Coldelite LB-100B Operation manual

FOREWORD
-
Thank you for selecting COLDELITE to meet today's fast growing
demands. Your COLDELITE freezer has been manufactured at one
of the most modern freezer manufacturing plants in the
U.S.A.,
our Winston-Salem, North Carolina facility, utilizing the most
advanced equipment and technology available in the industry.
We at COLDELITE, take great pride and care in the manufacture
of each and every freezer, using only the finest components
available, toprovide you with years of trouble-free operation.
Over twenty-five years of experience in the manufacturing of
dispensing equipment have guided us in the pre-jarati~nofthis
Operation and Service Manual. PLEASE READ IT CAREFULLY.
Keep
it for future reference and most of all, follow the instructions
from the very time your machine is put into service.
On the following pages, you will find important information and pro-
cedures which describe the proper installation, sanitizing, operation,
and maintenance of your COLDELITE machine.
We feel certain that
your full compliance with these instructions will assure you of ex-
cellent performance, trouble-free operation
and a profitable
business for years tocome.
PACE
A-1

INDEX
PART
1
PART I1
PART I11
PART IV
PARTV
PART VI
PART VII
PART VIII
PART IX
........................
INSTALLATION -1
.........................
A) UNCRATING 1
............. 8) POSITIONING TifE MACHINE .I
............ C) ELECTRICAL REQUIREMENTS Z
.............
DlELECTRICAL CONNECTIONS 3
.........
El COMPLETING THE INSTALLATION 4
EXPLAINATIONOF CONTROLS. ............. 4
A) THE SELECTOR SWITCH ................. 4
8) THE MECHANICAL TIMER .............. -6
................
ClTHE DISPENSE HANDLE 6
...............
DlTHE ELECTRICAL PANEL 6
El OTHER CONTROLS ................... -8
INITIAL CLEANING PROCEDURE ............. 8
..............
ASSE:VBLINC THE FREEZER -10
..............
A) ASSEMBLING THE aEATER 11
........ 8) XSSEiL1BLING THE DISPENSE HEAD
11
................
SANITIZING TifE FREEZER -12
..................
STARTING THE FREEZER 13
................
OPERATING THE FREEZER 17
TECHNICAL INFORMATION
................ 15
......................
A) REFRIGERATION 15
......................
8) BEATER MOTOR 15
.......................
C) DRIVE SYSTEM 16
.........................
MAINTENANCE 16
............
A] TROUBLE SHOOTING GUIDE -18
81 PARTS INDENTIFICATION ............... 20
...................
C) 'NIRINC SCHEMATIC 24

IMPORTANT
Failure to closely follow set-up, operational and maintenance procedures
may result in damage to the unit and/or void your warranty. Coldelite
Corporation will not be responsible for any machine not properly main-
tained.
In the event this unit should malfunction, please contact your Coldelite
Distributor or authorized service agency.
PART
1
INSTALLATI0 N
Before starting this procedure, make certain the shipping case does not
show any evidence of having been dropped, tampered with or abused in
such a way as to indicate that its contents may have been damaged in
transit.
IMPORTANT: Should the outside of the shipping case give any indication
of possible hidden damage, state this on the bill of lading before signing.
Contact the carrier immediately and request an inspection of the damage.
If this procedure
is not adhered to, you will forfeit your right to file a
damage claim and be responsible for subsequent repair costs.
A) UNCRATINC
Proceed as follows:
1. Remove tho machine from its carton and remove all protective crating
material.
2. Remove the single screw at the bottom of each side panel, Remove
the side panels by pulling in a downward and outward direction, allowing
the panel to slide free, The protective plastic coating which is laminated
to the panels czn now be removed by simply peeling off.
8) POSITIONING THE MACHINE
1. The machine is now ready to be positioned onto your counter. The counter
must be capable of supporting
225 Ibs., and should be vibration free, Rein-
force
it if necessary. Remember, when choosing a location, your unit
is air cooled, proper air flow
will need tobe maintained. Allow at least
six
(6) inches on either side and a minimum of twelve (1 2) inches between
the rear of the machine and any obstruction. (Ref. Fig,
1)
PACE 1

