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Garland S1000M Service Manual

Manual is about: Manitowoc Ice Machines

Summary of S1000M

  • Page 1

    Thank you for selecting a manitowoc ice machine, the dependability leader in ice making equipment and related products. With proper installation, care and maintenance, your new manitowoc ice machine will provide you with many years of reliable and economical performance. S model s1000m ice machines ...

  • Page 2

    We reserve the right to make product improvements at any time. Specifications and design are subject to change without notice. Safety notices as you work on a s-series ice machine, be sure to pay close attention to the safety notices in this manual. Disregarding the notices may lead to serious injur...

  • Page 3: Table of Contents

    Part no. 80-1559-3 1-1 table of contents section 1 general information model numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 how to read a model number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 ice cube...

  • Page 4

    Table of contents (continued) 1-2 part no. 80-1559-3 section 3 ice machine operation component identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 5

    Table of contents (continued) part no. 80-1559-3 1-3 section 6 electrical system energized parts charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 self-contained water-cooled models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 wiring diag...

  • Page 6

    Table of contents (continued) 1-4 part no. 80-1559-3 cycle time/24 hour ice production/refrigerant pressure charts . . . . . . . . . 7-19 refrigerant recovery/evacuation and recharging . . . . . . . . . . . . . . . . . . . . . 7-20 normal self-contained model procedures . . . . . . . . . . . . . . ....

  • Page 7: Section 1

    Section 1 general information part number 80-1559-3 1-1 section 1 general information model numbers this manual covers the following models: note: model numbers ending in 3 indicate a 3-phase unit. Example: sy1005m3 how to read a model number ice cube sizes self-contained water-cooled sd1003wm sy100...

  • Page 8

    General information section 1 1-2 part number 80-1559-3 accessories contact your manitowoc distributor for these optional accessories: bin caster replaces standard legs. Ice bagger maximize profits from bagged ice sales with this convenient accessory. This sturdy unit rests on the bin door frame, an...

  • Page 9

    Section 1 general information part number 80-1559-3 1-3 model/serial number location these numbers are required when requesting information from your local manitowoc distributor, or manitowoc ice, inc. The model and serial number are listed on the model/ serial number decal affixed to the ice machin...

  • Page 10

    General information section 1 1-4 part number 80-1559-3 owner warranty registration card general the packet containing this manual also includes warranty information. Warranty coverage begins the day your new ice machine is installed. If you do not return your owner warranty registration card, manit...

  • Page 11: Section 2

    Section 2 installation instructions part number 80-1559-3 2-1 section 2 installation instructions general these instructions are provided to assist the qualified installer. Check your local yellow pages for the name of the nearest manitowoc distributor, or call manitowoc ice, inc. For information re...

  • Page 12

    Installation instructions section 2 2-2 part number 80-1559-3 location of ice machine the location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • the location must be free of airborne and other contaminants. • the air t...

  • Page 13

    Section 2 installation instructions part number 80-1559-3 2-3 electrical service general voltage the maximum allowable voltage variation is ±10% of the rated voltage at ice machine start-up (when the electrical load is highest). Fuse/circuit breaker a separate fuse/circuit breaker must be provided f...

  • Page 14

    Installation instructions section 2 2-4 part number 80-1559-3 self-contained electrical wiring connections self contained ice machine 115/1/60 or 208-230/1/60 self contained ice machine 208-230/3/60 self contained ice machine 230/1/50 ! Warning these diagrams are not intended to show proper wire rou...

  • Page 15

    Section 2 installation instructions part number 80-1559-3 2-5 water supply and drain requirements water supply local water conditions may require treatment of the water to inhibit scale formation, filter sediment, and remove chlorine odor and taste. Water inlet lines follow these guidelines to insta...

  • Page 16

    Installation instructions section 2 2-6 part number 80-1559-3 water supply and drain line sizing/connections typical water supply drain installation ! Caution plumbing must conform to state and local codes. Location water temperature water pressure ice machine fitting tubing size up to ice machine f...

  • Page 17

    Section 2 installation instructions part number 80-1559-3 2-7 installation check list is the ice machine level? Has all of the internal packing been removed? Have all of the electrical and water connections been made? Has the supply voltage been tested and checked against the rating on the nameplate...

