Gasboy Atlas Fuel Systems Installation Manual User Manual download pdf (Page 47)

MDE-4331M Atlas® Fuel Systems Installation Manual · September 2014 Page 6-17

Testing New Field Wiring Installation

To prepare for field wiring, proceed as follows:

1 Open the lower panel door (on the side with the J-box, side 1 inlet will be to the left).

2 Remove the box cover and retain for reassembly.

Note: For Atlas units replacing older units, if the existing wir

e is too short to reach the

installed J-box, a splice must be made. The contractor must provide and use a class 1,

division 1, explosion-proof J-box in which connections are to be made as per the code.

Refer to “Before Placing Unit on Fuel Island” on page 6-6.

3 For all units, ensure that a seal-off “Y” fitting has been installed and sealed as a first

connection, where the conduit leaves the ground. This fitting must be in place and sealed

before proceeding further. For more information, refer to MDE-4333 Atlas Fuel Systems Site

Preparation Manual. Install an adaptive 1-inch metal conduit and union to the J-box conduit.

Testing New Field Wiring

WARNING

Sparks can ignite fuel/vapors. Fire/explosion can result in severe injury or death.

Exercise care when testing wires. Do not test when exposed fuel and vapors are present.

Only use a Megger

tester on new field wiring. For existing wiring, use a digital

multimeter to test for continuity/resistance.

Test the insulation of new wiring from the station and to the electronics cabinet before

connecting wires. Refer to the warning above. This checks for damage that can occur when

pulling wires through the conduit.

To test the new field wiring, proceed as follows:

1 Disconnect wires at both ends. If you do not disconnect wires at both ends, you may damage

the pump/dispenser electronics.

2 Test the conduit wiring ends by using an insulation/Megger tester or digital multimeter as

described in the warning above.

3 Connect one tester lead to the wire under test.

4 Connect the other tester lead to the ground.

5 Measure the resistance. Follow the test equipment manufacturer’s instructions. Insulation

resistance greater than 50 Megaohms is satisfactory. Check the local authority requirements.

6 Repeat steps 1 to 5 for all wires.

7 Repeat the test between all wires.

8 When all wiring tests are successful, pot the conduit.

Note: Ensure that enough wire is re

tained to connect to the wiring within the J-box of the unit

being installed.

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Gasboy Atlas Fuel Systems Installation Manual User Manual Page 47