RPC Evaporative Air Conditioning Owners Manual Installation, Operating & Service Instructions Down Series Top Series Side Series January 2009 Manufacturers and Designers of Technically Advanced Quality Heating and Cooling Products
SERVICE: 1300 650 644 For all your Braemar warranty and service needs. Or Contact your local Braemar direct dealerr. TECHNICAL L SUPPORT CENTRE: 1300 650 399 For technical support regarding the installation of this product SALES: 1300 650 141 For all your sales enquiries Seeley International Pty Ltd has a policy of continuous product development and therefore reserves the right to make changes to these specifications without notice.
COOLER DETAILS When ever you need to contact your Dealer regarding Service or Warranty please quote the unit Model number and Serial number as shown below. Model No................................... Serial No.................................. For your future reference: Air conditioner purchased from......................................................... Air conditioner purchase date ...... / ...... / ....... Phone No ....................... Air conditioner installed by..............................
1 CONTENTS SAFETY INFORMATION INTRODUCTION ~ Installation Recommendations And Procedures ~ Effective Cooling Requirements 2 3 3 INSTALLATION ~ Mounting The Cooler ~ Flexible Connector ~ Water Supply ~ Bleed Control ~ Bleed System ~ Water Manager (Optional) ~ Electrical Connection ~ Commissioning The Electronics (Variable speed only) ~ Setting The Motor Current ~ Pulley Adjustment ~ Motor Low Speed Setting ( Variable speed only) ~ Mounting Wall Control 4 5 6 6 7 7 8 10 11 12 14 15 WALL CONTROL
2 SAFETY INFORMATION EMPLOYER AND EMPLOYEE RESPONSIBILITIES The installation and maintenance of evaporative air conditioning units, particularly at height, has the potential to create Occupational Health and Safety issues for those involved. Installers are advised to ensure they are familiar with relevant State and Federal legislation, such as Acts, Regulations, approved Codes of Practice and Australian Standards, which offer practical guidance on these health and safety issues.
INTRODUCTION 3 Congratulations on choosing a new Braemar cooler. Your cooler is built from the highest quality materials and engineered to provide many years of economical, trouble free cooling. Please take a few minutes to read these instructions so you have a full understanding of how to operate your cooler. Your installer should demonstrate the features and procedures set out in these instructions.
4 INSTALLATION Important ! Installation must be in accordance with Municipal Building Regulations, Relevant Electrical Wiring Regulations, and any other relevant Codes and Regulations. All installation work to be carried out by Authorized Persons only. Mounting the Cooler These units have been designed to be directly mounted on top of a suitably sized and strengthened metal duct. Fixing is by means of self drilling screws or rivets through the steel mount on the bottom of unit to metal duct.
5 INSTALLATION Flexible Connector (Side & Top Series) FITTING INSTRUCTIONS The flexible connector has not been fitted at the factory. It is intended to be fitted on site to allow for better alignment to the ductwork. 1. Position the flexible connector (part A) with the seam to the bottom. The corners of the skirt will need to be slit approximately 20mm to prevent bulging at the corners. 2. The aluminium straps B,C,D & E fit inside the skirt. 3.
6 INSTALLATION Water Supply Mains connection is made to the float valve fitted in the reservoir. The float valve must be set to maintain the reservoir water level about 10 mm below the overflow level. (Fig. 5). The mains water supply should be fitted with a ball valve and connection to the unit from the stopcock be made with the appropriate copper pipe and fittings.
7 INSTALLATION Bleed System The bleed control tap is located externally on a corner pillar. Adjustment to the bleed rate is made by turning the black/red tap control to the desired setting. Check the bleed rate by running into a graduated container for a set time, say 10 minutes. 6 A = Bleed Tap B = Min/Max Label C = Corner Pillar D = Supply Hose from Pump E = Bleed Hose to Drain C B BLEED CONTROL A Max D Min E Recommended Bleed Rates Model lp10 min lph RPC250 1.2 7 RPC320 1.6 10 RPC400 2.
8 INSTALLATION Electrical Connection ¾ Mains Supply It is required that all units be connected to the mains supply through an independent circuit, suitably protected by fuse or circuit breaker. Ensure that the power supply is sufficient for the rating indicated on the serial plate. Wire the unit in accordance with all state and local regulations. 8 NOTE Mains cable must be double insulated if both mains and control cables are run in the same conduit.
