Speakman AIR2O CRS-2500 Owner's Manual

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Speakman CRS-2500

Owner's Manual

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CRS-2500

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Page 1 This Owner's Manual is provided and hosted by Appliance Factory Parts. Speakman CRS-2500 Owner's Manual Shop genuine replacement parts for Speakman CRS-2500 Find Your Speakman Air Conditioner Parts - Select From 1 Models -------- Manual continues below --------...
Page 2 CRS‐2500 OWNER’S Manual Description CRS‐2500 IDEC coolers are designed for outdoor installation. Only utility and duct connections are required at the point of installation. Field‐installed Thermostat is required (Single phase only) CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...
Page 3: Table Of Contents
CRS-2500 OWNER’S MANUAL TABLE of CONTENTS INTRODUCTION ................2 GETTING STARTED ..............3 OPERATION ..................4 HOW IT WORKS ................5 Principal of Operation ..........5 Water Consumption ............. 5 MAINTENANCE AND SERVICE ..........6 General Troubleshooting ..........6 Winterization ..............6 Requesting Service ............
Page 4: Introduction
WARNING – TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: A. Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire rated construction. B.
Page 5: Getting Started
GETTING STARTED THESE INSTRUCTIONS will allow you to start using your CRS-2500 immediately. To fully understand how to benefit from its features, it is important that you read the Operation section. • Insure power is connected. • Insure water supply is connected and turned on. •...
Page 6: Operation
OPERATION The unit is designed to work with any standard heat pump thermostat (Not included). (Unit powered thermostat will not work since the terminal on the board is all 0 potential). Turn Thermostat switch to cooling mode (This energizes the unit control board and the following sequence is initiated every time the thermostat mode is changed from either “Heat” or “Off” mode to cooling mode. • Begin Cooling Mode • Thermostat signal for equipment start‐up • Water inlet solenoid valve opens and water reservoir fills • 40 minutes following start-up signal, secondary fan and circulating pump starts. • 10 minutes after secondary fan(s) start, blower starts. System is now in Cooling Mode •...
Page 7: How It Works
HOW IT WORKS PRINCIPAL OF OPERATION Your CRS-2500 uses the natural evaporation of water to provide cooling in a two-stage process that produces lower air temperatures with less humidity than direct evaporative coolers. A working air stream flows through a direct cooling media causing the sump water to cool. This sump water is pumped through a tube and fin coil. This “indirect cooling media”...
Page 8: Maintenance And Service
It is advisable to cover the unit to prevent infiltration of cold outdoor air. REQUESTING SERVICE If you have difficulty contacting your installing contractor or service representative, please e-mail Speakman CRS at info@oasysairconditioner.com. CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...
Page 9: Maintenance Schedule
MAINTENANCE INSTRUCTIONS MAINTENANCE SCHEDULE MONTHLY Check all systems for correct operation with specific reference to: 1. Pumps Check for bearing noise Check bleed down pipes Check piping for leaks Check water levels in sump Check control sequence operation. 2. Fans Check for bearing noise 3.
Page 10 MAINTENANCE SCHEDULE CONTINUED SIX MONTHLY SCHEDULES 1. Electrical Check all connections on switchboard as well as motor connection terminals 2. Controls Set selector controls through all settings and check for proper operation. 3. Water Flow Check for free water flow and even distribution over cooling pads. SPECIAL ATTENDANCE 1.
Page 11: Model Drawings
Plan View CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...
Page 12: Wiring Diagrams
Wiring Schematic CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...
Page 13: Troubleshooting Guide
