GILBERT ELECTRICAL SYSTEMS TRANSCLOSURE OPERATING AND
MAINTENANCE GUIDE
Receiving and Inspection Instructions
The units are wrapped for shipment in corrugated cardboard to protect from incidental
damage, and then sealed with plastic to protect from moisture, rain, etc. This wrapping is
only to protect the unit during shipment, and should be removed once the unit is onsite.
Once unwrapped, a thorough inspection of the outside of the unit should be made for
obvious physical damage. Any structural damage should be reported promptly to Gilbert
Electrical Systems. If the unit is to be stored for a long period un-energized, moisture
could accumulate inside, so it is advisable to dry out the unit inside with space heaters
before putting it into service.
Once unpacked, the unit should be inspected internally for damage. Particular attention
should be paid to the top and bottom frames of the unit. These should be inspected for rust
bending and loose bolts. Any blocking or bracing installed for shipping should be removed.
All mechanical connections holding equipment in place should be tightened.
Check all electrical connections, if any, for tightness. Be very careful with the connections to
porcelain components. The porcelain can crack if too much strain is put against it or too
much torque is applied. Please refer to the manufacturer recommends of the component for
the correct torque be applied.
Check all doors for proper alignment. If doors will not shut concrete pad may not be level
and shims may have to be used to level the enclosure.
Lifting Instructions
Four lifting nuts are welded into the corner post of the enclosure and to the middle dividers
of multiple bay units. The unit may be lifted using a 4 point lifting sling, preferably using
nylon slings to avoid damaging the paint finish. If a chain or metal cable is used, take care
to place protection between the covers and the cable. The use of a spreader bar is
recommended to avoid paint damage or damage to the covers.
The unit can also be lifted from the bottom using a fork lift if of sufficient size. If unit is
shipped on a pallet be sure to forks are long enough to reach ¾ the width of the unit. If no
pallet was provided then care should be taken to make sure the forks are long enough to
reach entirely to the opposite side of the unit to fully support both sides of the enclosure. A
safety strap should be used to secure the unit to the forklift while being moved. Also, extra
care should be used to prevent damage to any doors, door handles, or control enclosures
mounted on the outside of the enclosure, if moved this way.
Gilbert Electrical Systems recommends that the unit should be set in place with a crane
or other lifting equipment using the provisions detailed above. The enclosure should be
handled carefully when unloading, and should not be shoved from the sides or end if
possible during placement on the pad. This is to prevent causing misalignment of the doors
and locks on the enclosure. Also, the unit should be lowered carefully to the ground and not
dropped as there are many interior components that may be damaged. Shipping braces are
sometimes installed inside and must be removed before putting the unit into service, but
this is no guarantee against damage while unloading or during transit.
The entire unit is wrapped in corrugated cardboard and then sealed in plastic for protection
during shipment. It is best to unload the unit with the shipping protection intact to prevent
damage to the paint finish. The unit should be installed and anchored down on a level
concrete pad or other substantial surface. Anchoring dimensions are on the attached
assembly drawing.
Construction
The enclosure shall be all bolted construction and fabricated of not less than 11 gauge mild
steel with the necessary angle and/or channel base frame. Each section shall be provided
with 4 lugs for shipping and lifting unit. All roofs are to be crowned with rain troughs
between sections for proper water drainage. All formed corners shall welded and ground
smooth. All hardware shall be cadmium plated. All compartments shall have hinged doors.
Compartment doors shall be external panel hinge bolted to door and enclosure and door
shall be removable from the open position. All doors shall have stop latches and "Eberhard"
or equal door locks and handles with 3-point latches. Enclosure is rated Nema 3R
equivalent.
Painting
Unit shall be thoroughly scraped and sanded to remove any burrs or welding spatter. Steel
shall be cleaned and phosphatized under 1800 PSI fluid pressure and treated at 2580 F at a
distance of 6 inches. Phosphoric acid shall be Fremont #658 applied at 3/4 of 1% by volume
of water.
Unit shall be allowed to dry for 30 minutes.
A red oxide modified alkyd primer shall be applied to unit in an even, thorough coat.
Wet primer thickness shall be 3.0 - 4.0 mils. Dry primer thickness shall be 1.2 - 1.6 mils. A
minimum period of one - two hours should be allowed for prime to dry before recoating.
A modified silicone acrylic alkyd enamel shall be applied a minimum of one - two hours after
the primer has been applied to insure proper bonding. After the first coat is applied allow a
minimum of 2 hours before recoating. After additional coat is applied allow a minimum of 2
hours before handling the unit.
Minimum dry total thickness is 3.0 mils; desired dry total thickness is 3.5 mils.
Paint must pass tests specified in ANSI C57.12.28-1988.
Choice of paint colors are Ansi 70, Ansi 61 and Munsell Green. Unit may painted to customer
specifications if given the Ansi color number or paint chip.
Doors
Doors are to be three-point latching and have the ability to be pad locked. Doorstops are to
be furnished to maintain the door remains in the open position when the equipment is being
worked on. Approximate door stop swing in 90 ْ◌. Pentahead bolts are available and used on
REA requirements.
Multiple Units/Shipping Splits
Unless unnecessary to ship, the units will be factory assembled. When shipped, units are
wrapped in cardboard sheeting then plastic wrapped for weather resistance. Units are then
placed on a wooden pallet for easy lifting from the bottom. If lifting from the bottom is not
desired unit may be lifted by the lifting lugs. Lifting lugs are located at the top of the unit.
Lifting attachments are not provided and must be supplied by others. Price deducts are
given for unassembled units. Shipping costs are best way FOB.