DESC:FIELD
The present disclosure relates to the field of control panels for server racks.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
A rack cooling system refers to a cooling system that is used in either small data centers or in high-density areas of large data centers. Typically, the rack cooling system's configuration is based on the split AC principle. The rack cooling system includes a cooling unit snug fit inside a server rack. The cooling unit includes control panels connected to the cooling unit for facilitating precise temperature control and air conditioning of the cooling system. A typical control panel includes a high-voltage (HV) control panel and a low-voltage (LV) control panel. The HV control panel is located below the cooling coil of the cooling unit and the LV control panel is fastened on the back side of the cooling unit.
The removal of the LV control panel becomes laborious during maintenance as the fasteners are difficult to be accessed. Further, the positioning of the LV control panel restricts the airflow from entering the evaporator coil, thereby decreasing the cooling efficiency of the cooling system. Moreover, the position of the HV control panel makes it vulnerable to short circuits as it is in close proximity to the cooling coils of the cooling unit.
A conventional server rack provides restricted access to the control panels, especially during maintenance of the control panels. As a result, in the event of the failure of any one of the control panels, it becomes necessary to extract the entire cooling unit from the server rack. Therefore, the complex packaging of the control panels urges the need for a highly skilled operator for replacing the control panels to avoid major electrical problems.
There is, therefore felt a need for a control panel for a rack cooling system that alleviates the aforementioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a control panel assembly for a rack cooling system.
Another object of the present disclosure is to provide a control panel assembly for a rack cooling system that facilitates ease of maintenance.
Yet another object of the present disclosure is to provide a control panel assembly for a rack cooling system that is compact.
Still yet another object of the present disclosure is to provide a control panel assembly for a rack cooling system that increases the efficiency of the cooling system.
Another object of the present disclosure is to provide a control panel assembly for a rack cooling system that can be safely removed.
Yet another object of the present disclosure is to provide a control panel assembly for a rack cooling system that has negligible replacement downtime.
Still yet another object of the present disclosure is to provide a control panel assembly for a rack cooling system that eliminates the need for highly skilled operators for replacing the control panel.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a control panel assembly for a rack cooling system, wherein the rack cooling system includes a rack, a cooling unit and a fan array mounted on the rack. The control panel assembly comprises a housing defined by a front panel, side panels, a rear panel, a top panel, and a bottom panel. An HV control unit and an LV control unit configured to be provided in the housing. A guiding means configured to extend from on the bottom panel. A sliding means configured on an operative top surface of a cooling unit. The sliding means configured to slidably receive the guiding means to facilitate mounting of the housing on the operative top surface of the cooling unit.
In an embodiment, the assembly includes a first bracket attached to an operative top end of the front panel. The first bracket has a pair of first holes configured thereon.
In another embodiment, the assembly includes a front cover plate having an operative length equal to the length of the front panel and the cooling unit. The front cover plate has a pair of second holes configured thereon complementary to the first holes to facilitate attachment of the front cover plate with the front panel and the cooling unit.
In an embodiment, the first holes and the second holes are configured to receive fasteners therein to attach the front cover plate to the cooling unit.
In yet another embodiment, the assembly includes a rear panel configured to be attached to an operative back side of the housing. The rear panel has a pair of third holes configured thereon.
In still yet another embodiment, a second bracket is configured on an operative end of the top surface of the cooling unit. The bracket has at least two fourth holes complementary to the third holes to facilitate snug fitting of the rear panel on the cooling unit.
In an embodiment, the third holes and the fourth holes are configured to receive fasteners therein to attach the rear panel to the cooling unit.
In an embodiment, the housing include a handle configured on the side panel. The handle is configured to facilitate the pulling of the housing from the cooling unit to enable removal of the assembly from the cooling unit.
In another embodiment, the handle is a concealed configuration.
In yet another embodiment, the assembly includes a plurality of connectors configured to be provided on the housing in electric connection with the HV control unit and the LV control unit.
In still yet another embodiment, the connectors are selected from the group consisting of a fan driver printed circuit board PCB, a main controller, a power rectifier, and a power isolator MCB.
In another embodiment, the assembly includes a plurality of internal connectors configured on the front panel of the housing below the first bracket. The internal connectors are configured to be electrically connected to the fan array and are configured to provide power to the fan array
In yet another embodiment, the assembly includes a plurality of external connectors configured on the top panel of the housing.
In still yet another embodiment, the fan array includes twelve fans.
In an embodiment, the fan array is arranged in four subgroups of three fans each.
