Scotsman FME800R Manuel de service télécharger pdf (Page 32)

To Replace the Evaporator:

(Assuming all the steps for removal of the thrust

bearing, breaker, auger, and water seal have been

performed.)

1. Discharge and recover the refrigerant from the

ice maker.

2. Unsweat the refrigerant connections:

a) At the thermostatic expansion valve outlet.

//////////////////////////////CAUTION///////////////////////////

Heat sink the TXV body when unsweating or

resweating the adjacent tubing.

//////////////////////////////////////////////////////////////////////////

b) At the suction line at the joint about 3" from the

evaporator.

3. Remove the evaporator.

4. Unsweat the drier from the liquid line.

5. After installing a new water seal in the new

evaporator ( see “To Replace the Water Seal”)

resweat the tubing connections.

6. Install an new drier in the liquid line.

7. Evacuate the system until dehydrated, then

weigh in the nameplate charge. Check for leaks.

8. Install auger, breaker, breaker bearing

assembly, and ice discharge chute in reverse

order of disassembly. See “To Reassemble

Evaporator and Auger”

To Reassemble the Evaporator and Auger

1. After the gearmotor has been inspected, fasten

the evaporator to the gear motor, be sure 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 barrel,

slightly turning it to match up with the drive end.

Do Not Drop Into the Evaporator.

3. Complete the reassembly by reversing the

disassembly for the breaker & thrust bearing

assembly.

PLACE A BEAD OF

FOOD GRADE

SEALANT HERE

REMOVAL AND REPLACEMENT: Evaporator

Head Pressure Control Valve

1. Recover system of refrigerant

2. Break off process tube on the top of the OLD

head pressure control valve.

3. Unsweat old valve from tubing.

4. Unsweat old dryer from tubing.

5. Install new valve in place, check for correct

connections and be sure the number on the side of

the valve is “180"

6. Wrap the new valve body in wet cloths to heat

sink the valve body.

7. Sweat in the new valve and the new dryer.

8. Evacuate the system, and weigh the nameplate

charge into the receiver.

FME800R

June 1994

Page 32

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Scotsman FME800R Manuel de service Page 32

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