ASTM F1075-97(2023)

Standard Specification for Dehumidifier, Shipboard, Mechanically Refrigerated, Self-Contained

ABSTRACT
This specification covers the performance requirements and corresponding test procedures for self-contained shipboard dehumidifiers that use hermetic refrigerant motor-compressors. The components of the dehumidifier, including the motor-compressor, condensing unit, dehumidifying coil, air-circulating fan, and accessories, shall all be enclosed within a metal cabinet. Dehumidifiers shall be evaluated by design capacity test, overload test, inclination test, and corrosion resistance test, and should operate satisfactorily as specified. Requirements for design documentation, schematic drawings, and manufacturer's manual are also considered.
SCOPE
1.1 This specification covers self-contained dehumidifiers using hermetic refrigerant motor-compressors.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 11, of this specification:  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Nov-2023
• ICS: 47.020.85 - Cargo spaces
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Replaces: ASTM F1075-97(2018) - Standard Specification for Dehumidifier, Shipboard, Mechanically Refrigerated, Self-Contained
• Effective Date: 01-Dec-2023
• Refers: ASTM B117-19 - Standard Practice for Operating Salt Spray (Fog) Apparatus
• Effective Date: 01-Nov-2019

Overview

ASTM F1075-97(2023), published by ASTM International, specifies the requirements and testing procedures for shipboard, self-contained, mechanically refrigerated dehumidifiers utilizing hermetic refrigerant motor-compressors. This standard ensures that all key components-including the motor-compressor, condensing unit, dehumidifying coil, air-circulating fan, and accessories-are housed within a durable metal cabinet. The purpose of this standard is to ensure reliable dehumidification performance in challenging maritime environments, supporting vessel safety, equipment protection, and efficient moisture control.

Key Topics

• Scope and Applicability

  • Covers self-contained dehumidifiers designed for shipboard use
  • Focuses on equipment with hermetic refrigerant motor-compressors
  • Stipulates requirements using inch-pound units as standard

• Design and Construction

  • All components must be enclosed in a metal cabinet
  • Requires the use of corrosion-resistant materials and finishes
  • Units must be compatible with variable shipboard conditions, including vibration and shock

• Performance and Testing

  • Specifies design capacity, overload, inclination, and corrosion resistance tests
  • Dehumidifiers must condense a minimum specified amount of water over 24 hours under defined conditions
  • Units must operate correctly at varying temperatures and humidity levels, and under inclination

• Documentation and Quality Assurance

  • Mandates comprehensive design documentation, including master drawings and schematic diagrams
  • Detailed requirements for manuals and installation guides
  • Sampling and inspection processes are defined to assure quality conformance

• Safety and Compliance

  • Emphasizes adherence to safety standards (such as UL 474, UL 984, and ASHRAE 15)
  • Requires proper labeling, packaging, and protection during shipment

Applications

Shipboard dehumidifiers conforming to ASTM F1075-97(2023) play a crucial role in:

• Vessel Interior Protection:
  Preventing moisture buildup to protect sensitive equipment, cargo, and crew living spaces from corrosion, mold, and other humidity-related damage.

• Naval and Commercial Ships:
  Ensuring reliability and safety in demanding marine environments, meeting specific military and commercial shipping requirements.

• Retrofit and New Builds:
  Suited for both new vessel constructions and retrofitting into existing ships due to standardized dimensions and integration requirements.

• Quality Assurance in Maritime Supply Chains:
  Supporting procurement and maintenance teams with clear specifications for selection, inspection, and ongoing care of dehumidifying equipment.

A well-installed, tested dehumidifier compliant with ASTM F1075-97(2023) ensures operational efficiency, longer equipment life, and optimal shipboard conditions.

Related Standards

Understanding ASTM F1075-97(2023) in a broader context involves reference to several other key standards:

• UL 474: Dehumidifiers
• UL 984: Hermetic Refrigerant Motor-Compressor Units
• ASHRAE 15: Safety Code for Mechanical Refrigeration
• ASTM B117: Practice for Operating Salt Spray (Fog) Apparatus
• ASTM B280: Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service
• ASTM D1654/D2247: Coating and humidity resistance tests
• MIL-S-901: Shock tests for shipboard machinery
• MIL-STD-167-1: Mechanical vibrations for shipboard equipment

These related standards bolster the reliability, safety, and longevity of shipboard dehumidifier systems and are frequently cited for regulatory and contractual compliance.

