Carrier XtendFRESH Operation, Service And Parts Manual

Also see for XtendFRESH: Operator's guide

Contents

Carrier XtendFRESH Operation, Service And Parts Manual Manual pdf 38 page image

T-366 6–14Figure 6.20 Container Leakage Test PortsOne of the ports is connected to a pressurized air supply and the other is connected to a Magnehelic pressuregauge. The pressure gauge monitors the container leakage rate.Prior to performing the leak test:• Seal the floor drains with plugs• Ensure the unit condensate drain line is filled with water• Ensure the air makeup panel is tightly closed• Insert plug in drain hose. Install container curtain at the rear door• Seal the door shutWhen installing the door curtain (part number 76-50036-01), place the curtain around the door and seal the curtainalong the top and sides of the box and close the door. The curtain should be visible throughout the perimeter of thedoors. Tape may be used to assist in holding the curtain in position. Always use a new curtain as a small rip in the cur-tain can result in a failure of the test.After connecting the gauges, turn on the air supply and regulate the air pressure to 40-60 psi. When the Magnehelicgauge reads 2.5 inches of water gauge, shut off the air supply. Do not exceed 3.0 inches of WG.Monitor the Magnehelic pressure gauge for the drop in air pressure in the container. When the Magnehelic pressuregauge reads 2 inches, start a timer. When the Magnehelic pressure gauge reads 1 inch of WG, stop timing. Theamount of time expired should be no less than eight minutes or more for a 40 foot container and four minutes or morefor a 20 foot container. If it is less than the required time (i.e six minutes), then the container needs to be checked forleaks.Figure 6.21 Magnehelic GaugePort Location(Not available on all Units)* If ports are not available on Unitthen replace Manual Fresh Airpanel disc with a disc that haspressure decay ports.(PN: 79-04098-00)Start Timer*Shut Off Air SupplyCheck Containerfor Leaks* 40’ Container - at least 8 minutes20’ Container - at least 4 minutes