In another embodiment, each of internal connectors is configured to connected to each subgroup of the fan array.
In yet another embodiment, the plurality of external connectors is configured to be electrically connected to external systems to facilitate communication of the assembly with external systems.
In still yet another embodiment, the external systems include a power connecting system, a condenser controlling system, and a customer system.
In an embodiment, the plurality of external connectors includes a four-pin connector configured to be connected to a power connector, a nine-pin connector configured to be connected to a condenser control connector, and a thirteen-pin connector configured to be connected toa customer system connector.
In another embodiment, each external connector has a different configuration of pins that allows connection of a connector with of a particular configuration with a pin of a complementary configuration.
In yet another embodiment, the assembly includes a power isolator MCB attached to an operative back side of the housing is configured to shut down the cooling unit.
In still yet another embodiment, the assembly includes a quick-release mechanism configured to detachably secure the front cover plate to the first bracket.
In another embodiment, the thickness of the cooling unit is to mm.
In yet another embodiment, the bracket has a U-shaped configuration.
In still yet another embodiment, the second bracket has a L-shaped bracket configuration.
In an embodiment, a process for detaching a control panel assembly from a rack cooling system, comprising:
• opening a front door of the rack to access the the front cover plate;
• unscrewing the front cover plate from the first bracket of the housing;
• electrically isolating the housing by disconnecting the fan array from the plurality of internal connectors and the external systems from the plurality of external connectors on the backside;
• detaching the housing from the cooling unit by unscrewing the rear panel from the bracket ; and
• slidably pulling out the housing from the cooling unit from the backside of the cooling rack, with the help of the handle.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
A control panel assembly for a rack cooling system of the present disclosure will now be described with the help of the accompanying drawing in which:
FIGURE 1A illustrates an isometric view of conventional control panels provided on a cooling unit that is fitted into a server rack of the conventional rack cooling system;
FIGURE 1B illustrates an isometric view of the conventional control panels fitted to the cooling unit of Figure 1;
FIGURE 1C illustrates an isometric view showing the internal structure of the conventional cooling unit of Figure 1;
FIGURE 1D illustrates a side view of the internal structure of the conventional control panel of Figure 1;
FIGURE 2 illustrates an isometric view of a control panel assembly fitted to a cooling unit in accordance with the present disclosure;
FIGURE 3 illustrates an isometric view of a fan array fitted to the cooling unit of Figure 2;
FIGURES 4A-4B illustrates isometric views of the control panel assembly in accordance with the present disclosure;
FIGURE 4C illustrates a guiding means of the control panel of Figure 2;
FIGURE 4D illustrates a slide rail of the cooling unit of Figures 4A-4B; and
FIGURE 5 illustrates a sliding mechanism of the control panel over the cooling unit of Figure 2.
FIGURE 6A illustrates a side view of the internal components of the control panel of Figures 4A-AB;
FIGURES 6B-6C illustrates a view of an internal connector and an external connector of the control panel of Figures 4A-AB;
LIST OF REFERENCE NUMERALS
100 – Rack cooling system (prior art)
105 – Server rack
106 – Rack front door
110 – Cooling unit (prior art)
115 – High voltage (HV) control unit (prior art)
115A – Display
115B – Power Isolator (MCB)
115C – Power rectifier
120 – Low voltage (LV) control unit (prior art)
120A – External power connector
120B – Main Controller
120C – Fan driver PCB
120D – External control connector
122 – Plurality of fasteners
125 – Cooling coils
130 – Fan array (prior art)
210 – Cooling unit of the present disclosure
212 – Fan array
215 – Housing
215A – Fan driver PCB
215B – Main Controller
215C – Power Rectifier
215D – Power Isolator (MCB)
216 – Front panel
217 – Side panels
218 – Rear panel
219 – Top panel
220 – Bottom panel
221 – Front cover plate
222 – First bracket
224 – Two second holes
226 – Two first holes
225 – Backside plate
227 – Two third holes
230 – Guiding means
235 – Slide rail
240 – Second bracket
242 – Two fourth holes
250 – External connector
250A – Power connector
250B – Condenser control connector
250C – Customer system connector
255 – Internal connector
260 – Handle
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open-ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
Figure 1A illustrates a conventional rack cooling system 100 including a cooling unit 110 and a server rack 105. The cooling unit 110 is snugly fitted inside the server rack 105. The control panels are mounted on the cooling unit 110 for precise temperature control and air conditioning.