Summary

By adhering to ASTM F1075-97(2023), ship operators, manufacturers, and procurement specialists ensure that shipboard dehumidifiers deliver robust, consistent performance in harsh marine environments, helping safeguard assets and maintain vessel readiness. This standard is an essential point of reference for anyone involved in marine environmental control, maritime engineering, or fleet maintenance.

Keywords: ASTM F1075-97, shipboard dehumidifier, self-contained dehumidifier, marine humidity control, hermetic refrigerant motor-compressor, maritime standards, corrosion resistance, shipboard equipment testing

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1075 − 97 (Reapproved 2023) An American National Standard
Standard Specification for
Dehumidifier, Shipboard, Mechanically Refrigerated, Self-
Contained
This standard is issued under the fixed designation F1075; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 ASHRAE Standards:
ASHRAE 15 Safety Code for Mechanical Refrigeration
1.1 This specification covers self-contained dehumidifiers
2.3 Offıcial Classification Standards:
using hermetic refrigerant motor-compressors.
Uniform Freight Classification Ratings, Rules, and Regula-
1.2 The values stated in inch-pound units are to be regarded tions
as standard. The values given in parentheses are mathematical 2.4 UL Standards:
conversions to SI units that are provided for information only UL 474 Dehumidifiers
and are not considered standard. UL 984 Hermetic Refrigerant Motor—Compressors
2.5 Military Documents:
1.3 The following safety hazards caveat pertains only to the
MIL-S-901 Specification Requirements for Shock Tests,
test methods portion, Section 11, of this specification: This
High Impact (H.I.); Shipboard Machinery, Equipment,
standard does not purport to address all of the safety concerns,
and Systems
if any, associated with its use. It is the responsibility of the user
MIL-STD-167-1 Mechanical Vibrations of Shipboard
of this standard to establish appropriate safety, health, and
Equipment, (Type I—Environmental and Type II—
environmental practices and determine the applicability of
Internally Excited)
regulatory limitations prior to use.
MIL-D-19947 Specification for Dehumidifier, Space, Me-
1.4 This international standard was developed in accor-
chanically Refrigerated, Self-Contained, Naval Shipboard
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 3. Ordering Information
Development of International Standards, Guides and Recom-
3.1 Orders for products under this specification shall include
mendations issued by the World Trade Organization Technical
the following information, as necessary, to describe adequately
Barriers to Trade (TBT) Committee.
the desired product:
3.1.1 Title, ASTM designation, and year of issue,
2. Referenced Documents
3.1.2 Quantity (number of dehumidifiers),
3.1.3 Certification if required, and
2.1 ASTM Standards:
3.1.4 Additions to the specification and supplementary
B117 Practice for Operating Salt Spray (Fog) Apparatus
requirements, if required.
B280 Specification for Seamless Copper Tube for Air Con-
ditioning and Refrigeration Field Service
4. Materials and Manufacture
D1654 Test Method for Evaluation of Painted or Coated
4.1 In addition to the requirements cited in this
Specimens Subjected to Corrosive Environments
specification, the dehumidifiers covered by this specification
D2247 Practice for Testing Water Resistance of Coatings in
shall be designed, constructed, assembled, and tested to com-
100 % Relative Humidity
ply with UL 474, UL 984, and ASHRAE 15. In the event of
1 3
This specification is under the jurisdiction of ASTM Committee F25 on Ships Available from American Society of Heating, Refrigerating, and Air-
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
Machinery and Piping Systems. 30329, http://www.ashrae.org.
Current edition approved Dec. 1, 2023. Published December 2023. Originally Available from Uniform Classification Agent, Tariff Publication Officer, Room
approved in 1987. Last previous edition approved in 2018 as F1075 – 97 (2018). 1106, 222 South Riverside Plaza, Chicago, IL 60606.
DOI: 10.1520/F1075-97R23. Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or WA 98607-8542, http://www.ul.com.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1075 − 97 (2023)
differences between any of the requirements of this specifica- 4.9 Provision shall be made in the frame to permit securing
tion and those of other referenced documents, the requirements the cabinet to any appropriate surface.
of this specification shall govern. The manufacturer shall
4.10 Identification plates shall be of a nonferrous metal or
certify compliance with the above standards for equipment
corrosion-resisting steel and shall conform to UL 474.
furnished and shall be cited in the UL Electrical Appliance and
Utilization Equipment product directories.
5. Performance Requirements
4.2 The dehumidifier shall consist of a motor-compressor,
5.1 The unit shall be capable of condensing at least 1.8 gal
