DAIRY EQUIPMENT Dari-Kool User manual

INSTRUC ON
ANUAL
FOR THE OPERATION OF
•
'"
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Manufactured by
DAIRY EQUIPMENT COMPANY· MADISON, WISCONSIN

DARI-KOOL OWNER'S NAME
DATE OF PURCHASE SERIAL NUMBER
NAME OF
DEALER
TELEPHONE

I T ROD UC ION
You have bought the finest Bulk Milk Cooler
obtainable
and if you will take care of it the arne
as
you would an expensive piece of equipment,
you will be rewarded
by many year of s rvice.
We urge you
to read this Manual carefully and
become thoroughly acquainted with your DARI-
KOOL.
We have attempted to cover all phases of opera-
tion, however,
if you have any questions feel free
to contact us.
DA RY EQUIPMENT COMPANY
A DIVISION OF DEC INTERNATIONAL, INC.
MADISON, WISCONSIN
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OW,NERS INSTRUCTION MANUAL
1. INSTALLATION
Prior to the actual de~ivery of your DARI-KOOL Bulk Milk
Cooler, there are certain important steps
that should have
been made. Your DARI-KOOL dealer
is well equipped to
assist you in these preliminary steps and, of course, you
will
want to make certain that these are taken care of.
A. FLOOR-Make certain the milkhouse floor is strong
enough to support
tank filled with milk.
B.
POWER SOURCE-Make sure that proper electric cur-
rent is provided for the cooler. It may be necessary for new
wiring to be run.
C.
DRAIN-Floor t6 be pitched and drain placed to comply
with regulations.
D. WATER REA
TER-Plenty of hot water will be needed
for cleanup of utensils and cooler. (Check with
field man for
proper size.)
E. TANK
POSITION-Tank will have to be located in milk
house to comply with regulations on clearance from walls.
F. VENTILATION-It i:; generally recommended that an
air intake and exhaust fan be installed in the milk house.
This helps overcome overheated milk house temperatures
and actually
will cut cost of operation. Also, try and avoid
direct rays of I'un falling directly on cabinet or condensing
unit.
2. ARRIVAL OF COOLER
When your DARI-KOOL Bulk Milk Cooler is delivered,
inspect it very carefully for any damages
that may have
incurred in transit. (The cooler was accepted in good condi-
tion
by the freight company or dealer and if damaged, claims
will have to be entered against them and not the manufacturer.)
3. LEVELING THE CABINET
Adjustable legs are provided that can be screwed up or down
so
the cabinet can be leveled. The dealer will level and cali-
brate
the cabinet to duplicate factory setting. This insures
you
of correct measurement of milk.
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4. ELECTRICAL CONNECTIONS
All condensing units must be operated on 230 volt, 60 cycle,
single phase electrical supply.
Water pump
and agitator motors are to be operated on
115 volt,
60 cycle, single phase electrical supply.
5. CONTROL PANEL
All DARI-KOOL Bulk Milk Coolers have a control panel
where electrical connections
will be made by the installer.
Fused switch boxes should be provided for protection.
In the control pane] or on the side section of the cooler there is
also:
A. THERMOMETER-Easy to read dial which is in direct
contact with milk
tank to give you exact temperature of milk.
B.
TEMPERATURE CONTROL-Adjustable to tempera-
ture setting required by your milk plant. This controls the
automatic operation of
the water pump and agitator. The
setting on the control
is the shut-off point which means when
the milk is cooled to this temperature the pump and agitator
will
shut off. Also, when milk temperature rises several
degrees the pump and agitator will
start again.
C.
TIMER-At certain times it is necessary to run agitator
and pump even though the temperature control is not call-
ing for it. To accomplish this
we have incorporated a timer
which by-passes
the temperature control. The timer can be
set to any position up Lo 120 minutes and the pump and agi-
tator will function
that length of time though the tempera-
ture has reached the preset temperature on the control. The
timer
is used by the milk hauler to get a composite sample
and you can use
it for cooling milk. To do this we recom-
mend
that 10 or 15 minutes before starting to add milk to
the cooler you set the timer. This will insure you of cooling
prior
to the time the temperature control is calling for cooling.
As soon as the milk has warmed up enough for the tempera-
ture control to take over,
the timer will continue to run back
to zero and
the temperature control will take over for auto-
matic control
of pump and agitator.
D.
ICE BANK CONTROL-The operation of the condens-
ing unit
is controlled by the ice bank control. The amount
of ice built on the coils is determined by the distance the
bulb is from the coil. This distance is set at the factory
and no adjustment should be attempted by anyone except
authorized DARI-KOOL dealers or Service Personnel.
As
a matter of information you may find the condensing unit
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will not operate when th pump and agitator do as they are
not wired together.
The condensing unit will onlv oper te
when the ice bank control is calling for ice building.
E.
