Advantage Engineering Maximum Manuale utente
I.O.M. #058 1/03
INSTRUCTION MANUAL • INSTALLATION • OPERATION • MAINTENANCE
Covering
Air-Cooled models
from 5 to 30 tons
with ‘HE’ Instruments
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, IN 46142
317-887-0729 fax: 317-881-1277
Service Department fax: 317-885-8683
www.AdvantageEngineering.com
e-mail: [email protected]
INSTRUCTION MANUAL
MAXIMUM ‘MK’
HE INSTRUMENT
AIR-COOLED MODELS
COVERING
INSTALLATION
OPERATION
MAINTENANCE
ADVANTAGE ENGINEERING, INC. 525 East Stop 18 Road Greenwood, IN 46142
317-887-0729 fax: 317-881-1277 Service Department fax: 317-885-8683
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 4
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
TABLE OF CONTENTS
1.0 GENERAL 7
1.1 Introduction 8
1.2 Unit location for air cooled models 8
1.3 Unit location for water cooled models 8
1.4 Efficiency 8
1.5 Safety 9
1.6 Clean air act 9
1.7 Miscellaneous 9
2.0 INSTALLATION 11
2.1 General 12
2.2 To and From process connections 12
2.3 Water supply connection 13
2.4 Air cooled condenser 13
2.5 Electrical connection 14
3.0 OPERATIONS 17
3.1 General 18
3.2 Start up/operations procedure 19
3.3 Instrument/operation 24
3.4 Shut down procedure 31
4.0 TROUBLESHOOTING 33
4.1 Sensors 34
4.2 Process/evaporator pump 34
4.3 Compressor 34
4.4 Low flow 34
4.5 Blower/fan 34
4.6 High pressure 35
4.7 Low pressure 35
4.8 Water level 35
4.9 Freezestat 36
4.10 Oil pressure 36
4.11 Crankcase heater 36
4.12 Electronics 36
5.0 MAINTENANCE 37
5.1 Warranty service procedure 38
5.2 Periodic preventative maintenance 38
5.3 Special maintenance 39
5.4 Solenoid valve service 40
5.5 Pump seal service 42
5.6 Checking the refrigerant charge 45
5.7 Proper cleaning procedure for brazed plate evaporators 45
5.8 DIP switch adjustment 47
5.9 Display / Keyboard Operation 49
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 5
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
6.0 COMPONENTS 51
6.1 Water system 52
6.2 Refrigeration system 52
7.0 RELATED DRAWINGS 55
7.1 Mechanical schematic - 5 / 7.5 / 10 tons 56
7.2 Mechanical schematic - 15 / 20 /25 / 30 57
7.3 Physical - 5 tons 58
7.4 Physical - 7.5 / 10 tons 59
7.5 Physical - 15 / 20 / 25 / 30 tons 60
7.6 Duct schematic for air cooled chillers 61
7.7 Electrical 62
8.0 APPENDIX 63
8.1 Specifications 64
8.2 Model # and suffix coding 65
8.3 Operations below 48°F 66
8.4 Water quality control 67
8.5 Inhibited propylene glycol 68
8.6 Sensor current vs temperature 68
8.7 Pressure-temperature chart for R-22 refrigerant 69
8.8 Chiller capacity and derate chart 70
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THIS PAGE INTENTIONALLY BLANK
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
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ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
1.0 GENERAL
1.1 INTRODUCTION
1.2 UNIT LOCATION
1.3 EFFICIENCY
1.4 SAFETY
1.5 CLEAN AIR ACT
1.6 MISCELLANEOUS
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 8
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
1.1 INTRODUCTION
A. This manual covers most ‘MK’ series portable chillers with air-cooled
condensers, from 5 to 30 tons.
B. When calling for assistance from the ADVANTAGE Service
Department, it is important to know the model and serial number
of the particular unit. The model number encodes critical unit
information which is helpful in any attempt to troubleshoot
operating difficulties. The serial number allows the service team to
locate manufacturing and testing records which can have additional
information relating to a particular unit.
1.2 UNIT LOCATION
A. The unit is designed for indoor use only. For most efficient
operation, locate the chiller in a clean, dry and well ventilated
environment.
B. The unit has an air cooled refrigerant condenser. For air cooled
condensers, a motor driven fan (on models from 5 to 15 tons) or a
centrifugal blower (on models from 15 to 30 tons) generates air
flow through the condenser to remove heat from the refrigerant
system. The air cooled condenser on the unit will discharge a
maximum of 15,000 BTU’s per hour per ton of cooling.
C. The unit must have a minimum entering air temperature of 60°F
and a maximum entering air temperature of 95°F for efficient
operation.
D. The unit must have a minimum of two feet clearance at the air
intake and six feet at the vertical exhaust air discharge.
E.The unit must have all enclosure panels in place before operating
compressor. Air will not be drawn through the condenser coil if
they are not in place. This will cause the compressor to lockout on
the high pressure safety fault.
1.3 EFFICIENCY
A. Long term efficiency of operation is largely determined by proper
maintenance of the mechanical parts of the unit and the water
quality. ADVANTAGE recommends filtering where required to
prevent solids from plugging critical parts (pumps, heaters, seals for
example). ADVANTAGE highly recommends the services of a
competent water treatment specialist be obtained and his
recommendations followed. ADVANTAGE accepts no responsibility
for inefficient operation, or damage caused by foreign materials or
failure to use adequate water treatment.
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 9
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
1.4 SAFETY
A. It is important to become thoroughly familiar with this manual and
the operating characteristics of the unit.
B. It is the owner’s responsibility to assure proper operator training,
installation, operation, and maintenance of the unit.
C. Observe all warning and safety placards applied to the chiller.
Failure to observe all warnings can result in serious injury or death
to the operator and severe mechanical damage to the unit.
1.5 CLEAN AIR ACT
A. The unit contains HCFC-22 (chlorodifloromethane). This is a class 2
substance.
B. Effective July 1, 1992, it is unlawful for any person in the course of
maintaining, servicing, repairing, or disposing of refrigeration
equipment to knowingly vent or otherwise dispose of any class 2
substance used as a refrigerant in the manner which permits such
substance to enter the atmosphere.
C. De minimis releases associated with good faith attempts to
recapture, reclaim or recycle such substance shall not be subject to
the prohibition set forth in the preceding paragraph.
1.6 MISCELLANEOUS
A. The unit is designed to circulate temperature stabilized fluid
through the process resulting in process temperature control.
B. The ability of the unit to maintain process temperature control is
significantly affected by the method of installation as outline in
section 2 of this manual.
C. If the operator has any questions concerning the location and
operation of the unit, contact the ADVANTAGE Service Department
at 317-887-0729.
MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
Page: 10
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
MK-10A shown
Air Cooled Condenser
Caster
Stainless Steel Frame
Electrical Cabinet
Instrument (LE shown)
Pressure Gauges
Protective Fan Shroud
Caster
Liquid Receiver
Compressor
Liquid Line Solenoid
Refrigerant Site Glass
Flow Switch
Fan Motor
Protective Fan Shroud
Air Discharge
Pressure Gauges (not visible)
Instrument (not visible)
Hot Gas Bypass Valve
Pump
Expansion Valve
Insulated Reservoir Tank
Indice
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