17: Flow
I I I
Side View La-1 00B
Front View LB-1008
FIGURE 1
Clearances Required For
Proper Air Cooling
NOTE: If these clearances are not maintained, tile production capacity
will
be reduced, cycling will increase and the potential exists that the
" -
machine will stop immediately.
2, The machine should be within four feet of the power supply outlet,
3- Position the machine for easy accessibility when cleaning, servicing
and performing routine maintenance,
4- 2osition the machine away from direct sunlight. for every 2 OF above
68
F, the mschine's performance will decrease by approximately 1 %-
5- Once the machine is set inposition, it should be le?re!ed as accurately
as possible-
C) ELECTRICAL REQUIREMENTS
A11
wiring installed to operate this freezer must be inaccordtnce \vith
the National Electrical Code and/or local e1ec;rical codes, rules and
regulations.
The machine must be properly grounded. It is recommended
the power supply be installed by a licensed electrician.
VOLTAGE
LB-1008: 1 15 Volts
RUNNING AMPERAGE
FLA: 27.0
FUSE SIZE: 32 AMP ~Uax.
WIRE
SIZE: (50 Fi. 1tlax.1 $10
POWER SUPPLY must 5e adequate to meet requirements at all times,
V01i~cef!uc;uations,
with ihe machice inoperation, should nor exczed
= 1 O~~OF the normal or rated voltace-
PACE 2

fie mode1 LB-1008 requires a 11 5 Volt, 60 Hertz dedicated circuit [ no
other electrical appliances on the circuit),
X separate circuit breaker
rated
at 30 AMPS isrequired . .
. -
ADEQUATE WIRING must be provided with respect to wire size orgauge.
This includes the direct power line to the madnine electrical and connection
box,
Coldelite batch Creezers are equipped *:4ith proteciion for the beater motor.
Should the linevoltage crop, or
in :he unIikely event a shori circuit occcrs,
the overioadprotector
will automatically disconnect :he contactor. This
wiII stop :he machine immediately so that no permanent damage
will
be caused to the motor.
To resiart the freezer, depress the reset button which is accessible throu~h
an opwing at the lower right cornlr of the risnt
sic2 panel. The protector
must cool for several minutes before the reset will operate (Ref. Fig.
2).
The compressor is internally protected- If the Xlixon proteGor trips
due to
an overload condition, the compressor wil! stop and auionaiicalIy
restzfl once iheprotector has cooled for several minutes.
01 ELECTRICAL CONNECTIONS (REF. FIG. 51,
Haviqremoved ;he riskit side ?ace!, ih~ machine's t!ec;rica[ cornponencl
wirins c3nnec:ion box ctnbe
located az the lower righr corner. ?=move
the itleca-ical connection Sox cover.
-.
I ne ?owe? !ine is first ,passed :hroush zhs ac<=sihole iocactd a< the bottom
right :oar ofthe machine. The tine
is ?ken~assedupward thrcugh tkt SCC~~S
hole in the 3ol?om dack z'ir=c!:/ ixo :he c!ec;rical c3r,nec;ion box, The
power iins ,nay now be cannec;td ;O i=rminab Li and LZ. Us2 aaproprizce
elec~ricalwiring hardware and cocneciors
as governed 5y ele~rical codes.
Inall installations, the machine MUST be properly grounded. Adequate
ground continuity
is assured by runnjng and securely fastening a ground
line (conductor) to
the ground lug located in :he electrical connection box,
UTTO

El COMPLETING THE INSTALLATION
Sanitary regulations may require that the counter model machine be sealed
to the counter top. To seal, proceed as follows:
1, Clean the counter top thorougidy to remove any dirt, dust, etc.
2, Clean the lower rim, or bottom flange of the machine base
(Ref. Fig.
31.
3. Apply a bead (approx. 114" wide) of General Electric RTV-
102 silicone sealnat (or equivalent) to the bottom surface of the
base.
4, Place the machine on the counter in the location chosen,
5. Remove any excess sealant by slowly running a flat edged
tool (spackling tool).around the flange of the base frame.
This will create asearnless joint between the frame and the
counter top (Ref. Fig.
3).
6. Allow sealant to dry thoroughly (refer to sealant manufacturer's
directions) before operating the machine.
FIGURE
3
SILICONE
SEALANT
PART II
EXPLANATION OF CONTROLS
All operator controls are conveniently located at the front of the machine.
(Ref. Fig.
4).
A) THE SELECTOR SWITCH
The selector switch is a four position, four function switch. The positions
of the switch (Ref. Fig.
$1 along with respective functions are as follows:
1, OFF - The machine does not operate in this position.
PACE
4

2- PRODUCTION - This position is used to freeze the mix ingredients to
a finished product, Both compressor and beater are in operation,
3, EXTRACTION - This position is used for dispensing of frozen, finished
product. The beater
is in operation and the compressor is inactivated,
4, CLEAN - This position is used for cleaning and sanitizing procedures.
Only the beater motor
is activated in this mode. All refrigeration
circuits are de-energized.
8) MECHANICAL TIMER (Ref. Fig. 41
The mechanical timer is a device for setting the minutes required to
produce a batch of finished product. At the end of the freeze cycle
-
the timer will signal and audible reminding the operator the production
cycle, finished product, is completed. The timer is
a reminder only and
does not turn off the machine. The timer will be discussed in detail
in Part
VI, Starting The Machine.
C) DISPENSEHANDLE (Ref- Fig. 4)
Moving the dispense handle in an upward direction raises the gate cover
for dispensing finished product. A downward motion closes the gate,
I FIGURE 5
PACE 6

The Electrical Control Panel, located behind the right hand side panel
and in the lower right corner, contains the components for the machine
controlling circuit. This panel
is tobe accessed only by trained, exper-
..ienced technicians.
WARNING!
DISCONNECT FREEZER FROM THE SOURCE OF ELECTRICAL SUPPLY
BEFORE ATTEMPINC TO SERVICE.
The following
is an explanation of the control panel components:
C OMPRESSORCONTACTOR - Activates the refrigeration
compressor. When the machine is operated in the
PRODUCTION mode, the.compressor contactor will
be energized by the electronic Hard'O-Ma tic control
(H.O.M.).
BEATER MOTOR CONTACTOR
- Activates the beater
drive motor. The beater motor-contactoris energized by
the selector switch when either in the PRODUCTION,
EXTRACTION or CLEAN MODES.
OVERLOAD PROTECTOR
- Senses the current (amperage)
supplied to the beater motor. In the event
of a current
overload, the protector will trip and stop the entire machine,
The trip AMPS have been pre-set at the factory and are
indicated on the control panel cover. This device also
contains the overload reset mechanism. If reset is
required, position the selector switch to the OFF position
before pushing the reset button. Return selector switch
to the desired mode.
ELECTRONIC HARD-0-MATIC (H.O.M.)
- Automatically
senses and controls product consistency when the freezer is
operaring in the PRODUCTION mode. Depending on signals
received from the beater drive motor, the H.0.M. activates
or stops the refrigeration system to maintain pre-set product
consistency.
CURRENT TRANSFORMER
- Monitors beater motor current
characteristics and provides signal to H.0.M.
TRANSFORMER (MAIN)
- Steps down the primary 115 line
voltage to
24 volt secondary supply for the control circuit.
TERMINAL BLOCKS
(1 15 Volt) - Inter-connection point for
high voltage components, I.E. compressor, main transformer,
beater motor, and condenser fan motor. Also, used to connect
power supply wires.
PACE 7

869 TERMINAL BLOCKS (24 Volt) - Serves as the intwconnection point
for all
24 volt controlling circuit components,
El OTHER CONTROLS
1. HIGH PRESSURE CUT-OUT CONTROL - Located on the right side
of the freezer's upper left corner, and
is installed into the compressor
discharge line (high pressure side). In the event of a high pressure
condition,
it will shut down the compressor. Reset is automatic when
the high pressure subsides. A common cause for cut-out is restricted
air flow through the condenser coil,
2. SAFETY SWITCH DISPENSE HEAD - ' The switch is located behind
the front panel and is a normally open switching device that is mech-
anically activated to the closed position when the dispense head
is securely closed and latched with the retaining knob. Should an
attempt be made to open the dispense head during freezer operation,
the switch automatically opens de-energizing the machine.
PART
I11
INITIAL CLEANING PROCEDURE
The new machine must be completely disassembled, washed, and sanitized
prior tostarting. Proceed as follows:
1. Remove the items packaged with the freezer, (spare parts or start-
up kit, sample sanitizer, and sanitary lubricant).
THE SPARE PARTS OR START UP
KIT will include; a complete set of replacement
o-rings and rubber seals, o-ring extractor, cleaning brush, a tube of sanitary
lubricant, four sample packages of sanitizer, a spatula, and the Cperation and
Service Manual,
HELPFUL SUGGESTION: Before proceeding with the disassembly of the freezer,
it is recommended that a plastic dish pan be used in which to place the parts.
This will minimize the possibility of misplacing or damaging the various compon-
ent parts.
2: Proceed with the disassembly by removing the dispense head
(Ref. Fig. 61.
PACE 8

Grasp and pull the retaining knob outward. Rotate the knob clockwise one. quarter
turn to unlatch the dispense hezd.
Swing the dispense ?lead open and lift upward removing
it from the hinge pin.
3. Further disassemble the dispense head by removing the fill cover
retaining rod and the plastic fill cover.
To remove the dispense handle and gate cover, carefully unscrew the dispense
handle pivot knob at the left and slowly pull the handle forward releasing the
handle, tension spring and gate cover.
4. Remove the beater from the freezer cylinder with a straight
and forward pull. Slide ihe rubber beater shaft (lip) seal off
of the beater shaft.
5. Using the O-RING EXTRACTOR, remove the large o-ring
from the back of the dispense head, and the gate cover o-ring,
6. The machine is now completely disassembled. The parts will
be washed, rinsed and sanitized- (Ref. Fig. 71,
PACE 9

7. Wash all parts in luke-warm water (80°-8S°F) using a mild
detergent and the cleaning brush provided in the START-
UP KIT.
DO NOT USE HOT WATER FOR PROCESSING
ANY OF THE PLASTIC PARTS
AS DAMAGE TO THE PARTS CAN RESULT.
Rinse the parts in luke-warm water
(80°-ilS°F).
Place the parts in luke-warm water, containing sanitizer, for 2
to 5 minutes. Use the sample sanitizer provided in the STXRT-
UP
i< IT following the manufacturer's directions.
Arrange the parts on a clean, sanitized counter area and allow
to air dry or reassemble wet if desired. DO NOT T,'3WEL
DRY
OR RINSE THE SANITIZED PARTS.
The cylinder walls musi also be washed and rinsed using luke-
warm water
(80°-8S°F), mild detergent, and followed by
wiping with sanitized water. Allow cylinder to air dry or
reassemble wet.
PART IV
ASSEMBLING THE FREEZER
Once the cylinder and parts have been washed, rinsed and sanitized, the
freezer is ready to be re-assembled. Prior to beginning the re-assembly
procedure, sanitize your hands by submerqing in sanitizing solution. Re-
assemble as follows:
PACE 10

A) ASSEMBLING THE BEATER
1. Lubricate and install the BEATER LIP SEAL. Using
the sample sanitary lubricant included in the START-
UP KIT, lightly coat the front and back surfaces of the
seal and slide the seal onto the beater shaft.
2, Insert the BEATER into the freezing cylinder. Hold the
beater horizontal and slide it into the cylinder until
it will
go no further.
Be sure the BEATER LIP SEAL is in place,
.
3. Rotate the BEATER until you feel the drive shaft engage
and push the beater further toward the rear to properly
seat.
B) ASSEMBLING THE DISPENSE HEAD (Ref, Fig. 61.
1. Begin by gathering all of the parts required to assemble
the DISPENSE HEAD. These parts include: one
(1) dispense
head o-ring, dispense head, fill cover, fill cover retaining rod,
gate.cover, gate cover O-ring, tension spring, dispense handle
and retaining knob.
2. Install the o-ring into the gate cover o-ring groove. Lightly
lubricate the o-ring with sanitary lubricant for free move-
ment of the gate cover during dispensing.
3, Position the tension spring between the handle and gate cover
recess and remount the handle onto the pivot stud. Install
the white plastic retaining knob.
4. Re-attach the fill cover to the fill chute by inserting its
retaining rod.
5, Install the dispense head o-ring into the o-ring groove
located on the back side of the head, Lubricate the o-ring
with a light coating of sanitary lubricant.
6, Attach the DISPENSE HEAD to the freezer by guiding the
head pivot onto the hinge pin.
7. Close the dispense head and latch into place with the
retaining knob.
The machine is now completely assembled and ready to be sanitized.
PACE 11

PART V
SANITIZING THE FREEZER
Prior to starting the freezer with the product that will be served, the freezer
must be sanitized-
Sanitizing the freezer
is most important as the procedure retards the growth
of bacteria and insures acceptable product test results when examined by local
Health and/or Agriculture Departments.
The frequency of cleaning and sanitizing cycles must comply with local Health
Regulations. If uncertain about the regulations in your area, contact the local
Board of Health or Department of Agriculture.
To begin the sanitizing process, you
will need a clean pail, wire wisk, and a
soft plastic bristle brush.
1. Mix 2 9z. of sanitizer, STERA SHEEN 'GREEN LABEL
OR EQUIVALENT, (sample packs included in the STXRT-
UP KIT) into a pail containing one gallon of warm water.
Dissolve sanitizer by stirring with a wire wisk, This
formula will make a
200 P.P.M- (parts per million)
concentration of chlorine sanitizing solution.
IMPORTANT: Do not exceed the formula recommended by the sanitizer
manufacturer as it
will not add to its effectiveness,
2. Liftthe fill chute cover and pour the sanitizing solution
into the cylinder until the solution rises in the fill chute.
3. Turn the selector switch to the CLEAN position for 30
seconds (Ref, Fig.
4, PC. 5). The beater will run
allowing the sanitizing solution to come in contact with
all internal product contact areas- During ihe 30 second
CLEAN period, the remainder of the one gallon of sanit-
izing solution should be added filling the fill chute,
4. Turn the selector to ihe OFF position.
5. Using a sanitized soft Srisile brush, brush the dispense
chute, the underside of the fill cnute cover, and the sides
of the fill chute that
will come in contact with product.
Close the fill cover. Allow the sanitizing solution to
remain in contact with the product areas for three
(3)
to five (5) minutes-

6. Place a clean pail under the dispense chute and
slowly raise the dispense handle and gate cover
to drain the sanitizing solution from the cylinder.
7, Allow the sanitizer to drain completely, CIose
the dispense handle,
HELPFUL SUGGESTION: When the sanitizer has stopped flowing from
the dispense head, leave the dispense handle in the OPEN position znd
turn the selector switch to the
CLEAN position for two to ihree seconds
to assist in removal of the last bit of sanitizer.
00 NOT RINSE THE idACHINE WITH FRESH WATER AFTER THE SANITIZING
.PROCESS HAS BEEN COltlPLETEO AS THIS ACTION WOULD COIUPLETELY
NEGATE THE ENTIRE PROCESS.
CAUTION:
It is recommended that the beater be turned as little as possible
during the washing and sanitizing processes as excessive rotation
can result in premature wear of beater blade surfaces;
PART V1
STARTING THE FREEZER.
Only after the machine has been thoroughly cleaned and sanitized is the r'reozer
ready for production of the.initia1 batch,
You have the finest, fastest and most depenazble freezer nanufac:ured,
Congratulations!. You are now re,ady to make hard
ice cream, sherbets, ic-ts,
gelato and more,
.
r
A successful1 retail business depends entirely on the quality of the product it
produces, Therefore you are urged to choose wisely only quality increaients
for the formulation or' your frozen products- Please remember, inexpensive and
inferior ingredients will result in
a similar inferior product and a disatisfed
customer.
Please observe the Following recommendations:
1. Make your mixes from-hi& quality natural products
or obxain from a reliable and trust;vor;hy supplier.
2- 00 not serve the product :o the customer unless its
quali:y and appearance
2r2 entirely sacisfac:ory.