condensing unit, dehumidifying coil, air-circulating fan, and
(7 L) of water in 24 h at an ambient temperature of 90 °F
accessories, all enclosed within a metal cabinet. The dehumidi-
(32 °C) dry bulb and 60 % relative humidity.
fier shall be complete, self-contained with the refrigeration
5.2 The unit shall operate satisfactorily in a maximum
equipment dehydrated, and charged with the necessary operat-
ambient temperature of 110 °F (43 °C) and a minimum relative
ing quantity of refrigerant and oil. Each unit shall be ready for
humidity of 30 %. Under these conditions of maximal load, the
operation after removal of shipping protection, opening of
temperature rise of the hermetic motor shall not exceed 158 °F
valves where provided, and connection to electric power.
(70 °C).
4.3 The motor-compressor shall be of the hermetic type and
5.3 The equipment shall operate satisfactorily when inclined
shall consist of a compressor and motor enclosed in a gastight
at an angle of 15° on each side of the vertical, in each of two
shell. The hermetic compressor unit shall conform to UL 984
vertical planes at right angles to each other.
and shall be at least ⁄6 hp. Equipment shall operate on 115-V,
single-phase, 60-cycle alternating current. The unit shall be
6. Other Requirements
protected against overload by a thermal protector built into the
motor. The thermal protection shall be either the manual or
6.1 Design Documentation—A master drawing of a built
automatic reset type.
configuration shall be provided for each of the following:
6.1.1 Complete dehumidifier,
4.4 Piping necessary for the satisfactory operation of the
6.1.2 Motor compressor,
equipment shall be provided by the manufacturer. Tubing shall
6.1.3 Condenser, and
be made of copper in accordance with Specification B280.
Piping connections shall be arranged in such a manner so as not
6.1.4 Fan and cooling coil.
to impair the vibration-isolation properties of absorption-type
6.1.5 Each master drawing shall show outline, mounting,
mounts, where such mounts are provided. Piping shall be
attachment, and connection dimensions, including methods
securely supported to minimize strain and vibration. Piping
and sizes of fastenings and clearances for installation and
connections shall not be made of soft solder.
servicing, plus supplementary data as necessary to permit
installation without suppliers assistance. The drawing shall
4.5 Materials used in the manufacture of the equipment
illustrate design, construction, operation (or function), and
shall be corrosion-resistant or treated to resist corrosion. The
identity of parts. Where acceptance tests are required, the tests
method of manufacture shall not impair physical, structural, or
shall be identified, and approval authority and date shall be
corrosion-resistant properties of the components. Materials,
noted on the drawing. Subassembly drawings shall be provided
coatings, and paint systems shall satisfactorily pass the appli-
to supplement master drawings where desirable.
cable salt spray and humidity test specified in this specification.
6.2 Schematic Drawings:
4.6 Bolts, nuts, studs, pins, screws, and such other fasten-
6.2.1 Schematic drawings shall be provided that include all
ings or fittings shall be of a corrosion-resisting material, or of
mechanical, piping and electrical circuits, and connections.
a material treated in a manner to render it adequately resistant
6.2.2 All symbols used for equipment components or parts
to corrosion. Screws exposed in final assembly shall be
shall be given a piece number and identified in the list of
corrosion-resisting material.
materials with the following information:
4.7 Similar parts, including repair parts, or corresponding
6.2.2.1 Piece number,
apparatus furnished on the same contract or order, or built to
6.2.2.2 Quantity required,
the same drawings, shall be strictly interchangeable without the
6.2.2.3 Descriptive name,
necessity of further machining or hand fitting of any kind.
6.2.2.4 Manufacturer,
4.8 A plastic or other chemically inert container shall be
6.2.2.5 Manufacturer’s model or identifying number,
provided for collecting the condensate. The container shall be
6.2.2.6 Manufacturer’s drawing number, and
of a size and configuration that will fit within the cabinet
6.2.2.7 Weight.
enclosure. The container shall be provided with baffles to
prevent the overflow or spilling of water and shall be readily 6.3 Manuals—Manuals shall be typed in accordance with
removable from the dehumidifier cabinet. A male fitting shall the manufacturer’s commercial practice. Photo views of the
be provided from the container for connection of a 0.375-in. equipment shall be included as part of the general description.
(10 mm) inside diameter flexible rubber tubing for draining the A section shall be provided containing reduced copies of all
condensate (wall thickness 0.125 in. (3 mm)). The rubber drawings required to amplify or illustrate the text including
tubing will not be required to be furnished by the contractor. diagram
...