  • Page 18

    Installation instructions section 2 2-8 part number 80-1559-3 before starting the ice machine all manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment. To ensure proper operation, follow the operational checks in section ...

  • Page 19: Section 3

    Section 3 ice machine operation part number 80-1559-3 3-1 section 3 ice machine operation component identification sv3150 sv3149 check valve ice thickness probe dump valve toggle switch water curtain water distribution tube water level probe water pump water inlet location water inlet valve (located...

  • Page 20

    Ice machine operation section 3 3-2 part number 80-1559-3 sequence of operation note: the toggle switch must be in the ice position and the water curtain must be in place on the evaporator before the ice machine will start. Initial start-up or start-up after automatic shut-off 1. Water purge before ...

  • Page 21

    Section 3 ice machine operation part number 80-1559-3 3-3 harvest sequence 5. Water purge the harvest valve(s) opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator. The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the ...

  • Page 22

    Ice machine operation section 3 3-4 part number 80-1559-3 operational checks general manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment. To ensure proper operation, always follow the operational checks: • when starting ...

  • Page 23

    Section 3 ice machine operation part number 80-1559-3 3-5 harvest sequence water purge the harvest sequence water purge adjustment may be used when the ice machine is hooked up to special water systems, such as a de-ionized water treatment system. • the harvest sequence water purge is factory set fo...

  • Page 24

    Ice machine operation section 3 3-6 part number 80-1559-3 this page intentionally left blank.

  • Page 25: Section 4

    Section 4 maintenance part number 80-1559-3 4-1 section 4 maintenance general you are responsible for maintaining the ice machine in accordance with the instructions in this manual. Maintenance procedures are not covered by the warranty. We recommend that you perform the following maintenance proced...

  • Page 26

    Maintenance section 4 4-2 part number 80-1559-3 guardian™ slime is a leading cause of ice machine breakdowns and biological growth is a health concern. The guardian™ system releases chlorine dioxide on a controlled basis to inhibit the growth of bacteria and fungi that form slime and cause malodors ...

  • Page 27

    Section 4 maintenance part number 80-1559-3 4-3 interior cleaning and sanitizing general clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more frequent cleaning and sanitizing, consult a qualified service company to test the water quality and r...

  • Page 28

    Maintenance section 4 4-4 part number 80-1559-3 sanitizing procedure use sanitizer to remove algae or slime. Do not use it to remove lime scale or other mineral deposits. Step 1 set the toggle switch to the off position after ice falls from the evaporator at the end of a harvest cycle. Or, set the s...

  • Page 29

    Section 4 maintenance part number 80-1559-3 4-5 removal of parts for cleaning/sanitizing 1. Turn off the electrical and water supply to the ice machine (and dispenser when applicable). 2. Remove all ice from the bin. 3. Remove the water curtain and the components you want to clean or sanitize. See t...

  • Page 30

    Maintenance section 4 4-6 part number 80-1559-3 1. Water curtain a. Gently flex the curtain in the center and remove it from the right side. B. Slide the left pin out. Water curtain removal 2. Ice thickness probe a. Compress the hinge pin on the top of the ice thickness probe. Ice thickness probe re...

  • Page 31

    Section 4 maintenance part number 80-1559-3 4-7 3. Water distribution tube note: distribution tube thumbscrews are retained by o- rings to prevent loss. Loosen thumbscrews but do not pull thumbscrews out of distribution tube. Water distribution tube removal a. Remove outer half of distribution tube ...

  • Page 32

    Maintenance section 4 4-8 part number 80-1559-3 water level probe 1. Remove the water trough. 2. The water level probe normally does not require removal for cleaning. The probe can be wiped and cleaned in place or proceed to step 3. 3. Pull the water level probe straight down to disengage. 4. Lower ...

  • Page 33

    Section 4 maintenance part number 80-1559-3 4-9 water dump valve the water dump valve normally does not require removal for cleaning. To determine if removal is necessary: 1. Locate the water dump valve. 2. Set the toggle switch to ice. 3. While the ice machine is in the freeze mode, check the dump ...

  • Page 34

    Maintenance section 4 4-10 part number 80-1559-3 evaporator tray removal 1. Remove the water trough. 2. Remove thumbscrew on left side of tray. 3. Allow left side of tray to drop as you pull the tray to the left side. Continue until the outlet tube disengages from the right side. Drain line check va...

