Vol 2 - Garney Construction

2.10 SOURCE QUALITY CONTROLA. Factory Tests and Adjustments: Test equipment actually furnished.B. Testing Provisions:1. Provide tachometer access holes large enough to accept standardtachometer drive shaft.2. Center punch fan shaft to accommodate tachometer readings.C. Manufacturer’s Tests:1. Electrical Circuits:a. Tested and checked as to proper function.b. Perform dielectric strength test.2. Air Handling Unit Cabinet Tests:a. Air Pressure Leak Testing: For modules under positive pressurelocated on discharge side of a fan, maximum permissible airleakage shall not exceed one percent of specified airflow, whensubject to 8-inch water gauge differential pressure.b. Panel Deflection Testing: For modules under negative pressurelocated on the suction side of the fan, maximum permissible paneldeflection shall not exceed 1/200 th of panel length, when subjectto 8-inch water gauge differential pressure.c. Leakage Test Failure Guarantee: Upon completion of leakage test,if unit does not meet specified performance for deflection orleakage, Owner may elect to have unit modified to meet specifiedperformance or may request a credit according to performancefailure.D. Balancing:1. Completed fan assemblies shall be dynamically balanced to minimumgrade of G 6.3 per AMCA 204 at design operating speed.2. Fans controlled by variable frequency drives shall be dynamicallybalanced at speeds 25 percent, 50 percent, 75 percent, and 100 percentof design RPM.E. Vibration Test:1. Each fan furnished with a 5-hp or larger motor shall have factory runvibration test, including vibration signatures taken on each bearing inhorizontal, vertical, and axial direction.2. Vibration reading as measured at fan scheduled rotational speed shallnot exceed the following values when fan is rigidly mounted:PW/WBG/382059AIR HANDLING UNITSAUGUST 15, 2012 23 77 00 - 17©COPYRIGHT 2012 CH2M HILL