Name: Manitowoc J250
Brand: Manitowoc
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Section 2 Installation References

2-15

Typical Single Circuit Remote Condenser Installation

SV1184

SINGLE CIRCUIT

REMOTE

CONDENSER

DISCHARGE

LINE

LIQUID

LINE

ELECTRICAL

DISCONNECT

NOTE:

BORE A 2.5” DIAMETER HOLE IN

THE ROOF OR WALL FOR

TUBING.

SEAL WITH TAR OR PITCH.

SLOPE TO PREVENT ENTRANCE

OF MOISTURE

ELECTRICAL

DISCONNECT

ELECTRICAL

SUPPLY

ICE

MACHINE

BIN

LIQUID

REFRIGERANT

LINE

DISCHARGE

REFRIGERANT

LINE

36.00”

DROP

Default Chapter2
- Safety Notices2
- Table of Contents3
Section 1 - Warranty9
Coverage9
Section 2 - Installation References11
- (Refer to Installation Manual for Complete Installation Guidelines) Dimensions Ice Machines11
  - Ice Storage Bins13
  - Remote Condensers15
Location of Ice Machine16
Heat of Rejection16
Electrical Fuse Size/Circuit Ampacity17
Electrical Wiring Connections19
- Self-Contained Electrical Connections19
- Remote Electrical Connections20
Water Connections and Drains21
Cooling Tower Applications (Water-Cooled Models)22
Remote Condenser/Line Set Installation23
- Remote Ice Machines Refrigerant Charge23
- Routing Line Sets24
- Calculating Remote Condenser Installation Distances25
Usage with Non-Manitowoc Multi-Circuit Condensers27
- Warranty27
- Line Set Routing and Sizing27
- Head Pressure Control Valve27
- Fan Motor27
- Internal Condenser Volume28
- Condenser ∆T28
- Refrigerant Charge28
- Quick-Connect Fittings28
Section 3 - Maintenance30
Component Identification30
Operational Checks31
- Water Level Check31
- Ice Thickness Check31
Cleaning the Condenser32
- Air-Cooled Condenser (Self-Contained and Remote Models)32
- Water-Cooled Condenser and Water Regulating Valve33
Interior Cleaning and Sanitizing General34
- Cleaning Procedure34
- Sanitizing Procedure34
- Procedure to Cancela Self-Cleaning or Sanitizing Cycle after It Has Started35
- Removal of Parts for Cleaning/Sanitizing37
Water Treatment/Filtration43
Removal from Service/Winterization General44
- Self-Contained Air-Cooled Ice Machines44
- Water-Cooled Ice Machines44
- Remote Ice Machines44
Section 5 - Water System Ice Making Sequence of Operation46
Section 4 - Ice Machine Sequence of Operation46
Self-Contained Air- and Water-Cooled46
Initial Start-Up or Start-Up after Automatic Shut-Off46
Freeze Cycle47
Harvest Cycle47
Automatic Shut-Off47
Section 6 - Electrical System52
Energized Parts Charts52
- Self-Contained Air- and Water-Cooled Models52
- Remote Models53
Wiring Diagram Sequence of Operation54
- Self-Contained Models54
- Electrical System55
- Remote Models61
Wiring Diagrams68
- Wiring Diagram Legend68
- Old Style Self-Contained - J200/J250/J320 - 1 Phase69
- Old Style Self-Contained - J420/J450/J600/J800/J1000 - 1 Phase70
- Old Style Self-Contained - J800/J1000 - 3 Phase71
- Old Style Self-Contained - J1300/J1800 - 1 Phase72
- Old Style Self-Contained - J1300/J1800 - 3 Phase73
- Old Style Remote - J450/J600/J800/J1000 - 1 Phase74
- Old Style Remote - J800/J1000 - 3 Phase75
- Old Style Remote - J1300/J1800 - 1 Phase76
- Old Style Remote - J1300/J1800 - 3 Phase77
- New Style Self-Contained - J200/J250/J320 - 1 Phase78
- New Style Self-Contained - J420/J450/J600/J800/J1000 - 1 Phase79
- New Style Self-Contained - J800/J1000 - 3 Phase80
- New Style Self-Contained - J1300/J1800 - 1 Phase81
- New Style Self-Contained - J1300/J1800 - 3 Phase82
- New Style Remote - J450/J600/J800/J1000 - 1 Phase83
- New Style Remote - J800/J1000 - 3 Phase84
- New Style Remote - J1300/J1800 - 1 Phase85
- New Style Remote - J1300/J1800 - 3 Phase86
Component Specifications and Diagnostics87
- Fuses87
- Bin Switch87
- Compressor Electrical Diagnostics89
- PTCR Diagnostics90
- Discharge Line Thermistor94
- Ice/Off/Clean Toggle Switch95
- Control Board Relays96
- Electronic Control Board (Old Style)97
- Electronic Control Board (New Style)98
Section 6 - Electrical System (Cont.)87
Ice Thickness Probe (Harvest Initiation) General101
- How the Probe Works101
- Freeze Time Lock-In Feature101
- Maximum Freeze Time101
- Installation of New Probe on Old Style Control Board101
- Diagnosing Probe Control Circuitry102
  - Ice Machine Cycles into Harvest before Water Contact with Probe102
  - Ice Machine Does Not Cycle into Harvest When Water Contacts Probe103
Diagnosing Ice Machine that will Not Run104
Section 7 - Refrigeration System106
Sequence of Operation SELF-CONTAINED AIR or WATER-COOLED MODELS106
- Remote Models108
- J1300/J1800 Refrigeration Tubing Schematics111
Operational Analysis (Diagnostics) General113
- Before Beginning Service114
- Ice Production Check114
- Installation/Visual Inspection Checklist115
- Water System Checklist115
- Ice Formation Pattern116
- Safety Limits118
- Hot Gas Valve Temperature Check122
- Single Expansion Valve Ice Machines Comparing Evaporator Inlet and Outlet Temperatures123
- Analyzing Discharge Pressure During Freeze or Harvest Cycle Procedure124
  - Freeze Cycle Discharge Pressure High Checklist124
  - Freeze Cycle Discharge Pressure Low Checklist124
- Analyzing Suction Pressure During Freeze Cycle125
- How to Use the Refrigeration System Operational Analysis Tables127
- Refrigeration System Operational Analysis Tables129
- Remotes Only131
  - Harvest Pressure Regulating (H.P.R.) System131
Section 7 - Refrigeration System (Cont.)131
- Headmaster Control Valve133
Pressure Control Specifications and Diagnostics135
- Fan Cycle Control135
- High Pressure Cutout (HPCO) Control135
Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts J200136
- J250137
- J320138
- Operating Pressures139
- J600140
- J800142
- J1000143
- J1300145
- J1800146
Refrigerant Recovery/Evacuating and Recharging149
- Normal Remote Model Procedures151
- System Contamination Cleanup155
- Replacing Pressure Controls Without Removing Refrigerant Charge157
- Filter-Driers159
- Total System Refrigerant Charges159
- Refrigerant Definitions160
- Refrigerant Re-Use Policy161
- HFC Refrigerant Questions and Answers162

Manitowoc J250 User Manual

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Questions and Answers:

Manitowoc J250 Specifications

Related product manuals

Brand	Manitowoc
Model	J250
Category	Ice Maker
Language	English