  • Page 35

    Section 4 maintenance part number 80-1559-3 4-11 water inlet valve the water inlet valve normally does not require removal for cleaning. Refer to section 5 for a list of causes for “no water entering water trough” or “water overflows water trough. 1. When the ice machine is off, the water inlet valv...

  • Page 36

    Maintenance section 4 4-12 part number 80-1559-3 removal from service/winterization general special precautions must be taken if the ice machine is to be removed from service for an extended period of time or exposed to ambient temperatures of 32°f (0°c) or below. Follow the applicable procedure bel...

  • Page 37: Section 5

    Section 5 before calling for service part number 80-1559-3 5-1 section 5 before calling for service checklist if a problem arises during operation of your ice machine, follow the checklist below before calling service. Routine adjustments and maintenance procedures are not covered by the warranty. P...

  • Page 38

    Before calling for service section 5 5-2 part number 80-1559-3 safety limit feature in addition to the standard safety controls, such as the high pressure cutout, your manitowoc ice machine features built-in safety limits which will stop the ice machine if conditions arise which could cause a major ...

  • Page 39: Section 6

    Section 6 electrical system part number 80-1559-3 6-1 section 6 electrical system energized parts charts self-contained water-cooled models 1. Initial start-up or start-up after automatic shut-off * not used on all models condenser fan motor the fan motor is wired through a fan cycle pressure contro...

  • Page 40

    Electrical system section 6 6-2 part number 80-1559-3 wiring diagram sequence of operation self-contained models initial start-up or start-up after automatic shut-off 1. Water purge before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds to purge old water f...

  • Page 41

    Section 6 electrical system part number 80-1559-3 6-3 2. Refrigeration system start-up the compressor starts after the 45- second water purge, and it remains on throughout the freeze and harvest cycles. The water fill valve is energized at the same time as the compressor. The harvest valve(s) remain...

  • Page 42

    Electrical system section 6 6-4 part number 80-1559-3 freeze sequence 3. Pre-chill to pre-chill the evaporator, the compressor runs for 30 seconds (60 seconds initial cycle) prior to water flow. The water fill valve remains on until the water level probe is satisfied. Self-contained — pre-chill tabl...

  • Page 43

    Section 6 electrical system part number 80-1559-3 6-5 4. Freeze the water pump starts after the pre- chill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes. The water fill valve will cycle off then on one more time to refill the water trough. When su...

  • Page 44

    Electrical system section 6 6-6 part number 80-1559-3 harvest sequence 5. Water purge the harvest valve(s) opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator. The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the wate...

  • Page 45

    Section 6 electrical system part number 80-1559-3 6-7 6. Harvest the harvest valve(s) remains open and the refrigerant gas warms the evaporator. This causes the cubes to slide, as a sheet, off the evaporator and into the storage bin. The sliding sheet of cubes swings the water curtain out, opening t...

  • Page 46

    Electrical system section 6 6-8 part number 80-1559-3 automatic shut-off 7. Automatic shut-off when the storage bin is full at the end of a harvest cycle, the sheet of cubes fails to clear the water curtain and holds it open. After the water curtain is held open for 30 seconds, the ice machine shuts...

  • Page 47

    Section 6 electrical system part number 80-1559-3 6-9 wiring diagrams the following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine which you are servicing. Wiring diagram legend the following symbols are used on all of the wiring diagra...

  • Page 48

    Electrical system section 6 6-10 part number 80-1559-3 s1000m - self contained - 1 phase sv3130 (89) (55) (88) (42) high pressure cutout water valve harvest valve dump valve water pump terminates at pin connection (20) (21) (22) (74) ice thickness probe water level probe control board (61) (60) (57)...

  • Page 49

    Section 6 electrical system part number 80-1559-3 6-11 s1000m - self contained - 3 phase sv3131 (89) (55) (88) (42) high pressure cutout water valve harvest valve dump valve water pump terminates at pin connection (20) (21) (22) (74) ice thickness probe water level probe control board (61) (60) (57)...

  • Page 50

    Electrical system section 6 6-12 part number 80-1559-3 component specifications and diagnostics main fuse function the control board fuse stops ice machine operation if electrical components fail causing high amp draw. Specifications the main fuse is 250 volt, 7 amp. Check procedure 1. If the bin sw...