Conventionally, the control panel of the cooling unit includes a high-voltage (HV) control panel 115 and a low-voltage (LV) control panel 120. The HV control panel 115 is mounted below a cooling coil 125 of the cooling unit 110. Further, the HV control panel includes a display 115A, a power isolator (MCB) 115B, and a power rectifier 115C. The LV control panel 120 is mounted on the back side of the cooling unit 110. Moreover, the LV control panel 120 includes an external power connector 120A, a main controller 120B, a fan driver PCB 120C, and an external control connector 120D.
Figure 1D illustrates the side view of the control panels 115, 120 with the cooling unit 110 and along with the internal components of the HV control panel 115 and the LV control panel 120. The external power connector 120A are provided on the LV control panel 120. Power is routed from the LV control panel 120 to the HV control panel 115. Further, power required for the cooling unit 110 is fed into the HV control panel 115 through the power isolator (MCB) 115B and then routed to the LV control panel 120. Power for a fan array 130 is driven out of the LV control panel 120 and routed to the front of the cooling unit 110.
The placement of the HV control panel 115 is in close proximity to the cooling coil 125 makes it vulnerable to short circuits. Also, the placement of the LV control panel 120 restricts the return airflow from entering the evaporator coil as shown in Figures 1A and 1B. Moreover, the LV control panel 120 is fastened to the frame of the cooling unit 110 with a plurality of fasteners 122 in a way that makes the removal of the LV control panel 120 laborious and difficult to be accessed in a narrow and restricted space of the rack.
In an event of failure of any one of the control panel 115, 120 components, the entire cooling unit needs to be extracted from the rack 105 because of limited access to the control panels 155, 120.
Therefore, felt a need for a control panel for a rack cooling system that alleviates the aforementioned drawbacks.
A preferred embodiment of a control panel assembly 200 for a rack cooling system 100 of the present disclosure will now be described with reference to Figure 2 through Figure 6C. The preferred embodiment does not limit the scope and ambit of the present disclosure.
Figure 2 illustrates an isometric view of the housing 215 fitted on a cooling unit 210 in accordance with the present disclosure.
Figure 3 illustrates an isometric view of a fan array 212 fitted to the cooling unit 210. The cooling unit 210 includes the fan array 212 mounted on the operative front side of the cooling unit 210 as shown in Figure 3.
The control panel assembly 200 for the rack cooling system 100, wherein the rack cooling system includes a cooling unit 210 and a fan array 212. The control panel assembly 200 comprises a housing 215 defined by a front panel 216, side panels 217, a rear panel 218, a top panel 219, and a bottom panel 220 as shown in Figure 4A. An HV control unit and an LV control unit are configured to be provided in the housing 215. A guiding means 235 is configured to extend from the bottom panel 220 of the housing 215. Further, a sliding means 230 is configured on an operative top surface of the cooling unit 210. The sliding means 230 is configured to slidably receive the guiding means 235 to facilitate mounting of the housing 215 on the operative top surface of the cooling unit 210 as shown in Figure 5.
The assembly 200 includes a first bracket 222 attached to an operative top end of the front panel 216. The first bracket 222 has a pair of first holes 226 configured thereon. The assembly 200 further includes a front cover plate 221 having an operative length equal to the length of the front panel 216 and the cooling unit 210. The front cover plate 221 has a pair of second holes 224 configured thereon complementary to the first holes 226 to facilitate attachment of the front cover plate 221 with the front panel 216 and the cooling unit 210 as shown in Figures 3 and 4A.
The the first holes 226 and the second holes 224 are configured to receive fasteners therein to facilitate the snug fitting of the front cover plate 221 and the cooling unit 210.
The assembly 200 includes a quick-release mechanism configured to detachably secure the front cover plate 221 to the first bracket 222.
Further, the assembly 200 includes a rear panel 225 that is configured to be attached to an operative back side of the housing 215. The rear panel 218 has a pair of third holes 227 configured thereon. A second bracket 240 is configured on an operative end of the top surface of the cooling unit 210. The bracket 240 has at least two fourth holes 242 complementary to the third holes 227 to facilitate snug fitting of the rear panel 225 on the cooling unit 210.
The third holes 227 and the fourth holes 242 are configured to receive fasteners therein to facilitate snug fitting of the rear panel 225 on the cooling unit 210.
The housing 215 includes a handle 260 configured on the side panel 217, the handle configured to facilitate the pulling of the housing 215 from the cooling unit 210 to enable removal of the assembly from the cooling unit 210. The handle 260 is a concealed handle as shown in Figure 4B.
