McQuay M4LC Specifiche Pagina 130
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Diagnostic Guidelines
By means of pressure readings:
Data Pressure
Circuit
Too low
A little low
Normal
A little high
Too high
Probable cause
High side
Low side
•
•
1. Overcharged with refrigerant.
2. Non-condensable gases in refrigerant circuit (e.g. air)
3. Obstructed air-intake / discharge.
4. Hot air short circuiting in outdoor unit.
High side
Low side
•
•
1. Poor compression / no compression (compressor
defective)
2. Reversing valve leaking.
High side
Low side
•
•
1. Undercharged with refrigerant.
2. Refrigerant leakage.
3. Air filter clogged / dirty (indoor unit).
4. Indoor fan locked / seized.
5. Defective defrost control, outdoor coil freeze up (heating).
6. Outdoor fan locked / seized (heating).
High side
Low side
•
•
1. Outdoor fan blocked (cooling).
2. Outdoor coil dirty (cooling).
3. Indoor fan locked / seized (heating).
4. Indoor air filter clogged / dirty (heating).
5. Non-condensable gases in refrigerant circuit (e.g. air)
High side
Low side
•
•
1. Air intake temperature of indoor unit too high.
168
- Ceiling Convertible 1
- Split Systems 1
- Table of ContentsContents 3
- O A P C A 6
- LC 020 C R 5 M 6
- G E F A 7
- LC 030 C R 4 M 7
- Outdoor Unit 10
- MLC Product Line Up (R22) 10
- M4LC Product Line Up (R407C) 11
- M5LC Product Line Up (R410A) 11
- Caution : 13
- Refrigerant Circuit Diagram 14
- MODEL: MCM 025D – MLC 025C 14
- Model : MCM 030D – MLC 028C 15
- Model : MCM 030D – MLC 030C 15
- MCM 040D – MLC 035 / 040C 15
- MCM 050D – MLC 050C 15
- MCM 062C – MLC 061C 15
- M5CM 050D – M5LC 050C 16
- M5CM 062C – M5LC 061C 16
- Model : MCM 020DR – MLC 020CR 16
- Model : MCM 025DR – MLC 025CR 17
- Model : MCM 030DR – MLC 028CR 17
- Model : MCM 062CR – MLC 061CR 19
- G7 Remote Controller 20
- Wired Remote Control - SLM 22
- Phsae Sequencer 23
- Installation 24
- MCM-D MCM 062C 25
- MCM 062C 26
- MCM-D MCM 062C 26
- Figure C 26
- Figure D 26
- Figure I 28
- Figure J 28
- (3) Refrigerant Piping 30
- 4) Wiring 31
- (5) Vacuuming and Charging 31
- (6) Additional Charge 31
- R22 - Nil 32
- R410A - Nil 32
- (6) Overall Checking 37
- Microphone 38
- MCM 020D/DR NC CURVES 39
- MCM 025D/DR NC CURVES 39
- MCM30D/DR NC CURVES 40
- MCM 040D/DR NC CURVES 40
- MCM 050D/DR NC CURVES 41
- MCM 062C/CR NC CURVES 41
- Components Data (R22) 56
- Components Data (R410A) 66
- Safety Devices 70
- R22 Models 78
- Model : MCM 020D / MLC 018C 78
- Model : MCM 020D / MLC 020B 78
- Model : MCM 020D / MLC 020C 79
- Model : MCM 025D / MLC 025B 79
- Model : MCM 025D / MLC 025C 80
- Model : MCM 030D / MLC 028C 80
- Model : MCM 030D / MLC 030C 81
- Model : MCM 040D / MLC 035C 81
- Model : MCM 040D / MLC 040C 82
- Model : MCM 050D / MLC 050C 82
- Model : MCM 062C / MLC 061C 83
- Model : MCM 025DR / MLC 025BR 86
- Model : MCM 025DR / MLC 025CR 87
- Model : MCM 030DR / MLC 028CR 88
- Heating Mode 88
- Model : MCM 030DR / MLC 030CR 89
- Model : MCM 040DR / MLC 035CR 90
- Model : MCM 040DR / MLC 040CR 91
- Model : MCM 050DR / MLC 050CR 92
- Model : MCM 062CR / MLC 061CR 93
- Model : MCM 020D / M4LC 020B 94
- Model : MCM 025D / M4LC 025B 94
- Model : MCM 030D / M4LC 030C 95
- Model : MCM 040D / M4LC 035C 95
- Model : MCM 040D / M4LC 040C 96