  • Page 51

    Section 6 electrical system part number 80-1559-3 6-13 symptoms bin switch fails open • the ice machine will not start with the toggle switch in the ice position, but runs normally with the toggle switch in the clean position. Bin switch fails closed • safety limit 2 is recorded in the control board...

  • Page 52

    Electrical system section 6 6-14 part number 80-1559-3 compressor electrical diagnostics the compressor will not start or will trip repeatedly on overload. Check resistance (ohm) values note: compressor windings can have very low ohm values. Use a properly calibrated meter. Perform the resistance te...

  • Page 53

    Section 6 electrical system part number 80-1559-3 6-15 ptcr diagnostics what is a ptcr? A ptcr (or positive temperature coefficient resistor) is made from high-purity, semi-conducting ceramics. A ptcr is useful because of its resistance versus temperature characteristic. The ptcr has a low resistanc...

  • Page 54

    Electrical system section 6 6-16 part number 80-1559-3 s-model automatic shut-off and restart when the storage bin is full at the end of a harvest cycle, the sheet of cubes fails to clear the water curtain and will hold it open. After the water curtain is held open for 7 seconds, the ice machine shu...

  • Page 55

    Section 6 electrical system part number 80-1559-3 6-17 there are other problems that may cause compressor start-up failure with a good ptcr in a new, properly wired ice machine. • the voltage at the compressor during start-up is too low. Manitowoc ice machines are rated at ±10% of nameplate voltage ...

  • Page 56

    Electrical system section 6 6-18 part number 80-1559-3 diagnosing start components if the compressor attempts to start, or hums and trips the overload protector, check the start components before replacing the compressor. Capacitor visual evidence of capacitor failure can include a bulged terminal e...

  • Page 57

    Section 6 electrical system part number 80-1559-3 6-19 ice/off/clean toggle switch function the switch is used to place the ice machine in ice, off or clean mode of operation. Specifications single-pole, single-throw switch. The switch is connected into a varying low d.C. Voltage circuit. Check proc...

  • Page 58

    Electrical system section 6 6-20 part number 80-1559-3 electronic control board control board sv3129 ac line voltage electrical plug (numbers marked on wires) main fuse (7a) automatic cleaning system (aucs) plug ice thickness probe (3/16'' connection) water level probe dc low voltage electrical plug...

  • Page 59

    Section 6 electrical system part number 80-1559-3 6-21 general s-model control boards use a dual voltage transformer. This means only one control board is needed for both 115v and 208-230v use. Safety limits in addition to standard safety controls, such as the high pressure cut-out, the control boar...

  • Page 60

    Electrical system section 6 6-22 part number 80-1559-3 ice thickness probe (harvest initiation) how the probe works manitowoc’s electronic sensing circuit does not rely on refrigerant pressure, evaporator temperature, water levels or timers to produce consistent ice formation. As ice forms on the ev...

  • Page 61

    Section 6 electrical system part number 80-1559-3 6-23 diagnosing ice thickness control circuitry ice machine does not cycle into harvest when water contacts the ice thickness control probe step 1 bypass the freeze time lock-in feature by moving the ice/off/clean switch to off and back to ice. Step ...

  • Page 62

    Electrical system section 6 6-24 part number 80-1559-3 water level control circuitry water level probe light the water level probe circuit can be monitored by watching the water level light. The water level light is on when water contacts the probe, and off when no water is in contact with the probe...

  • Page 63

    Section 6 electrical system part number 80-1559-3 6-25 diagnosing water level control circuitry problem: water trough overfilling during the freeze cycle step 1 start a new freeze sequence by moving the ice/ off/clean toggle switch to off, then back to ice. (if water flows with the switch off, check...

  • Page 64

    Electrical system section 6 6-26 part number 80-1559-3 problem: water will not run into the sump trough during the freeze cycle step 1 verify water is supplied to the ice machine, and then start a new freeze sequence by moving the ice/ off/clean toggle switch to off then back to ice. Step 2 wait unt...

  • Page 65

    Section 6 electrical system part number 80-1559-3 6-27 diagnosing an ice machine that will not run ! Warning high (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing control board fuse or moving the toggle switch to off will not remove the power supplied to ...

  • Page 66

    Electrical system section 6 6-28 part number 80-1559-3 s1000m - self contained - 1 phase with terminal board sv2071 2 1 3 4 5 6.