TROUBLE SHOOTING GUIDE RIGID MEDIA EVAPORATIVE COOLING SYSTEMS Problem: Inadequate Cooling Probable Cause Suggested Remedies Cooling Machine Undersized Replace with larger Machine Clogged or dirty Filters Clean as per suggested method Dry pads or lack of water while cooler is Check water distribution system for possible obstruction in operating tubing. Check pump Insufficient air discharge openings or Make sure that there is adequate provision for exhausting air inadequate exhaust from area being cooled., from the area being cooled, recommended one square meter causing humidity built up and discomfort. for 12000 cmh. Excessive Humidity In some areas there may be a few days during the summer when the relative humidity is high, resulting in complaints about poor cooling. The limitations of an evaporative cooling system under conditions of high wet bulb temperature have to be considered. Blower turning backwards Reconnect motor for correct direction. Blower installed backwards Remove and reinstall blower wheel to turn in the correct direction. Blower running too slow Check motor amps. If below name plate amperage, readjust the drive to increase blower speed. CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...
Page 14 TROUBLE SHOOTING GUIDE RIGID MEDIA EVAPORATIVE COOLING SYSTEMS Problem: Blower fails to start Probable Cause Suggested Remedies No fuse or fuse blown Replace fuse Loose electrical connection Check all electrical connections Defective starter/switch Replace switch Motor Brunt out Install new Motor Problem: Motor Overheats or burns out Probable Cause Suggested Remedies Improper amperage setting causing motor Check amperage and adjust speed to ensure that the motor overload. amperage is within the rated capacity of the motor amperes noted on the name plate of motor. Low voltage Check Incoming voltage and provide adequate safely. Incorrect power supply Check incoming power supply against rated voltage on motor plate. Incorrect motor Be sure the motor is the correct size for the cooler. Problem: Pump fails to operate Probable Cause Suggested Remedies Pump motor failure Replace pump Improper wiring of pump leads to motor or Recheck pump leads, connect to power and switch. switch. Loose electrical connections ...
Page 15 TROUBLE SHOOTING GUIDE RIGID MEDIA EVAPORATIVE COOLING SYSTEMS Problem: Pump runs but pads lack water Probable Cause Suggested Remedies Insufficient water in bottom tank Check float adjustment, water should be maintained at approx 2 ½” depth Pump suction screen plugged Clean screen Clogged tubing Clean the tubing Foreign matter lodged in tubing Remove pump tube and clean out the foreign matter Problem: Cooler noisy Probable Cause Suggested Remedies Wheel rubbing on housing Re position wheel Wheel out of balance due to dust etc Check wheel and clean Cooler delivering more air than needed Adjust drive to sow down blower Improper adjustment of blower shaft set Adjust blower shaft, set collars as required collars Problem: Continues Overflow of water Probable Cause Suggested Remedies Float valve adjustment incorrect Adjust float valve Valve stuck open because of lime deposit Clean valve and adjust Problem: Dust and salts being pulled of pads Probable Cause Suggested Remedies ...
Page 16 TROUBLE SHOOTING GUIDE RIGID MEDIA EVAPORATIVE COOLING SYSTEMS Problem: Water being thrown into duct or blower section Probable Cause Suggested Remedies Loose distribution tubing or pipe connections Check and tighten all pipe connections Break in the water pipe line Replace any cracked or broken pipes Spray being generated at float Make requisite adjustment to prevent spray Pads shifted or distributor not properly Make sure there is no water carry over from any part of the installed water distribution system Pads have become choked because of dust Clean pads as per suggested procedure or replace as required and/or salt and therefore there is a water carryover Pump delivering excessive water to pads Adjust water output of pump Problem: Formation of foam or suds Probable Cause Suggested Remedies Because of water quality the pump is churning Drain and refill sump with fresh water, may have to repeated at up suds required for severe cases Algae in sump water Drain cooler bottom and clean thoroughly, fill with fresh water Pads remain wet after shut down Adjust float to ensure that water level in sump does not touch the bottom of the pads Problem: Rapid formation of salt deposit of pads Probable Cause Suggested Remedies ...
Page 17 CRS‐2500 OWNER’S MANUAL| www.oasysairconditioner.com |+1‐800‐974‐1078 ...