- Model : MCM 050D / M4LC 050C 96
- Model : MCM 062C / M4LC 061C 97
- R407C Models 100
- (Heatpump) 100
- Cooling Mode 100
- Heating Mode 100
- Heating Mode 103
- R410A Models 105
- (Cooling only) 105
- Model : M5CM 040D / M5LC 035C 105
- Model : M5CM 040D / M5LC 040C 105
- Model : M5CM 050D / M5LC 050C 106
- Model : M5CM 062C / M5LC 061C 106
- Indoor Unit 111
- Model : MCM - D SERIES 111
- Model : MCM 062C/CR 112
- Model : MLC 018C 113
- M5LC 035 / 040 / 050C/CR 114
- Pre Start Up Maintenance 127
- For MLC Outdoor Models 128
- Diagnostic Guidelines 130
- 14°C to 20°C. * 133
- Model : MCM 020 / 025 D/DR 134
- Model : MCM 030 D/DR 135
- Model : MCM / M5CM 062 C/CR 137
- Model : MLC 018 / 020C 138
- Model : MLC 025 / 028C 139
- Model : MLC 020CR 140
- Model : MLC 025 / 028CR 141
- Model : MLC / M4LC 020 / 025B 142
- 2006 McQuay International 145
- ContentsContents 146
- Contents 146
- PRODUCT LINE UP 149
- OUTDOOR UNIT 150
- MLC-C SERIES PRODUCT LINE UP 150
- M5LC-C SERIES PRODUCT LINE UP 151
- Caution : 153
- REFRIGERANT CIRCUIT DIAGRAMS 154
- MODEL : MCM 025E - MLC 025C 154
- M5CM 028E - M5LC 028C 154
- MODEL : MCM 028E - MLC 028C 155
- MODEL : MCM 028E - MLC 030C 155
- MODEL : M5CM 028E - M5LC 035C 156
- M5CM 025ER - M5LC 025CR 157
- MODEL : MCM 028ER - MLC 030CR 158
- CONTROLLERS 160
- SLM AC-5300 (OPTIONAL) 161
- COOL DRY FAN HEAT 162
- Wired Remote Control – SLM 163
- Phase Sequencer 163
- INSTALLATION 164
- Figure A 164
- Under ceiling type 165
- Floor standing type 165
- Floor standing installation 167
- To Adjust the Vane Direction 170
- INSTALLATION CLEARANCE 171
- (3) REFRIGERANT PIPING 172
- (4) WIRING 173
- (5) VACUUMING AND CHARGING 173
- (6) ADDITIONAL CHARGE 173
- (7) OVERALL CHECKING 174
- Dip-pipe 176
- Invert cylinder 176
- COMPONENTS DATA (R22) 191
- COMPONENTS DATA (R410A) 199
- SAFETY DEVICES 205
- Example: 209
- Solution: 209
- PERFORMANCE TABLES 213
- R22 MODELS 214
- (COOLING ONLY) 214
- MODEL : MCM 020E / MLC 020C 214
- MODEL : MCM 025E / MLC 025C 214
- MODEL : MCM 028E / MLC 028C 215
- MODEL : MCM 028E / MLC 030C 215
- HEATING MODE 217
- (HEATPUMP) 217
- MODEL : MCM 020ER / MLC 018CR 217
- COOLING MODE 217
- R410A MODELS 222
- MODEL : M5CM 015E / M5LC 015C 222
- MODEL : M5CM 028E / M5LC 028C 224
- MODEL : M5CM 028E / M5LC 035C 225
- INDOOR UNIT 233
- MCM 015/020/025/028E/ER 233
- M5CM 015/020/025/028E/ER 233
- MLC / M5LC 015 C/CR 233
- MLC 030C/CR 234
- M5LC 035C/CR 234
- MLC 018C/CR 234
- MLC 020/025/028C/CR 234
- M5LC 020/025/028C/CR 234
- COOLING ONLY 243
- MODEL: MCM / M5CM 015E 243
- MODEL: MLC / M5LC 015C 243
- MODEL: MCM / M5CM 020/025E 244
- MODEL: MLC 018C 244
- MLC / M5LC 020/025C 244
- MODEL: MCM / M5CM 028E 245
- MODEL: MLC / M5LC 028C 245
- MODEL: MCM 028E 246
- MODEL: MLC 030C 246
- MODEL: M5CM 028E 247
- MODEL: M5LC 035C 247
- HEATPUMP 248
- MODEL: MCM / M5CM 015ER 248
- MODEL: MLC / M5LC 015CR 248
- MODEL: MCM / M5CM 020/025ER 249
- MODEL: MLC 018CR 249
- MLC / M5LC 020/025CR 249
- MODEL: MCM / M5CM 028ER 250
- MODEL: MLC / M5LC 028CR 250
- MODEL: MCM 028ER 251
- MODEL: MLC 030CR 251
- MODEL: M5CM 028ER 252
- MODEL: M5LC 035CR 252
- 3 PHASE / 50Hz / 380 - 415V 253
- MODEL: MLC / M5LC 025 / 028C 264
- MODEL: MLC / M5LC 025 / 028CR 267
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