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Page 23

Page 23

At restart, from any tripping OFF at Bin Full, the
new PC Board assures 45 seconds water filling
phase so to refill the water sump up to the
maximum level.
In case of malfunction of the Optical Ice Level
Control, thenew PC Board switch ON alternativelt
the Yellow and Red Led continuously.

On the PC Board there are four jumpers to
select:
• "no remind" or 12 months remind time for the

water system cleaning

• Operation of the  Purge Out Water Pump

(Jump IN on EC series)

• "no delay" or 60 minutes delay time at first start

up

• TEST

In case the TEST contacts are closed with the
Jumper, at the Start Up of the machine the PC
Board energizes all the electrical components for
maximum 3 minutes time.
At the end of the 3 minutes the PC Board switch
OFF the entire machine with the blinking of all the
LED's as shown on the bottom drawing.

E.

PUSH BUTTON OPERATION

DURING WATER FILLING PHASE

•  Push for more then 2” but less then 5” the
machine enters in Cleaning Mode

•  Push for more then 5” the machine by-pass the
Water Filling Phase

DURING FREEZING/HARVEST CYCLE

•  Push for more then 5” during the Freezing
cycle the machine goes immediately into
Harvest

•  Push for more then 5” during the Harvest cycle
the machine enters immediately in the Freezing
cycle

SYEN

CONDENSER

SENSOR

EVAPORATOR

SENSOR

ON STEADY

BLINKING

JUMP OUT - EC SERIES

JUMP IN Ð AC SERIES

WATER SYSTEM

CLEANING REMIND

JUMP OUT - 12 MONTHS

JUMP IN Ð NO REMIND

START UPDELAY TIME

JUMP OUT Ð 60Õ DELAY

JUMP IN - NO DELAY

TEST

The length of Harvest is equal to:

•35” if Push Button is activated before -
15

°

C evaporating temperature LED

activation

•As per Harvest cycle chart,  if Push Button
is activated after -15

°

C evaporating

temperature LED activation (Red LED inside
PC Board ON steady)

F.

LED MEANING

GREEN LED ON
Unit under power

YELLOW BIN FULL LED ON
Unit shut-OFF at storage bin full
YELLOW BIN FULL LED BLINKING
Infrared beam break out

RED ALARM LED ON
Too hi condensing temperature
RED ALARM LED BLINKING
Too hi evaporating temperature

YELLOW FREEZING CYCLE ON
Unit in freezing cycle mode

YELLOW FREEZING LED AND RED ALARM
LED ON
Condenser sensor out of order
YELLOW FREEZING LED AND RED ALARM
LED BLINKING
Evaporator sensor out of order

FREEZING CYCLE

BIN FULL

POWER

TOO HI EVAP TEMP

TOO HI COND TEMP

PUSH
BUTTON

PUSH
BUTTON

Содержание MXG 327

Страница 1: ...39 02 93960 1 Aut Sel Telefax 39 02 93550500 Direct Line to Service Parts Phone 39 02 93960350 Fax 39 02 93540449 Website www scotsman ice it E Mail scotsman europe scotsman it ISO 9001 Cert n 0080 M...

Страница 2: ...ETE APRES LE TEST CAVALIER TEST FERME MACCHINA NELLA FASE LAVAGGIO O FERMA DOPO IL TEST PONTICELLO TEST CHIUSO ON STEADY FIXE FISSO BLINKING CLIGNOTANT LAMPEGGIANTE CONDENSER SENSOR OUT OF ORDER SONDE...

Страница 3: ...ter supply and drain connections Final check list Installation practice OPERATING INSTRUCTIONS Start up Operatiobnal checks OPERATING PRINCIPLES How it works Freezing cycle Harvest cycle Control seque...

Страница 4: ...Page 3 Page 3...

Страница 5: ...shown are indicating the production of M medium and L large models For S small models ice production is approx 10 lower Important operating requirements MIN Air temperature 10 C 50 F Water temperatur...

Страница 6: ...16 3 x 230 50 1 7 3 x SPECIFICATIONS MXG 327 MACHINE SPECIFICATIONS Starts Electric power cons amps Kwh x 24 HR Cubes per harvest 72 Large 106 Medium 198 Small At 21 C 70 F water temperature MXG 327...

Страница 7: ...harts shown are indicating the production of M medium and L large models For S small models ice production is approx 10 lower Important operating requirements MIN Air temperature 10 C 50 F Water tempe...

Страница 8: ...9 3 x 1 5 m m2 16 N MXG 427 AS 6 Air Stainless steel MXG 427 WS 6 Water Stainless steel Model Cond unit Finish Water req lt 24 HR SPECIFICATIONS 432 MXG 427 MACHINE SPECIFICATIONS Starts Electric powe...

Страница 9: ...harts shown are indicating the production of M medium and L large models For S small models ice production is approx 10 lower Important operating requirements MIN Air temperature 10 C 50 F Water tempe...

Страница 10: ...9 3 x 1 5 m m2 16 N SPECIFICATIONS MXG 437 MACHINE SPECIFICATIONS Starts Electric power cons amps Kwh x 24 HR Cubes per harvest 72 Large 106 Medium 198 Small At 21 C 70 F water temperature MXG 437 AS...