AGITATOR AND PUMP SWITCH-To turn the pump
and agitator
off when there is no milk in the cooler an "0 -
OFF" toggle switch is located on the side of the cooler.
6. MOTORS
The conden8ing unit consists of a motor compressor and
fan motors.
In addition to the above, each cooler is equipped
with a water pump which circulates the 33e ice water
to
accomplish rapid cooling. If a two-speed agitator is furnished
the two-speed switch should be set
at "LO" for the cooling
operation. This insures proper cooling as
it moves the milk
gently during the period
of cooling. The milk hauler will place
the switch in "HI" position to insure a good composite sample.
7. OPERA ION
Befor putting milk in the cooler the first time, and each
time the cooler
is empty thereafter, wash thoroughly. Any
cleaner on the recommended list may be used. Be sure and
follow
the directions on the package for proper solution.
We recommend
that a plastic pail be used as you can set
this
in the cooler with no danger of scratching the stain-
less steel finish. With the nylon brush furnished with each
tank, scrub all parts of
tank making certainto clean the covers
and under the deck. Open valve and let the
tank drain.
Next, rinse tank with clear water. The lids and measuring
stic can be placed in wash sink for cleaning. The milk valve
should be removed for cleaning. (See special section on care
of valve).
Just prior to pouring the first milk into the cooler
it is necessary to sterilize it.
Use a disinfectant recommended
by your fieldman, in
the proper s lution recommended by the manufacturer. The
ea.c::iest and most economical method to sterilize a tank is
by the use of a sanitizer which your dealer can furnish you.
Drain
any residue of the solution to prevent contamination
of milk.
Put the valve on cooler outlet making sure the Neoprene
Gasket
is placed between the outlet and valve. Close the
valve and your cooler
is ready to receive milk.
We recommend
starting the water pump 10 or 15 min-
utes prior to adding milk
to the tank, by setting the timer
to 30 minutes. This
will cool the tank down so when the
first milk
is added you will have faster cooling. If you have
the agitator switch in the "OFF" position, be sure and turn
it on when milk is up part way on the blade. The same
procedure should be followed on subsequent milkings.
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To read the measuring stick it i nece ary to remove it
from the cooler and thoroughl. sh it. eplace in tank
and remove it noting the scale reading, then gcing to your
chart you can determine how much milk you have in the Lank.
Listed below are some "DO. T'Ts" to follow:
1. DON'T use steel wool. Particles of this may adhere to
the stainless steel and later show up as rust.
2. 00 'T allow cleansers or sterilizers to remain n
stainless steel longer
than necessary.
3.
DON'T allow non-stainless metal to lie on stainless
steel surfaces.
4.
DON'T use full strength acids for removing milk stone
Acid cleaners
may be used if you follow the recommenda-
tions of
the manufacturer.
5.
DON'T use water with high mineral content without
wiping excess
frQm the surface being cleaned.
6. DON'T leave the switch controlling the pump and agitator
in "ON" position when tank is empty. It is probably
best
if you check with your milk hauler on this as he
can turn it
"OFF" when he empties the tank.
7. DON'T tamper with the controls, motor or unit on cooler.
(Tampering can void warranty).
8.
DON'T spray waLeI' directly on any motor.
9.
DON'T turn off main switch to condensing uniL.
The following "DOs" will aid you in gaining maximum
benefits from your DARI-KOOL
BULK MILK COOLER.
1. DO clean your cooler properly, both the interior and
exterior. (See "Care of Stainless Steel" which accom-
panies these instructions).
2. DO check and see that your pump and agitator switch is
in "0 "position before adding milk.
3. DO set timer
about 10 or 15 minutes prior to adding
milk
to tank.
4. DO read thermometer-this will indicate whether co leI'
is performing satisfactorily.
8. TROUBLE
If you notice that your compressor is n t performing ::md
there is no ice around the control bulb w suggest the r,.,l_
lowing points be checked before contacting your dealer.
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a. Is the main switch off?
b. Has a fuse blown out?
c. Is disconnect switch "ON"?
d. Is the power "OFF" in the building?
If your cooler seems to run longer than normally, check the
following:
a. Does the condenser need cleaning? (This should be
cleaned every 3
to 6 months). This can be cleaned with
a brush or vacuum cleaner.
b. Is there sufficient circulation of air around unit?
c. Do you have adequate ventilation? Cooler running
time will be increased
by three to four hours per day
if milk house is
not properly ventilated.
d. Do not overcool your milk. Follow the recommenda-
tions for
temperature control setting.
If service is needed, call your DARI-KOOL dealer or his
aut.horized refrigeration serviceman.
9. REFRIGERATION SYSTEM
The dealer is responsible to start your cooler after thoroughly
checking it. However, there are several items which re-
quire your attention. First, when
the cooler is installed,
we recommend that no cooling be attempted until the cooler
has
shut off, thus assuring the ice bank is complete.
Secondly, when the
first. ice bank is formed a certain amount
of water will flow out the overflow pipe. This displacement
is
natural and you do not have to replace this water.
The compressor body removes the heat from the water and
if you touch
it and it seems very hot, this is natural as it
is designed
to operate that way.
The water pump motor and the agitator motor are also
designed to operate
at temperatures which feel hot to the
touch.
The temperature of all motors \vill be higher in hot
weather than in cool weather.
10. COOLING MILK IN CASE OF POWER FAILURE:
In the event that your power is off at the time of cooling
you can
at least cool the milk to a point where it will not
spoil.
If there is ice left in the ice bank compartment we
suggest that you plug the overflow pipe and add water to
the tank as high as possible. This means the bottom and
part way up the sides of the milk tank will be submerged
in water. You can then remove the
agitator blade and fre-
quently
stir the milk to accomplish cooling.
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In some instances a power take-off an g nerator is avail-
able to generate enough power
to run the pump and agi-
tator. If you have such a gen rator ch ck with your dealer
as
to where to make the connections for operation of pump
and agitator.
If there is no ice left in the i e bank compartment we suggest
that you purchase some ice (if a ailable), break it up and
place in
the compartment. It takes approximately 35 pounds
of ice
to cool each 100 pounds of milk to 38 degrees. Follow
the same directions as if there was ice on the coil.
Unless
your power interruption is for a prolonged period
the methods listed previously can be used, however, a fair
degree of cooling can be accomplished without ice.
It takes
longer,
but in all probability will save your milk. Usually,
you
are able to get water from your well and add to the cooler,
as above. After stilTing for a
few minutes check the ther-
mometer.
If it appears to be remaining at the same tempera-
ture remove the overflow pipe and drain the warmed water.
Add fresh water
and repeat the steps until you get the milk
to around
50 degrees which will prevent spoiling.
Remember,
if any of the above steps are used for cooling,
it will cool faster by stirring.
We realize
that the abov methods are not as effective,
but you can save your milk.
11. WARRANTY
Upon receipt, at the h me ornc, f the warranty card (filled
in by the dealer, giving our name
and address) a warranty
will be mailed to you which ou lines the company obligation
on repairing and repI cing items which fail during
Lhe warranty
period. Check with installer to see that this card is sent in
so you will have
a. warranty on your cooler.
CARE AND MA NTENANCE OF STAINLESS STEEL
The exterior and interior of your DARI-KOOL BULK
COOLER is stainless steel. However, even the finest stain-
less steel,
if not properly cared for, can discolor or pit. Fre-
quently a report
is received which indicates a spot of rust
on the stainless steel. Stw:nless steel does not rust. The spot
may have been caused by arbon steel which was imbedded
in the stainless during fabrication and, of course, will have
to be removed to eliminate the reoccurrence of
the condition.
Most often
the rud can be traced to other causes such as
rusty water, pipes, pails, r other conditions which permit
rusty water
to be used for cleaning the tank. The water
evaporates leaving these rust deposits and to all appearances
the stainless steel is rusting. Because
it is easy to clean and
maintain,
it will remain bright and spotless if good house-
keeping rules are followed.
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1. A clean surface preserves the finish. DON'T let depo. its
or foreign
matter of any kind reme in on the surfac.e for
more
than severaJ hours.
DON'T place tools, pails or wet objects on the surfac.e.
DON'T scratch the surface with steel wool, sandpaper
or emery cloth.
2. Proper cleaning and sterilizing methods keep the sur-
face smooth
and bright.
DON'T use more detergents or sterilizing compounds
than called for in manufacturer's directions. This not
only saves material but also prevents dulling the metal
surface.
DON'T put detergent or concentrated sterilizing com·
pounds in empty tank. HAVE WATER I TANK
FIRST.
DON'T let c.leaning or sterilizing solutions remain in
tank for more than several hours.
DON'T splash or permit such solutions to dry on sur-
face.
It is best to sanitize just before adding milk to
cooler.
DON'T let water evaporate in or on tank. Minerals
settle
out of most waters and will stain the surface.
SUGGESTED CLEANING METHOD
The following is a guide to cleaning and can be modified,
when necessary,
to meet local regulations.
a. Usually
the milk hauler will have rinsed the cooler after
removlng milk. However, prior
to cleaning we suggest
you rinse with clear warm
water (up to 2120 F. water
permissible).
b. Partially
fill tank with water and cleaner, (do not exceed
amount of cleaner recommended by maker), or make
solution
in plastic pail and set in cooler. (Approved
cleansers listed.)
c. Brush all surfaces which contact milk. Be sure to brW'h
under the deck.
After brushing, drain solution from tank.
d. Rinse with warm water and drain from
tank.
e. If any solution has run down the outside of cabinet
rinse with clear water and dry. This will eliminate
unsightly water spotting. A chamois
is best for dry-
ing the exterior finish.
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