ASME A112.14.4 pdf free download

ASME A112.14.4 pdf free download GREASE REMOVAL DEVICES
1.4 Definition automatic grease/oil removal device (GRD): a plumb- ing appliance that is installed in the sanitary drainage system in order to intercept free-floating fats, oils, and grease from waste water discharges. Such equipment operates on a time- or event-controlled basis and has the ability to remove the entire range of commonly available free-floating fats, oils, and grease automatically without intervention from the user except for mainte- nance. The removed material is essentially water-free, which allows for recycling of the removed product.
2 GENERAL REQUIREMENTS
2.1 Construction
2.1.1 Design Considerations. The GRD shall automatically remove fats, oils, and grease from the separation chamber to a point outside of the GRD. The removal process shall be such that the removed fats, oils, and grease shall be 95% by volume free of water when tested according to this Standard.
2.1.2 Size. The flow and grease retention of each GRD shall be tested and rated in accordance with ASME A112.14.3.
2.1.3 Inlet and Outlet Connections. The inlet and outlet connections of the GRD shall be either female pipe thread or a plain end diameter to allow hubless coupling connections. Tapered threads shall comply with ASME B1.20.1. Hubless connections shall comply with the outside dimension for the given pipe size in accordance with ASTM A888.
2.2 Installation Instructions
Each GRD shall be provided with complete installa-tion instructions，including but not limited to the fol-lowing:
a) Flow control and/or vent requirementsb) Separate trapping requirements
(c) Elevation and accessibility requirementsid) Safety and health-related instructions
(e) Wiring instructions to reference national orlocal codes
fCleanout locations
(g)Instructions that show the clearances requiredfor maintenance，cleaning, and prevention of hazards2.3 Maintenance and Operating InstructionsEach GRD shall be provided with service instructions,which include a trouble shooting guide as well asinstructions for performing necessary servicing or ob-taining outside servicing.Units shall be provided withcomplete maintenance and operating instructions.2.4 Electrical Requirements
All electrical components used in the GRD shallconform to the appropriate standards listed in para. 1.3.
3 TESTING
3.1 General
The following test protocol has been established inorder to demonstrate that the GRD is capable of remov-ing accumulated grease in the amount equal to 100%of its rated capacity within 24 hr and to establish thatthe removed grease contains no more than 5% waterby volume.
3.2 Description of Test Setup3.2.1 Test Stand
ia)The GRD to be tested shall be installed on thetest stand as described in ASME A112.14.3 and inFig. 1. The grease discharge shall be connected to orshall feed a container of sufficient size to hold 150%of the rated capacity of fats，oils，and grease from theGRD.This container shall be positioned in a locationrecommended by the manufacturer of the GRD in theinstallation instructions for the product.
(b) The GRD shall be connected to an appropriateelectrical supply as described in the installation instruc-tions and asrequired on the electrical data plate on the GRD, if applicable. The electrical circuit shall be fused or otherwise protected and shall be appropriately grounded. If required by the manufacturer, ground fault protection shall be provided. (c) All warning devices (which indicate grease levels) shall be installed on the GRD or remotely located as described in the manufacturer’s installation instructions.
3.2.2 Grease Delivery System (Grease Meter- ing Sink). A floor sink of sufficient volume to contain 10% of the rated grease capacity of the GRD being tested shall be connected through a ball valve to the horizontal line between the base of the vertical waste riser [ASME A112.14.3, para. 3.2.1.4(d)] and the GRD inlet (See Fig. 1). This floor sink shall be used to meter grease into the GRD. 3.2.3 Test Materials. Lard, as required in ASME A112.14.3, shall be used to conduct this test.
3.3 GRD Conditioning Prior to starting the test increments, the GRD shall be cleaned of all grease from previous tests and filled with fresh water to the static water level. The water shall be at a temperature of 70±10°F (21±6°C). All electronic and mechanical components shall be set as described in the manufacturer’s instructions for normal operation.