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PREFACE

This manual is provided to prevent service personnel from committing 

an act that results in the risk of fire, electric shock, or injury to persons. 

Only trained service personnel should receive, unpack, and assemble 

the NEMA Enclosures. In addition, only trained service personnel should 

install equipment in enclosures.

SAFETY SYMBOLS USED IN THIS MANUAL

This manual provides general safety guidelines to be observed during 

installation, operation, and maintenance of the NEMA Enclosure.

WARNING: Failure to follow directions in the warning could result in 

injury to persons or loss of life.

SAFETY CONSIDERATIONS

WARNING: Improper handling and use of the NEMA Enclosure could 

result in equipment damage, serious injury, or possible death.
Only trained service personnel should be used to remove the enclosure 

from the pallet. Also, be sure you have a sufficient number of service 

personnel. Do not attempt to move enclosures by yourself.

Be sure to read and follow all individual manufacturer equipment 

manuals for safety and installation instructions.

Proper spacing is required when installing electrical equipment to avoid 

electrical shock. Maintain minimum spacing between the accessories 

and components and the computer enclosure assembly for safe 

operation of the equipment when installed in accordance with the 

National Electric Code ANSI/NFPA 70-1999.
The ambient temperature operating range for the NEMA Enclosure and 

accessories is +50 to +95° F (+10 to +35° C).
The non-operating temperature is -4 to +140° F (-20 to +60° C).

SERVICE

The NEMA Enclosures should be repaired by personnel trained by 

Great Lakes, or returned to Great Lakes for repair or replacement. 

Contact Great Lakes Technical Support at 814.734.7303 or at 

greatcabinets.com

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Summary of Contents for GL840N12-2442-SA

Page 1: ...reat Lakes Enclosures GL840N12 2442 SA GL840N12 2442 SB GL840N12 2442 SC GL840N12 2442 SS GL840N12 3042 SA GL840N12 3042 SB GL840N12 3042 SC GL840N12 3042 SS NEMA Enclosures Installation Instructions...

Page 2: ...el should be used to remove the enclosure from the pallet Also be sure you have a sufficient number of service personnel Do not attempt to move enclosures by yourself Be sure to read and follow all in...

Page 3: ...el Do not attempt to move enclosures by yourself WARNING Be careful when moving enclosures before installation Sudden stops and starts excessive force obstructed routes and uneven floor surfaces may c...

Page 4: ...he NEMA 12K enclosure ships with four lifting eye bolts installed Eye bolts must remain installed for enclosure to maintain its NEMA rating A A 1 Diamiter 3 8 16 Thread 1 1 4 Long Lifting Eye Sealing...

Page 5: ...HANDLE As part of the NEMA 12 design the front and rear doors are set up with three point latching doors The door handles have been installed at the manufacturer No additional assembly is required To...

Page 6: ...engaged before securing the 12 x 10 32 screws Make sure bottom hooks are engaged ANCHOR MOUNTING It is recommended that you secure the GL840N12 enclosure to the floor The enclosure has four 75 diamet...

Page 7: ...t the rails loosen the top and bottom bolts with a 3 8 socket set just enough to allow the rail to move Adjust to desired position and re tighten 1 4 20 x 1 2 Carriage Bolts 45 RMU Labels 1 4 20 Hex n...

Page 8: ...osure will be installed at the factory Note the fan will take up 5 75 of enclosure space behind the face of the door Mounting rails will have to be moved back to allow for fan mounting and airflow The...

Page 9: ...d 2 Install the fan and feed the cord through the front door and snap in the fan assembly 3 Install the filter assembly and snap it into the top rear door opening Optional snap in fan assembly for fro...

Page 10: ...1 amps GL12000V A C Unit 120V 12 000 BTU 19 6 amps Side Panel C will accept GL14000V AC Unit 230V 14000 BTU 15 0 16 5 amps GL17000V AC Unit 230V 17000 BTU 15 5 17 1 amps GL20000V AC Unit 230V 20000 BT...

Page 11: ...utton plug flush type 2 x 1 Button plug flush type 3 8 x 8 4 5 x 17 75 Gland plate backup 1 4 20 Elastic stop nut x 12 SIDE PANEL A The A C unit cannot be pre installed at the factory it must be insta...

Page 12: ...tton plug flush type 3 8 x 2 Button plug flush type 1 1 4 4 5 x 17 75 Gland back up plate 1 4 20 Elastic stop nut x 12 At this time please find the specific air conditioner instructions and follow the...

Page 13: ...ng stud located inside at the bottom rear of the enclosure frame using a listed ring or closed loop terminal Connecting Main Protective Grounding Stud to the Protective Bonding Conductors Connect the...

Page 14: ...NOTES 14...

Page 15: ...15 NOTES...

Page 16: ...FORM MS 5 02 26 REV 3 Thank you for your business ETSI Associate Member...

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