  • Page 67: Section 7

    Section 7 refrigeration system part number 80-1559-3 7-1 section 7 refrigeration system sequence of operation self-contained water -cooled models figure 7-1. Self-contained prechill and freeze cycle prechill refrigeration sequence no water flows over the evaporator during the prechill. The refrigera...

  • Page 68

    Refrigeration system section 7 7-2 part number 80-1559-3 figure 7-2. Self-contained harvest cycle harvest cycle refrigeration sequence hot gas flows through the energized harvest valve, heating the evaporator. The harvest valve is sized to allow the proper amount of refrigerant into the evaporator. ...

  • Page 69

    Section 7 refrigeration system part number 80-1559-3 7-3 operational analysis (diagnostics) general when analyzing the refrigeration system, it is important to understand that different refrigeration component malfunctions may cause very similar symptoms. Also, many external factors can make good re...

  • Page 70

    Refrigeration system section 7 7-4 part number 80-1559-3 before beginning service ice machines may experience operational problems only during certain times of the day or night. A machine may function properly while it is being serviced, but malfunctions later. Information provided by the user can h...

  • Page 71

    Section 7 refrigeration system part number 80-1559-3 7-5 installation/visual inspection checklist water system checklist a water-related problem often causes the same symptoms as a refrigeration system component malfunction. Water system problems must be identified and eliminated prior to replacing ...

  • Page 72

    Refrigeration system section 7 7-6 part number 80-1559-3 ice formation pattern evaporator ice formation pattern analysis is helpful in ice machine diagnostics. Analyzing the ice formation pattern alone cannot diagnose an ice machine malfunction. However, when this analysis is used along with manitow...

  • Page 73

    Section 7 refrigeration system part number 80-1559-3 7-7 3. Extremely thin at evaporator inlet there is no ice, or a considerable lack of ice formation at the inlet of the evaporator. Examples: the ice at the outlet of the evaporator reaches 1/8" to initiate a harvest, but there is no ice formation ...

  • Page 74

    Refrigeration system section 7 7-8 part number 80-1559-3 safety limits general in addition to standard safety controls, such as high pressure cut-out, the control board has two built in safety limit controls which protect the ice machine from major component failures. Safety limit #1:if the freeze t...

  • Page 75

    Section 7 refrigeration system part number 80-1559-3 7-9 safety limit #1 refer to previous page for safety limit operation. Freeze time exceeds 60 minutes for 6 consecutive freeze cycles. Safety limit notes • because there are many possible external problems, do not limit your diagnosis to only the ...

  • Page 76

    Refrigeration system section 7 7-10 part number 80-1559-3 safety limit #2 refer to page 7-8 for safety limit operation. Harvest time exceeds 3.5 minutes for 500 consecutive harvest cycles. Safety limit notes • because there are many possible external problems, do not limit your diagnosis to only the...

  • Page 77

    Section 7 refrigeration system part number 80-1559-3 7-11 analyzing discharge pressure during freeze or harvest cycle procedure 1. Determine the ice machine operating conditions: air temp. Entering condenser ______ air temp. Around ice machine ______ water temp. Entering sump trough ______ 2. Refer ...

  • Page 78

    Refrigeration system section 7 7-12 part number 80-1559-3 analyzing suction pressure during freeze cycle the suction pressure gradually drops throughout the freeze cycle. The actual suction pressure (and drop rate) changes as the air and water temperatures entering the ice machine change. This affec...

  • Page 79

    Section 7 refrigeration system part number 80-1559-3 7-13 freeze cycle suction pressure high checklist freeze cycle suction pressure low checklist note: do not limit your diagnosis to only the items listed in the checklists. Possible cause check/correct improper installation see “installation/visual...

  • Page 80

    Refrigeration system section 7 7-14 part number 80-1559-3 single expansion valve ice machines - comparing evaporator inlet and outlet temperatures note: this procedure will not work on the dual expansion valve ice machines. The temperatures of the suction lines entering and leaving the evaporator al...

  • Page 81

    Section 7 refrigeration system part number 80-1559-3 7-15 harvest valve temperature check general a harvest valve requires a critical orifice size. This meters the amount of hot gas flowing into the evaporator during the harvest cycle. If the orifice is even slightly too large or too small, long har...

