non-Contact Handle (pictured w/ std bowl assembly photo)
2660 Mini Quad Drip Tray (Plastic)
2682 Mini Quad Drip Tray Grid
2802 Standard 9 Liter Bowl
2910 Mini Bowl Pump Cover (use w/ spray tube) use w/ red impeller (p/n 1008)
2911 Mini Bowl Agitator (use with iced tea, orange juice, and viscous products)
2914 9 Ltr. Mini Bowl Spray Tube
2999 Cover for 9L Bowl
3220 Bearing Sleeve
3330 Stainless Steel Drip Tray, E27, E47
3335 Stainless Steel Drip Tray Grid, E27, E47
3587 Universal Impeller (black)
3629 Mini Bowl Pump Cover - use with black impeller (p/n 3587)
Page 8 Crathco® Beverage Dispensers
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