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FOR THE INSTALLER

Installation Limitations:
This ice system is designed to be installed
indoors, in a controlled environment:

Min

Max

Air Temperature

50

0

F

100

0

F

(Not including the remote condenser)
Water Temperature

40

0

F

100

0

F

Water Pressure

20 PSIG

80 PSIG

Voltage

-5%

+10% 

(Compared to the nameplate)

Operating the machine outside of the
limitations is misuse and can void the warranty.
Water Limitations:
An ice machine is a food manufacturing plant;
it takes a raw material, water, and turns it into
a food product, ice. The purity of the water is
very important in obtaining pure ice and in
maximizing product life. This is not intended
as a complete resource for water related
questions, but it does offer these general
recommendations:
1. Check with a water treatment specialist for
a water test, and recommendations regarding
filters and treatment.
2. In most cases, the water used to make ice
should be filtered or treated, depending upon
the water. 

There is no one type of water filter

that will be effective in all situations.

 That is

why a water test is important. 

Scotsman Ice Systems are designed and
manufactured with the highest regard for
safety and performance.  They meet or
exceed the standards of UL, NSF, and CSA.
Scotsman assumes no liability or responsibility
of any kind for products manufactured by
Scotsman that have been altered in any way,
including the use of any part and/or other
components not specifically approved by
Scotsman.
Scotsman reserves the right to make design
changes and/or improvements at any time.
Specifications and design are subject to
change without notice.

1.25"

21.12"

Drain

3/4"
FPT

Typical Storage Bin - B90

NM1850R

September, 1992

Page 3

Содержание NM1850R

Страница 1: ...oring ice and water level a thermostatic expansion valve and R 502 as the refrigerant TABLE OF CONTENTS For the Installer Specifications 2 Location 5 Remote Condenser 6 For the Plumber 9 For the Elect...

Страница 2: ...18 8 There are two separate ice making and refrigeration systems in this model The liquid and discharge lines from each system must go to separate circuits in one remote condenser RC1052 Minimum Circu...

Страница 3: ...Check with a water treatment specialist for a water test and recommendations regarding filters and treatment 2 In most cases the water used to make ice should be filtered or treated depending upon th...

Страница 4: ...RT 625 Precharged line set 25 R 502 2 required Or RT 640 Precharged line set 40 R 502 2 required DIMENSIONS H X W X D MODEL USE WITH MINIMUM CIRC AMPACITY BASIC ELECTRICAL RC1052 27 8 X 22 X 37 94 1 N...

Страница 5: ...ling later Return the bin to the upright position remove paper covering the bin gasket Install the bin top according to the directions with the bin top Note Do not push bin into position but lift it t...

Страница 6: ...s 1 Each set of precharged refrigerant lines either 25 foot or 40 foot consists of a 3 8 inch diameter liquid line and a 1 2 inch diameter discharge line Both ends of each line have quick connect coup...

Страница 7: ...n resistance is felt 4 Using a marker or pen mark a line lengthwise from the coupling union nut to the bulkhead Then tighten the coupling and additional 1 4 turn As the nut turns the line will show wh...

Страница 8: ...STALLER Location REMOTE CONDENSER EXCESS PRECHARGED TUBING INSIDE BUIDLING ICEMAKER SERVICE ACCESS SERVICE ACCESS SIDE AND BACK ROOF CUTAWAY WALL CUTAWAY CONTACT ROOFING CONTRACTOR NM1850R September 1...

Страница 9: ...gravity type and 1 4 inch per foot fall is an acceptable pitch for the drain tubing There should be a vent at the highest point of the drain line and the ideal drain receptacle would be a trapped and...

Страница 10: ...he compressor and the fan motor operates whenever the compressor operates Electrical connections are made at the junction box at the back of the icemaker and at the junction box on the remote condense...

Страница 11: ...PRECHARGED REFRIGERANT TUBING A typical installation should generally appear as illustrated below The remote condenser must be located above the icemaker and the precharged lines installed per the ins...

Страница 12: ...pressure a minimum of 20 psig 7 Has the machine been secured to the bin 8 Is there a water shut off valve installed near the machine 9 Is the remote condenser installed per local building codes and i...

Страница 13: ...The electrical start up sequence is now on automatic A There should be a short 15 second delay before the gearmotor starts B After the gearmotor starts the liquid line valve will open the low pressur...