The assembly includes a plurality of connectors configured to be provided on the housing in an electric connection with the HV control unit and the LV control unit. Connectors are selected from the group consisting of a fan driver printed circuit board PCB 215A, a main controller 215B, a power rectifier 215C, and a power isolator MCB 215D as shown in Figure 6A.
Furthermore, the assembly 200 includes a plurality of internal connectors 255 as shown in Figure 6B is configured on the front panel 216 of the housing 215, more specifically below the first bracket 222 as shown in Figure 4A. The internal connectors 255 are configured to be electrically connected to the fan array 212 and are configured to provide power to the fan array 212. The fan array 212 includes at least twelve fans arranged in four subgroups of three fans each.
The electrical configuration of the plurality of internal connectors 255 is configured to be complementary to each subgroup of the fan array 212 to eliminate any connection error if the connectors are mismatched.
The plurality of external connectors 250 are configured to be electrically connected to external systems to facilitate communication of the assembly 200 with external systems. The external systems include a power connecting system, a condenser controlling system, and a customer system. The plurality of external connectors 250 includes a four-pin connector configured to be connected to a power connector 250A, a nine-pin connector configured to be connected to a condenser control connector 250B, and a thirteen-pin connector configured to be connected to a customer system connector 250C as shown in Figure 6C.
The external connector 250 has a different configuration of pins to allow the connection of the respective connector to eliminate any mismatch of the connector pins. This configuration of the internal connectors 255 and the external connectors 250 allows any person even if unskilled to install the control panel.
The assembly 200 includes a power isolator MCB 215D attached to an operative back side of the housing 215 is configured to shut down the cooling unit 210.
In an embodiment, the thickness of the cooling unit 210 is 80 to 100mm.
The bracket 222 has a U-shaped configuration and the second bracket 240 has a L-shaped bracket configuration.
The configuration of the housing 215 allows its replacement by another housing to reduce maintenance downtime thereof. In an exemplary embodiment, it has been observed that the downtime for the replacement and installation of the conventional control panels 115, 120 can take up to four hours, whereas downtime for the replacement and installation of the housing 215 of the present disclosure only takes up to thirty minutes.
In the case of failure of the control panels 115, 120, the compact size and light weight of the housing 215 make it easy to be mobilized.
The process for detaching the housing 215 from the cooling unit 210 includes the following steps:
• opening a front door (106) of the rack (105) to access the the front cover plate (221);
• unscrewing the front cover plate (221) from the first bracket (222) of the housing (215);
• electrically isolating the housing (215) by disconnecting the fan array (212) from the plurality of internal connectors (255) and the external systems from the plurality of external connectors (250) on the backside;
• detaching the housing (215) from the cooling unit (210) by unscrewing the rear panel (225) from the bracket (240); and
• slidably pulling out the housing (215) from the cooling unit (210) from the backside of the cooling rack (105), with the help of the handle (260).
The foregoing description of the embodiments has been provided for purposes of illustration and is not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCEMENTS
The present disclosure described hereinabove has several technical advantages including, but not limited to, a control panel assembly for a rack cooling system, that:
• has compact packaging due to integrated HV control panel and LV control panel;
• has easy access to the control panel due to the sliding mechanism;
• provides ease of maintenance and replacement due to easy access to the control panel;
• increases cooling efficiency as the control panel is not in the path of airflow which allows unrestricted airflow;
• can be safely removed;
• has negligible replacement downtime; and
• eliminates the need for highly skilled operators for replacing the control panel.
The foregoing disclosure has been described with reference to the accompanying embodiments which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description.
Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Any discussion of devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation. ,CLAIMS:WE CLAIM:
1. A control panel assembly (200) for a rack cooling system (100), wherein the rack cooling system (100) includes a rack (105), a cooling unit (210) and a fan array (212) mounted on the rack (105), said control panel assembly (200) comprising:
• a housing (215) defined by a front panel (216), side panels (217), a rear panel (218), a top panel (219), a bottom panel (220);
• an HV control unit and an LV control unit configured to be provided in said housing (215);
• a guiding means (235) configured to extend from said bottom panel (220); and
• a sliding means (230) configured on an operative top surface of the cooling unit (210), said sliding means (230) configured to slidably receive said guiding means (235) to facilitate mounting of said housing (215) on said operative top surface of the cooling unit (210).
2. The assembly (200) as claimed in claim 1, which includes a first bracket (222) attached to an operative top end of said front panel (216), said first bracket (222) having a pair of first holes (226) configured thereon.