3. 8e sure the machine is kept clean at all times.
4. In the event the freezer requires service, always contact
an authorized
COLD ELITE Technician,
8atch sizes will vary depending on the mix ingredients, desired overrun, etc,,
Experience will be the teacher for judging the desired size of each batch- For
example, when making
ices, a larger quantity of mix may be poured into the
cylinder as the final finished batch
will have less expansion due to minimum
overrun.
The initial quantity of mix to be.poured into the cylinder is a minimum or'
1.7
quarts (54 oz,) and 2.2 quarts 170 oz.1 maximum, As a guide, when charging
the cylinder with mix, the horizontal mix level mark on the dispense head will
indicate a fill of
1.9 quarts 160 oz.).
Prepare
1.7 to 2.2 quarts of liquid mix, approximately 38O to 42OF, in a clean,
'sanitized measuring container.
PART VI1
OPERATING THE FREEZER
1. Pour the mix into the fill chute and close the chute cover.
2. Set the timer to
10 minutes and the selector switch to
PROOUCTION. [Ref. Fig.
4, Pg. 5).
3. Allow the machine to freeze the product to the desired
consisiancy.The timer may produce an audible prior to or
after the completion of the freeze cycle. The
10 min$~te
timer setting is an average. Exact timing must be arrived
at based on the mix used, desired overrun and firmness,
and the consistancy control setting to be discrrssed in
PAST
Vlll TECHNICAL INFORMATION.
4. On the initial batch when the timer sounds at 10 minutes,
turn the selector switch to EXTRACTION. lift the dispense
handle and draw the finished batch from the cylinder into
a sanitized, cold container. After dispensing is complete
return the salector switch to OFF.
Note that the second batch will be made in a lesser time. Again, exact timing
must be concluded based on the desired finished produc-i characteristics.
When working with different flavors, plan the saquence
of batches before hand,
Example, always start with vanilla, possibly cherry vanilla, vanilla chip, followed
by coffee, walnut or other light colored flavors. Naturally, chocolate would be
the final flavor dispensed.
PACE 14

Always remember touse quality ingredients. Producing quality ice creams,
ices or sherbets will guarantee a superior product and a happy customer.
PART
V111
TECHNICAL INFORMATION
A) REFRlCERATION
Compressor: Hermetic, -75 H.P.,
R4C4 Refrigerant
Voltage: 115 Volt, Single Phase,
60 Hertz
FLA: Ampergae = 23
Suction Pressure: 18PSI
Discharge (Head) Pressure: 255 PSI
CooIing System: Air
Refrigerant Charge:
20 0gCB
B) BEATER MOTOR
Voltage: 115 Volt, Single Phase,
60 Hertz, 314 H.P.
H.0.M: Cut-out Amperage
7-6
Overload Cut-out Amperage 8,s
1 ) Adjusting Patch.Temperature
The
LB-1008 uses a Hard-0-Matic system which is referred to as H.0.M-.
This electronic device controls the refrigeration system for the freezing
cylinder by 'sensing' the consistency or hardness of the product inside the
freezing cylinder. No thermostats areused with this-system.
The firmness of the batch product will depend on the setting of the H.O.M.
electronic control-
The compressor must cut off when the current, absorbed by the beater motor,
reaches the amperage indicated on the label in the electrical control box
(H.O.M. Cut-out AMPS). By using an ammeter and clamping around one leg
of the power line feeding the beater motor,
it is possible toread the amperage
drawn by the motor. Factory set cut-out
is
f ,, 6 .MPS.
PACE
15

2) Electronic Hard-0-Matic Control Adjustment
( A5 OF ~ERI~L NuNBZQ ~833)
SETTINGPROCEDURE
The HOM board includes 3 potentiometers PT1, PT2 and PT3,2 pilot lights (LED), one red and one
green, and
8 DIP SWITCHES (see FIG.1).
PT3
\
P:'. \ RED PILOT LIGHT
DIP-S uOk'Ttt rt-
I
GREEN PILOT LIGHT (LED)
MICROPROCESSOR
( Fig. 1 )

In order to set the HOM board, you must first coniigure the DIP SWITCHESaccording to the type of machine.
Seethe table below.
1) Check the Dip switch position (see table
1).
2) Fill the cylinderwith liquid mix and turn the main selectorswitch to the PRODUCTIONmode.
3) Connecta clamp testerona phase of the beater motor to read the current.
MACHINE
LAB lOO/B
4) Setthe machinein Production.
DIP
Voltage &
Phase
115/60/1
1
2 3 4 5 6 7 8
- PT1 Setting :
Don't move it. Its position has no effect.
- PT3 set tin^ :
Turn 20 turns clockwise
- PT2 Setting :
It's the main settingof the HOM board; turningclockwise increasesthe currentwhen the compressor
cuts off.
When the currentof the beater motor reaches a value near the name
plate value, turn the
PT2 trimmer'anticlockwise until the red led
shuts off and the green led lights on.
Turn PT2 slowlvanticlockwiseuntil the compressorstops once vou
reached the 100%of the Beatermotor name plate current.
OFFOFF
P.S.: If the compressormotor never stops it's necessary to make 2 turns through the current transformer
OFF
OFF
PAGE 16.
OFF OFF
ON OFF