Table of Contents
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Table of Contents
Related Manuals for McQuay PFS-150B
Summary of Contents for McQuay PFS-150B
- Page 3 Introduction McQuay StarGateTM water-cooled chillers are completely assembled. factory wired. evacuated. charged, tested and ready for installation. Each unit consists of a water-cooled condenser with integral subcooler, multiple accessible semi-hermetic single screw compressors. replaceable tube shell-and-tube evaporator. and complete refrigerant piping. Liquid line components included are...
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Page 4: Installation
Installation Installation must be performed by qualified personnel who are familiar with local codes regulations, and experienced with this type of equipment Start-up by McQuayService is included on all units sold for installation within North America excluding Mexico. Two weeks prior notification of start-up is required. The contractor should obtain a copy of the Start-up Scheduled Request Form from the sales representative or from the nearest McQuayService office. -
Page 7: Water Treatment
Atmospheric air contains many contaminants which increases the need for water treatment. The use of untreated water may result in corrosion, erosion, sliming, scaling, or algae formation. A water treatment service is recommended. McQuay International is not responsible for damage or faulty operation from untreated or improperly treated water. -
Page 9: Refrigerant Charge
10°F (5.6”C) below minimum design ambient temperature. Note: Freeze damage is not considered a warranty failure and is not the responsibility of McQuay International. Insulate field water piping. especially on the chilled water side. Condenser Protection and Design Considerations If pond or river water is used as a condensing medium and the water valves leak, the condenser and liquid line refrigerant temperature could drop below the equipment room temperature on the “off... -
Page 21: Field Wiring
Field Wiring PFS unit compressors are single direction rotation compressors. For this reason proper phasing of electrical power is essential. Electrical phasing must be A, B, C clockwise for electrical phases 1, 2 and 3 (A=L1 ,B=L2,C=L3) The unit is supplied with single point factory power connection and includes one MotorSaver phase failure, phase reversal protective device that will prevent operation of the unit with incorrect power phasing. -
Page 25: Pre-Start-Up
Flush the evaporator and condenser system piping. Sequence of Operation The following sequence of operation is typical for McQuay models PFS 150B through PFS2 15B rotary screw water chillers. The sequence may vary depending on the software revision or various options that may be installed on the chiller. -
Page 27: Initial Start-Up
Initial Start-up CAUTION Initial start-up must be performed by McQuayService personnel. Set up control as described in the initial conditions. Turn front panel switch to Auto position (chilled water flow pump relay will energize). If the field installed flow indicator does not indicate chilled water flow after 30 seconds, the I l be alarm output wi energized.
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