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Scotsman SCE170, Руководство пользователя

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Scotsman SCE170 Скачать руководство пользователя страница 26

Removal and Replacement: Purge Valve

Removal:

1. Unplug unit.

2. Open bin door, remove hood fasteners and pull
hood from ice machine.

3. Remove one screw and pump shield.

4. Loosen 2 screws (1/4" hex head) holding pump
to bracket.

5. Disconnect discharge hose from pump, water
distributor and valve.

6. Pull pump up and out of the machine. Retain for
re-installation.

7. Remove curtain, set aside for re-installation.

8. Shut water off.

9. Loosen float valve retaining nut, slide float valve
to the right and allow to hang by the incoming
water line.

10. Remove plug from under reservoir and drain
the reservoir.

11. Unclip curtain sensor.

12. Remove reservoir support fastener from left
end of reservoir.

13. Remove lower pump bracket bolt, and loosen
upper pump bracket bolt.

14. Remove pump bracket and set aside; lower
reservoir into bin.

15. Locate electrical power plug to purge valve
coil, remove plug.

Curtain Sensor

Pump

Bracket

Bolts

Plug

Electrical shock hazard.
Electrical shock can
cause personal injury.
Disconnect power before
beginning to service
components.

SCE170

October 1998

Page 26

Содержание SCE170

Страница 1: ...chine from its installed position The refrigeration system uses HP62 as the refrigerant Parts lists and wiring diagrams are located in the center of this manual printed on yellow paper 6JKU OCPWCN YCU...

Страница 2: ...e Air 10 see page 18 SCE170A 1C SAME SAME SAME Air 10 see page 18 SCE170W 1A SAME SAME SAME Water 10 see page 18 SCE170W 1C SAME SAME SAME Water 10 see page 18 SCE170A 6C same 230 50 1 SAME Air 5 1150...

Страница 3: ...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 appro...

Страница 4: ...y greatly in ability and function Install one that filters out suspended solids to a dimension of 5 microns or less The finer the filter the better but finer filters may plug up sooner than course one...

Страница 5: ...and must have a minimum fall of 1 4 per foot of horizontal run The water cooled condenser drain should not be vented and is routed separately Maintain the air gap required by local code between the en...

Страница 6: ...within the minimum and maximum temperatures specified 2 Has the water supply been connected 3 Is the water pressure adequate 4 Have the water connections been checked for water leaks 5 Have the drain...

Страница 7: ...be lifted up Caution the door will be free to come out the back of the hood when removed from the cabinet base 4 To remove the cabinet base the hood must be removed first 5 Remove 4 screws and the tw...

Страница 8: ...orator Curtain Water distributor Behind the right front grill on the front edge of the control box Control box with cube size control adjustment ON OFF CLEAN switch Manual Harvest switch Purge switch...

Страница 9: ...he reservoir s concentration of minerals that remain after water is made into ice High Pressure Cut Out This is a switch that opens to stop the ice machine when the internal refrigeration pressures be...

Страница 10: ...ps water out thru the purge drain If no water flows out correct drain and or check valve 6 Switch the ON OFF CLEAN switch to ON 7 On air cooled models the fan motor will begin to turn and warm air wil...

Страница 11: ...be deeper than 1 16 inch If needed adjust the bridge thickness by rotating the adjustment screw of the cube size control Rotate the adjustment screw 1 8 turn at a time Turn it clockwise to make the b...

Страница 12: ...and connecting power to the Hot gas valve coil opening the valve Purge valve coil opening the valve Harvest Shut Off The machine stays in the harvest cycle until the curtain is opened by the passage...

Страница 13: ...er or if torn or so dirty it can t be cleaned replace with a new filter 5 Return the filter to its installed position 6 Replace the bracket removed in step 2 7 Replace the grills Do not operate the un...

Страница 14: ...still present repeat steps 6 9 one more time Note The ice making portion of the water system should be sanitized after cleaning by repeating steps 7 9 except substitute an approved sanitizing solution...

Страница 15: ...and left inside wall 2 Unscrew and remove the two knobs 3 Pull the hood assembly and door straight out from the ice machine Note the door may be then be removed from the back of the hood Use an appro...

Страница 16: ...eservoir Melted ice and water spills into the bin flow through a drain in the base of the bin to the exterior drain connection at the back of the cabinet During the Harvest Cycle the Purge valve opens...

Страница 17: ...When the refrigerant evaporates it absorbs heat from the metal parts of the evaporator and the water flowing over it From the evaporator the refrigerant flows back to the compressor through the sucti...

Страница 18: ...of 7 minutes after which the machine returns to the freeze cycle Typical Low Side Pressure in harvest 85 100 PSIG Typical Discharge Pressure in harvest 195 210 PSIG Hi Pressure Cut Out Cuts Out at 45...

Страница 19: ...d up Clean water system Unit in CLEAN or Harvest cycle Switch ON OFF CLEAN switch to OFF and then ON No ice is made nothing operates No power Reconnect power ON OFF CLEAN switch in OFF position Switch...

Страница 20: ...cube size control Cube size set too large Adjust cube size control Hot gas valve will not open Coil of valve open replace Valve will not open replace Unit freezes but will not try to harvest Cube siz...

Страница 21: ...Purge valve leaks thru Clean or replace purge valve Compressor cycles on and off Compressor overheats Low on refrigerant Repair leak evacuate and weigh in nameplate charge Air cooled fan not blowing...

Страница 22: ...ater pump unplugged Or the low side pressure should be about 31 32 PSIG The cube size control should then close its contacts and cause the Timed Freeze Light on the control board to be ON If it cannot...

Страница 23: ...he bin 3 Pull the hood off the bin Note the bin door will come out the back of the hood when the hood is removed from the bin 4 Remove screw and pump shield 5 Unplug the pump from its connection at th...

Страница 24: ...rather than replaced 1 Shut off the water supply 2 Open the bin door 3 Remove the pump shield 4 Unscrew the compression fitting at the top of the float and pull the water inlet tube out of the valve 5...

Страница 25: ...nnection near control box unplug and remove assembly from unit 7 Reverse to reassemble Note Bin control sensor must be full seated in the slot and the pin snapped into the matching hole in the bracket...

Страница 26: ...alve retaining nut slide float valve to the right and allow to hang by the incoming water line 10 Remove plug from under reservoir and drain the reservoir 11 Unclip curtain sensor 12 Remove reservoir...

Страница 27: ...e Pull coil up and off valve 20 Open valve Rotate stem CCW as far as it goes Lift stem up and off valve Pull up on plunger do not loose spring 21 Examine seat plunger for dirt damage Clean and reassem...

Страница 28: ...Align the tube so that the inner distributor tube s holes are opposite the outer distributor tube s holes 9 Place the end caps onto the water distributors 10 Place the distributor tube onto the mount...

Страница 29: ...efrigeration system R 404A is a Near Azeotrope so liquid charging is required Weigh in as liquid as much of the charge as possible into the discharge line Install a sight glass between the manifold an...

Страница 30: ...nifold valve full open 8 Watch the scale when the correct charge is shown shut the manifold valve Note If all of the charge will not go in the discharge side A Shut the discharge access valve at the i...

Страница 31: ...epaired This system has a critical charge it must be recharged with the correct amount of refrigerant as listed on the nameplate of the ice machine or performance will suffer Anytime the refrigeration...

Страница 32: ...ned to the skid The bolts securing the ice machine to the skid screw in from the bottom To remove Use part of the carton as a cushion and tip the ice machine onto its back Remove the bolts holding the...

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