PMCQ 110-E_1210 final.pdf - EVAPCO Europe NV

S P E C I F I C A T I O N S2.3.2 Bearings and Drivea) The fan shaft (s) shall be supported by heavy duty , selfaligning pillow block bearings with cast iron housingsand lubrication fittings for maintenance.b) The fan drives shall be V belt type with taper locksheaves designed for 150 % of the motor nameplatehorsepower.2.3.3 Motora) The fan motor shall be Totally Enclosed , Fan Cooled(TEFC) , squirrel cage, ball bearing type motor.b) The motor shall be minimum IP 55 degree of protection,Class F insulation, Service Factor 1 and selected for theappropriate cooling tower duty and the correct ambienttemperature but minimum 40°C.c) Motor bearings shall be greased for life or externalgrease lines shall be provided.d) The motor shall be mounted on an adjustable heavy dutysteel motor base.e) The motor power supply shall be _____ volts, ___ hertzand ______ phase.2.4. Casing Section2.4.1 Heat Transfer Coila) The coil(s) shall be all prime surface steel, encased insteel framework with the entire assembly hot-dipgalvanized after fabrication. Coil(s) shall be designedwith sloping elliptical tubes for free drainage of liquidrefrigerant and air pressure tested under water inaccordance with the PED 97/23/EC directive.2.4.2 Water Distributiona) The spray header and branches shall be constructed ofSchedule 40, Polyvinyl Chloride (PVC) pipe for corrosionresistance and shall have a steel connection to attach theexternal piping.b) The internal water distribution piping shall be easilyremovable for cleaning purposes.c) The branches have end caps to assist with debris removal.d) The water shall be distributed over the fill by precisionmolded ABS spray nozzles with large minimum 1 inchorifice openings to eliminate clogging.e) The nozzles shall be threaded into the water distributionpiping to assure positive positioning. The nozzles allowlarger debris to flow easily through the waterdistribution system.f) Water Recirculation Pump: the pump(s) shall be a closecoupled,centrifugal type with mechanical seal, installedat the factory. _________ kW totally enclosed, motorshall be furnished suitable for outdoor service on_________ volts, _________ hertz, and _________ phase.2.4.3 Drift Eliminatorsa) The drift eliminators shall be constructed entirely inertpolyvinyl (PVC) that has been specially treated to resistultra violet light.b) Assembled in easily handled sections , the eliminatorblades shall be spaced on 1 inch centers and shallincorporate three changes in air direction to assureefficient removal of entrained moisture from thedischarge air stream.c) The maximum drift rate shall not exceed 0,001 % of therecirculated water rate.d) The drift eliminators shall be Eurovent OM-14-2009certified.3.0 ACCESSORIES (optional)3.1 Electric Heatersa) The cold water basin shall be provided with a electricheater package to prevent freezing of the water in thecold water basin.b) The electric heater package includes : electric heaterelements and a combination of thermostat and lowwater level cutoff.c) The heaters shall be selected to maintain 4°C basin watertemperature at _____°C ambientd) The heater(s) shall be ____V / ____ phase / ____ Hz electricpower supply.3.2 Three Probe Electric Water Level Control Packagea) The condenser manufacturer shall provide an electricwater level control package instead of the mechanicalfloat valve arrangement.b) The package consist of the following elements :- Multiple heavy duty stainless steel SST 316 staticprobes mounted in a stilling tube outside the unit.Electrodes or sensors mounted inside the unit are notaccepted as there operation will disturbed by the movingwater in the basin.- A ABS , IP 56 case contains all the contactors for thedifferent level probes and willprovide a output signal of a relay for automatic fillingand one relay for alarm level.- The power supply to the control package is 24 Vac /230 Vac - ____ Hz .- A weather protected solenoid valve for the watermake up ready for Piping to a water supply withpressure between 140 kPa and 340 kPa.3.5 Vibration Switcha) A vibration limit switch shall be installed on themechanical equipment support and wired into thecontrol panel. The purpose of this switch will beinterrupt power to the motor in the event of excessivevibration.b) The switch shall be adjustable for sensitivity, and shallrequire manual reset.SPECIFICATIONS23