3. The assembly (200) as claimed in claim 2, which includes a front cover plate (221) having an operative length equal to the length of said front panel (216) and the cooling unit (210), said front cover plate (221) having a pair of second holes (224) configured thereon complementary to said first holes (226) to facilitate attachment of said front cover plate (221) with said front panel (216) and the cooling unit (210).
4. The assembly (200) as claimed in claim 3, wherein said first holes (226) and said second holes (224) are configured to receive fasteners therein to attach said front cover plate (221) to said cooling unit (210).
5. The assembly (200) as claimed in claim 1, which includes a rear panel (225) configured to be attached to an operative back side of said housing (215), said rear panel (218) having a pair of third holes (227) configured thereon.
6. The assembly (200) as claimed in claim 5, wherein a second bracket (240) is configured on an operative end of the top surface of said cooling unit (210), said bracket (240) having at least two fourth holes (242) complementary to said third holes (227) to facilitate snug fitting of said rear panel (225) on said cooling unit (210).
7. The assembly (200) as claimed in claim 6, wherein said third holes (227) and said fourth holes (242) are configured to receive fasteners therein to attach said rear panel (225) to said cooling unit (210).
8. The assembly (200) as claimed in claim 1, wherein said housing (215) include a handle (260) configured on said side panel (217), said handle configured to facilitate said pulling of said housing (215) from said cooling unit (210) to enable removal of said assembly from said cooling unit (210).
9. The assembly (200) as claimed in claim 8, wherein said handle (260) is a concealed configuration.
10. The assembly (200) as claimed in claim 1, which includes a plurality of connectors configured to be provided on said housing in electric connection with said HV control unit and said LV control unit.
11. The assembly (200) as claimed in claim 10, wherein said connectors are selected from the group consisting of a fan driver printed circuit board (PCB) (215A), a main controller (215B), a power rectifier (215C), and a power isolator (MCB) (215D).
12. The assembly (200) as claimed in claim 1, which includes a plurality of internal connectors (255) configured on said front panel (216) of said housing (215) below said first bracket (222), said internal connectors (255) being configured to be electrically connected to said fan array (212) and further configured to provide power to said fan array (212)
13. The assembly (200) as claimed in claim 1, which includes a plurality of external connectors (250) configured on said top panel (219) of said housing (215).
14. The assembly (200) as claimed in claim 13, wherein said plurality of external connectors (250) is configured to be electrically connected to external systems to facilitate communication of said assembly (200) with external systems.
15. The assembly (200) as claimed in claim 13, wherein said external connectors include a power connecting system, a condenser controlling system, and a customer system.
16. The assembly (200) as claimed in claim 15, wherein said plurality of external connectors (250) includes a four-pin connector configured to be connected to a power connector (250A), a nine-pin connector configured to be connected to a condenser control connector (250B), and a thirteen-pin connector configured to be connected to a customer system connector (250C).
17. The assembly (200) as claimed in claim 15, wherein each external connector (250) has a different configuration of pins that allows connection of a connector with a particular configuration with a pin of a complementary configuration.
18. The assembly (200) as claimed in claim 1, which includes a power isolator (MCB) (215D) attached to an operative back side of the housing (215) is configured to shut down the cooling unit (210).
19. The assembly (200) as claimed in claim 1, which includes a quick-release mechanism configured to detachably secure said front cover plate (221) to said first bracket (222).
20. The assembly (200) as claimed in claim 1, wherein the thickness of said cooling unit (210) is 80 to 100mm.
21. The assembly (200) as claimed in claim 2, wherein said bracket (222) has a U-shaped configuration.
22. The assembly (200) as claimed in claim 6, wherein said second bracket (240) has a L-shaped bracket configuration.
23. A process for detaching a control panel assembly (200) as claimed in claim 1, from a rack cooling system (100), the rack cooling system (100) having a rack (105), a cooling unit (210) and a fan array (212) mounted on the rack, said process comprising:
• opening a front door (106) of the rack (105) to access said front cover plate (221);
• unscrewing said front cover plate (221) from said first bracket (222) of said housing (215);
• electrically isolating said housing (215) by disconnecting the fan array (212) from said plurality of internal connectors (255) and the external systems from said plurality of external connectors (250) on said backside;
• detaching said housing (215) from the cooling unit (210) by unscrewing said rear panel (225) from said bracket (240); and
• slidably pulling out said housing (215) from said cooling unit (210) from the backside of the cooling rack (105), with the help of said handle (260).
Dated this 27th day of December, 2023

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant