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i 6114 Field Tests of Installations. Perform the following tests in the presence of the Engineer and, when applicable , a representative of the agency designated to accept maintenance responsibility. Continuity: Test each signal head circuit, pedestrian detector circuit, vehicle detector loop circuit, and interconnect signal circuit for continuity. Functional : Perform a functional test that demonstrates that each and every part of the installation functions as specified. Induced Voltage on traffic signal connections : Measure the voltage between each signal head indication field terminal and the AC neutral circuit in the controller cabinet during the off (dark) state of each signal head indication . Ensure that the voltage does not exceed 2 VAC, RMS . If this value is exceeded, take the following action to reduce the value to 2 VAC, RMsO ( 1 ) Check for loose or broken connections in the signal head circuit from the controller cabinet to the signal heads . (2) If ( 1 ) above does not correct the problem, connect additional neutral circuits between the signal head and the controller cabinet . Inductive Loop Assembly : An inductive loop assembly is defined as a loop plus the lead- in cable . Measure and record the series resistance of each inductive loop assembly. Ensure that the resistance does not exceed 10 Q . Perform an insulation resistance megger test, at 500 VDc , for each inductive loop assembly at the cabinet in which the inductive loop assembly is terminated . Do not connect the inductive loop assembly to the cabinet terminal strips during the test, except for the drain wire of a shielded lead-in cable . Insulation resistance is defined as the resistance between one wire of the lead-in cable and a ground rod or bussbar. Record the insulation resistance of each inductive loop assembly. Ensure that the resistance is equal to or greater than 100 Mno Perform the 48 hour test only after achieving acceptable results from the other tests listed in 611 -4 . Forty-Eight Hour Test for Traffic Signal installations : (a) Before beginning the 48 hour test, place all new signal installations (no existing signals) in flash for 48 to 336 hours . The length of the flash period will be determined by the Engineer. (b) Continuously operate each new or modified traffic signal installation or system for not less than 48 hours . If unsatisfactory performance of the system develops , correct the condition, and repeat the test until obtaining 48 hours of satisfactory continuous operation . (c) During the 48 hour test period, the Contractor is fully responsible for the signal or signal systems . Provide a responsible representative (technically qualified) who can monitor signal operation and troubleshoot any malfunctions within a one hour period. When coordination is specified in the Contract Documents , provide a two hour training session on the operation and programming of the coordination features of the controller units during the 48 hour test . Arrange the time and place of the training session with the Engineer . (d) Perform a 48 hour test for flashing beacon installations in the same manner as for traffic signal installations . (e) Start the 48 hour test on a Monday, Tuesday, or Wednesday. However, do not start the 48 hour test on the day preceding a holiday. (f) Start the 48 hour test between 9 : 00 AM and 2 : 00 PM . (g) Before the 48 hour test, install and have standing by all equipment specified in the Contract Documents . - 177 - ' FPID ( S ) : 423186 - 1 - 58 - 01