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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

a. Door panels to be insulated with foam-in-place polyurethane insulation.<br />

b. Top, sides and bottom of door leaf shall be provided with electric<br />

resistance heater to prevent condensation and frosting. Heater unit shall<br />

be assembled using UL approved components and shall be assembled at<br />

the factory so that only connection to 120 volt circuit is required during<br />

installation.<br />

c. Door leaf to be equipped with electrical safety edge effective full width<br />

and full travel of door. Door shall be instantly reversing upon actuation of<br />

safety edge to fully open position. Provisions shall be made such that<br />

when the door is in the fully open position due to activation of the safety<br />

edge only, the door will not close by time-delay, but will stay in fully open<br />

position and close by pull cord operation only.<br />

d. Doors shall be provided with adjustable, oil resistant perimeter gasket at<br />

sides and head of frame, and along sensitive edge. Door leaves shall<br />

have sweep type sill gasket. Gasket shall be suitable for temperatures<br />

and service involved.<br />

e. Door operation shall utilize a two-speed electric operator. Electric motor<br />

shall be 1/2 HP minimum, 240/480 volt, 3 phase, drip-proof, and totally<br />

enclosed. Automatic controls shall be complete with step-down<br />

transformers so that only 480 volt circuit is required for the door operator.<br />

All power controls and limit switch shall be installed in water and dust-tight<br />

NEMA 4 enclosures. All connections shall be water-proof. Door leaves<br />

shall open at approximately 22 inches per second and close at<br />

approximately 16 inches per second.<br />

f. Doors shall be supplied with pull-cord switches and plastic pull cords.<br />

Door shall be also furnished with adjustable time-delay closing device with<br />

floor trip-wire safety device. Floor trip wire and signal generator to be<br />

furnished by Others.<br />

g. Doors shall be provided with a pushbutton operated partial opening for<br />

pedestrian use. A separate adjustable time-delay closing device shall be<br />

provided for this operation.<br />

h. It is the intent of this specification that the door operation to perform the<br />

following functions:<br />

1) Pull cord opens door.<br />

2) Time delay closes door.<br />

WALK-IN COOLERS AND FREEZER 13100-6

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