DAIRY EQUIPMENT Dari-Kool User manual
INSTRUC
ON
ANUAL
FOR
THE
OPERATION
OF
•
'"
I •
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
-1-
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.
-2-
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
-3-
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.
-4-
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.
-5-
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.
-6-
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.
-7-
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.
-8-
f.
If
spots
or discoloratin!1 occurs on
any
stainless finish.
they
usuall can he remn
eel
by
using a cleansin pow-
der
on a
damp
raIl.
If
a leanser
is
used be
sure
and
go
with
the
grain of
the
teeI
or
you will change
the
finish.
There
may
be instances wh r
spot
removal
will
not
be successful. In thes.e
instan"
,
cl1f'ck
with
your
local grocer who can usually recommend a cleaner
and
stain
remover
which will
take
care of
the
spots
or discoloration.
STERILIZING
METHOD
The
tank
should be sterilized
just
prior
to
adding
milk. We
recommend
that
a sanitizer
be
used as
they
spray
a fine
mist
of
proper
mixture on all
surface~
and
assure you of
proper
sterilization. Check with
your
field
man
for his recommended
sterilizing compound. (See
approved
sterilizers list).
CAUTION:
If
cleansers or sterilizing cornpounds are
not
used accord-
ing
to
recommendations
of
the
maker
you
can
damage
stain-
less surfaces. Alkaline cleansers or acid cleansers should
be
thoroughly
rinsed
off
after
use.
Sterilizers
can
discolor stainless if misused,
or
when con-
taminated
with
acid cleaners. Follow
the
maker's
recom-
mendations
for
proper
usage.
Do
not
leave sterilizing solu-
tion
in a
tank
for more
than
:3
h01lr.
Drain
the
tank
com-
pletely
and
thorouiYhly. Rinse with clean water, unless used
immediately
after
sterilizing.
CARE
AND
MAINTENANCE
OF
VALVE
AD
FITTINGS
Valves
and
fittings
must
he ca.refully
handled
if
they
are
to
give a
satisfactory
service life
without
unnecessary repairs
or replacement. Listed
are
important
points
to
keep in mind.
1.
Valves
or
fittings should nf'ver be
thrown
into
wash
vat
or
handled
roughly.
Extreme
care should
be
used
when removing valve
to
avoid dropping on concrete
floor as nicks will cause leaks.
2.
Never
use steel wool for cleaning fittings or valves.
3.
Never
leave fittings or valves in cleaning solution
longer
than
necessary. This
can
cause
discoloration.
4.
~ever
place fittings
or
valves
in solution in a
tinned
or
galvanized receptacle.
If
this
is
done
di, oloration
will occur.
-9-
5.
When removing or placing
the
plug in
the
valve body,
extreme care should be taken
to
prevent the plug from
hitting the edge of
the
valve body and causing a nick.
Such a nick, if not removed,
will
score
the
inside
of
the
body causing
the
valve to leak.
6.
After washing, valve plugs should always be inspected
before being placed in
the
valve body.
If
a nick
is
present
it
should be removed with a fine
file.
7.
Valve bodies
and
valve plugs
are
matched during manu-
facture. Plugs and bodies are not interchangeable.
8.
Never open or close a valve without first loosening
the
bottom
nut
and never open a valve
by
hammering
it
as this
will
ruin it.
9.
Never tighten
the
bottom
nut
too tightly.
Hand
tightening is sufficient. Excess tightening will
not
cause a valve to stop leaking.
If
a valve
is
leaking,
look for
the
cause and remedy it.
10. Do
not
attempt
Lo
grind or relap a valve. This
can
only be done
at
the factory where proper facilities
are available.
11.
If
the valve leaks due
to
damage or nicks, it cannot
be
considered
"in
warranty" and charges
must
be
made
for
repair.
DAIRY
EQUIPMENT
COMPANY
A
DIVISION
OF
DEC
INTERNATIONAL, INC.
MADIISO'N,
WISCONSIN
-10-
NOT
ES
-11-
."
o
3
z
p
."
n
"
1. AGITATOR
6.
CONTROL SWITCH 16.
STAINLESS
STEEL
TANKS
2.
REINFORCED
COVER HOOKS 7. THERMOMETER 17. SANITARY
TANK
DRAIN
3.
TANK
COVER 8.
BRASS
WATER PUMP 18. CALIBRATED MEASURING
ROD
4.
CONTROL CABINET
9.
ADJUSTABLE
LEGS
19. TIGHT FITTING
LIDS
5.1
ER
10.
33°
ICE·WATER 20. JUST-RIGHT
POUR
HEIGHT
11.
COPPER
COOLING COILS
12.
LARGE
RESERVE
ICE·BANK
13.
AGITATOR BLADE
14. POLYURETHANE INSULATION
1
S.
ICE.wI
~
SPRAY
PIPES
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