  • Page 82

    Refrigeration system section 7 7-16 part number 80-1559-3 how to use the refrigeration system operational analysis tables general these tables must be used with charts, checklists and other references to eliminate refrigeration components not listed on the tables and external items and problems whic...

  • Page 83

    Section 7 refrigeration system part number 80-1559-3 7-17 refrigeration system operational analysis tables s models single expansion valve this table must be used with charts, checklists and other references to eliminate refrigeration components not listed on the table and external items and problem...

  • Page 84

    Refrigeration system section 7 7-18 part number 80-1559-3 pressure control specifications and diagnostics high pressure cut-out (hpco) control function stops the ice machine if subjected to excessive high- side pressure. The hpco control is normally closed, and opens on a rise in discharge pressure....

  • Page 85

    Section 7 refrigeration system part number 80-1559-3 7-19 cycle time/24 hour ice production/ refrigerant pressure charts these charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • refer to “operational anal...

  • Page 86

    Refrigeration system section 7 7-20 part number 80-1559-3 refrigerant recovery/evacuation and recharging normal self-contained model procedures refrigerant recovery/evacuation do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommen...

  • Page 87

    Section 7 refrigeration system part number 80-1559-3 7-21 self-contained charging procedures 1. Be sure the toggle switch is in the off position. Figure 7-8. Charging connections 2. Close the vacuum pump valve, the low side service valve, and the low side manifold gauge valve. 3. Open the high side ...

  • Page 88

    Refrigeration system section 7 7-22 part number 80-1559-3 figure 7-9. Recovery/evacuation connections x x x schraeder fitting quick connect discharge line control valve head pressure remote condenser closed scale open recovery unit vacuum pump/ service valve 1/2 open receiver manifold set open drier...

  • Page 89

    Section 7 refrigeration system part number 80-1559-3 7-23 system contamination clean-up general this section describes the basic requirements for restoring contaminated systems to reliable service. Determining severity of contamination system contamination is generally caused by either moisture or r...

  • Page 90

    Refrigeration system section 7 7-24 part number 80-1559-3 mild system contamination cleanup procedure 1. Replace any failed components. 2. If the compressor is good, change the oil. 3. Replace the liquid line drier. Note: if the contamination is from moisture, use heat lamps during evacuation. Posit...

  • Page 91

    Section 7 refrigeration system part number 80-1559-3 7-25 10. Follow the normal evacuation procedure, except replace the evacuation step with the following: a. Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psi (35 kpa .35 bar) . B....

  • Page 92

    Refrigeration system section 7 7-26 part number 80-1559-3 figure 7-10. Using pinch-off tool sv1406.

  • Page 93

    Section 7 refrigeration system part number 80-1559-3 7-27 filter-driers the filter-driers used on manitowoc ice machines are manufactured to manitowoc specifications. The difference between manitowoc driers and off-the- shelf driers is in filtration. Manitowoc driers have dirt- retaining filtration,...

  • Page 94

    Refrigeration system section 7 7-28 part number 80-1559-3 refrigerant definitions recover to remove refrigerant, in any condition, from a system and store it in an external container, without necessarily testing or processing it in any way. Recycle to clean refrigerant for re-use by oil separation a...

  • Page 95

    Section 7 refrigeration system part number 80-1559-3 7-29 refrigerant re-use policy manitowoc recognizes and supports the need for proper handling, re-use, and disposal of, cfc and hcfc refrigerants. Manitowoc service procedures require recapturing refrigerants, not venting them to the atmosphere. I...

  • Page 96

    Refrigeration system section 7 7-30 part number 80-1559-3 hfc refrigerant questions and answers manitowoc uses r-404a and r-134a hfc refrigerants with ozone depletion potential (odp) factors of zero (0.0). R- 404a is used in ice machines and reach-in freezers and r-134a is used in reach-in refrigera...

  • Page 97

    Section 7 refrigeration system part number 80-1559-3 7-31 this page intentionally left blank.

  • Page 98

    Refrigeration system section 7 7-32 part number 80-1559-3 this page intentionally left blank.

  • Page 100

    Attend a manitowoc factory service school • improve your service techniques • network with your peers • 4 1/2 days of intensive training on manitowoc ice machines • extensive “hands on” training on a variety of equipment • breakfast, lunch and hotel room included with tuition • contact your distribu...