Страница 11: ...it from the skid Save the two bolts and nuts to mount the machine on storage bin or on top of another Modular Cuber GENERAL INFORMATION AND INSTALLATION 6 Remove all internal support packing and mask...

Страница 12: ...ter supply line and the unit Water supply Water cooled models The water cooled versions of SCOTSMAN Ice Makersrequiretwoseparateinletwatersupplies one for the water sprayed for making the ice cubes an...

Страница 13: ...5 Has the voltage been tested and checked against the data plate rating 6 Has the water supply pressure been checked to ensure a water pressure of at least 1 bar 14 psi 7 Havetheboltsholdingthecompre...

Страница 14: ...wash off any dirt that can have deposited in it during the unit off period Fig 1 B During the water filling operation check to see that the incoming water dribbles through the evaporator platen dribb...

Страница 15: ...out of operation or shortage of water in the water cooled condenser the condenser tem perature rises and when it reaches 70 C 160 F for air cooled version or 60 C 140 F for water cooled version the c...

Страница 16: ...RANSF DATA PROCESSOR ELECTR TIMER DIP SWITCH ELECTRONIC CARD L N RELAYS RELAY TRIAC WATER DRAIN VALVE FIG 4 16 15 14 13 2 1 7 8 9 10 3 4 5 6 11 12 Rx Tx WATER IN VALVE HOT GAS VALVE CONTACTOR COIL FAN...

Страница 17: ...ube size Small Medium Large It is possible however to modify the timed length of the freezing cycle by changing the DIP SWITCH keys setting In Table B of PRINCIPLE OF OPERATION are shown the various t...

Страница 18: ...wing of the same LED to monitor the BIN FULL situation Fig 6 Remove ice cubes out from the ice level control sensors to allow the resumption of the light beam Water inlet valve is energized for 45 sec...

Страница 19: ...d through the suction line In both the accumulator and the suction line it exchanges heat with the refrigerant flowing into the capillary tube warmer before to be sucked in the compressor and to be re...

Страница 20: ...Page 18 Page 18...

Страница 21: ...o switch off the unit in case the condensingtemperatureriseuptomorethen 70 C for air cooled version or more then 62 C for water cooled version for one of the following abnormal reasons CLOGGED CONDENS...

Страница 22: ...vaporator temperature sensor factory pre set is the same for all the models and is not adjustable Once completed the freezing cycle 2nd phase the system goes automatically into the defrost cycle which...

Страница 23: ...e RED LED placed in the front of the P C BOARD This lighting up occures usually in the mid period of the freezing cycle and signals the switching from the first to the second phase of the freezing cyc...

Страница 24: ...eparated printed circuits one at high and the other at low voltage integrated with fuse on power out 6 3 A of four aligned LEDS monitoring the operation of the machine of one extra monitoring RED LED...

Страница 25: ...EEZING HARVEST CYCLE Push for more then 5 during the Freezing cycle the machine goes immediately into Harvest Push for more then 5 during the Harvest cycle the machine enters immediately in the Freezi...

Страница 26: ...h allow to set up the micro processor program in order to extend or to shorten the length of freezing cycle in relation tothedifferentmodelandversionsoficemachines The DIP SWITCH first four keys setti...

Страница 27: ...o parts the valve body and the valve coil Locatedonthehotgasline thisvalveisenergized through the micro processor of P C BOARD during the defrost cycle and as well during the water filling phase Durin...

Страница 28: ...kthecorrisponding length of freezing cycle 2nd phase on Table B 3 Change the same DIP SWITCH KEYS settingsothatitwillcorrespondtothecombination on table B pre ceding the one remarked at step 2 This wi...

Страница 29: ...Page 27 Page 27 WIRING DIAGRAM MXG 327 427 437 A 230 50 1...

Страница 30: ...Page 28 Page 28...

Страница 31: ...f order Replace it Red alarm LED blink Freezing or Bin Full LED Ice Level Control out of order Replace it Red alarm LED blink alternatively Compressor cycles intermittently Low voltage Check circuit f...

Страница 32: ...mp Hot gas solenoid valve leaking Replace valve Short of refrigerant Charge to data plate indication Discharge head pressure too high See incorrect discharge pressure Poor harvest Restriction in incom...

Страница 33: ...individual useroperation Continuouscheckoftheclarity of ice cubes and visual inspection of the watersprayingpartsbeforeandaftercleaning will indicate frequency and procedure to be followed in local ar...

Страница 34: ...T OF THE REACH OF CHILDREN 4 Scoop out all the ice cubes stored into the bin in order to prevent them from being contaminated with the cleaning solution then flush out the water from the sump reservoi...

Страница 35: ...then turn the main switch to OFF disconnect unit from POWER 14 Flush out the rinsing solution from the sump reservoirs 15 Place again the evaporator cover and the unit service panels 16 Give POWER to...

Страница 36: ...tes 21 Place again the evaporator cover and the unit service panels 22 At completion of the freezing and harvest cycle make sure of proper texture and clearness of the ice cubes and that they do not h...

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