Страница 14: ...e Ice Discharge Chute Directs the ice produced by the evaporator into the storage bin Ice Level Sensor An electronic eye it senses the presence of ice in the bottom of the ice discharge chute Operates...

Страница 15: ...ircuit board Pump Down Control An automatic reset pressure switch connected to the low side of the refrigeration system Controls the compressor Potential Relay The compressor start relay On Off Switch...

Страница 16: ...15 seconds bin full At that point the bin empty light goes out and the machine shuts down Shut Down consists of The liquid line solenoid closes lowering the suction pressure The pump down control open...

Страница 17: ...he float valve The water them goes out the bottom of the reservoir tanks to the bottom of the evaporators Reservoir overflow or evaporator condensation is combined into a common drain line and routed...

Страница 18: ...vaporator warmer evaporators get more refrigerant and colder evaporators get less At the evaporator the refrigerant enters an area of relatively low pressure where it can easily boil off or evaporate...

Страница 19: ...h a small amount of discharge gas going into the receiver to maintain pressure until the head pressure is built back up to the rated gauge pressure of 220 psig At that pressure the valve opens up the...

Страница 20: ...is stopped by the closed liquid line valve This action forces the refrigerant into the receiver and keeps it out of the compressor The pump down continues until the low pressure control turns the com...

Страница 21: ...f swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN 7 Prepare the cleaning...

Страница 22: ...times per year Check the breaker bearing by removing the ice chute cover unscrewing the ice sweep removing the water shed unscrewing the breaker cover left hand thread unscrewing the auger stud Inspec...

Страница 23: ...t For more information on removal and replacement of these parts see REMOVAL AND REPLACEMENT Shut off water and electrical supply 1 To remove the auger remove the front and top panels 2 Remove 3 hex s...

Страница 24: ...intaining a head pressure above 220 psig If the unit has the correct charge and the condenser is clean and the refrigerant lines are not kinked or twisted and the condenser is not overheated by extern...

Страница 25: ...lace the circuit board If the bin full light on the tester is ON move the tester switch to bin empty the light on the tester should go OFF and the bin empty light on the circuit board should go ON If...

Страница 26: ...eplace in the machine b Check for low charge add some refrigerant if the unit begins to operate normal low side pressure being about 30 psig stop and look for a leak repair replace the drier evacuate...

Страница 27: ...restricted defective or not adjusted properly If needed replace the TXV evacuate and recharge per nameplate 4 Check the insulation on the evaporator It should be dry with no wet spots or frost If the...

Страница 28: ...aker 8 Reverse to reassemble BIN CONTROLS Ice Level Sensors 1 Disconnect electrical power 2 Remove front panel 3 Remove control box cover 4 Locate ice chute at the base of the chute in front of and be...

Страница 29: ...g breaker to evaporator d Lift up and remove breaker bearing assembly from auger evaporator 6 Service the bearing Check for rust rough spots and damage a The bearing is pressed into the breaker to rem...

Страница 30: ...stainless breaker cover from breaker left hand threads b Unscrew auger stud from top of auger c Unscrew 4 allen head cap screws holding breaker to evaporator d Lift up on breaker to remove from auger...

Страница 31: ...ater seal down against it 3 The part of the water seal that rotates with the auger must also be replaced Remove the old part from the auger and clean the mounting area 4 Place a small bead of food gra...

Страница 32: ...e that the number of shims indicated on the gear case cover is in place between the gearcase cover and the drip pan gasket Torque the bolts to 110 inch pounds 2 Lower the auger into the evaporator bar...

Страница 33: ...INGS GASKET GEARCASE DRIVE MOTOR BEARING SEAL WATER SHED SEAL REMOVAL AND REPLACEMENT Gearmotor Assembly WARNING Disconnect Electrical Power Before Begining Note There are two gearmotors in each NM185...

Страница 34: ...overfill Note The gears and bearings are available only as pressed together sets D After replacing parts as required if any reassemble the gearcase The two smaller gears and the oil should be in the...

Страница 35: ...that the ice level sensors are properly aligned clean and not obstructed use the tester as follows Bin Control Note All testing is done with the electrical power on the master switch on and all reset...

Страница 36: ...replace the circuit board b Move the water switch on the tester to the Water position The No Water light on the board should go OFF If not replace the circuit board If the light does go off replace t...

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