9 INSTALLATION Electrical Connection ¾ Connection Down Discharge Units A hole is provided in the side of the blower housing for electrical entry. The mains lead and control cable are passed through this hole and wired to the control box. On installation pass the cables through the hole into the dropper and then into the roof cavity. 9 SERVICE CORD & LOOM FROM BASE OF COOLER z z Side Discharge Units Knock outs are provided on the outlet panel for mains and control cable loom.
10 INSTALLATION Commissioning The Electronics Module (Variable Speed only) We recommend that you have a short test lead on hand for Coolers with a hard wired control system. You can then take the wall control to the roof and control the cooler from there. This will save you a lot of time. The short test looms are available from your Seeley spare parts distributor (P/No. 831534). Power up the cooler using the on / off switch on the Electronics control module. Test motor and pump operation.
11 INSTALLATION Setting The Motor Current Important! The motor pulley and belt tension need to be adjusted to ensure that the motor is running at its rated capacity. If the current is set to low, the cooler will not perform to its optimum capacity, and the motor speed control may not work effectively. The RPC two Speed units need to have full load amps checked on high and low speeds.
12 INSTALLATION B A UT YO C EY IN D LL All RPC units are fitted with a variable pitch pulley so that the full potential of the motor can be utilised. The pulley is set at the factory to approximate the full motor load with the unit at free delivery. When installed and operating against system resistance, (with doors and windows open fully) adjustment may be made to the pulley in order that all the available power is utilised.
13 INSTALLATION Belt Tension Note! This adjustment must be done immediately after the motor current adjustment has been completed. 15 A B C 15/20 mm Belt tension is important, if it is too tight there will be excessive belt and bearing wear. If belt tension is too loose there will be belt slip and excessive wear, accompanied with noise and loss of cooler performance.
14 INSTALLATION Motor Low Speed Setting (Variable Speed Only RPC coolers fitted with the Electronics Module and Variable Speed Wall Control, will function across a wide speed range. The minimum speed has been factory set, and should not require any adjustment under normal circumstances. However, some adjustment may be necessary to suit specific installations. 16 After you have set the motor current and belt tension correctly, check the speed variation of the cooler.
15 INSTALLATION Mounting the Variable Speed Wall Control 17 When selecting a position for the wall control, avoid the following locations: Direct sunlight An outside wall Any heat sources (eg. refrigerator, heater etc.) A position in direct line of a cooling outlet Mounting the wall control in a position near any heat source or cooling outlet will affect its ability to control temperature. It is advisable to locate the wall control about 1.
16 INSTALLATION Mounting the Variable Speed Wall Control Pull the low voltage cable through the large hole and plug it into the wall control. Feed the excess cable back into the hole and seal. Slide the wall control over the protruding bracket tabs. Pull the wall control down so that the bracket tabs engage with the keyway slots on the back of controller 21 22 Plaster Board 23 To mount the wall control on a brick wall, follow the previous instruction using the wall plugs and screws provided.
17 WALL CONTROL FUNCTIONS Starting Your Cooler 24 The POWER button turns the cooler on and off. There are two modes of operation to choose from, Automatic mode or Manual mode. When the cooler is turned on, it will start in the mode of operation it was in when last turned off. If your cooler has not been operated for a while, then when you start it, "Pre Cool Cycle" may sometimes flash on the display as shown.
18 WALL CONTROL FUNCTIONS Manual Mode To switch to Manual mode, press AUTO until "Man" appears in the display. In Manual mode the cooling level can be manually adjusted. In Manual mode, press COOL to choose between circulating cool air or fresh air. When "Cool" is displayed, fresh cool air will circulate into the building. When "Vent" is displayed as shown (fig 28), fresh air will circulate through the building.
19 WALL CONTROL FUNCTIONS Timed Automatic Stop You can also set the cooler to turn off after a set number of hours. 30 1. To set a delayed stop time, press TIMER with the cooler running. "Stopping in" will display. 2. Press S or T to adjust the number of hours before the cooler will stop. The maximum delay setting is 24 hours. ILL1137-A 3. Press TIMER again to begin timed stop. Using The Cooler Now that you have read these instructions, press the POWER button to turn your cooler on.
TWO SPEED CONTROL FUNCTIONS 20 Two Speed Control - Turn on the water at the source and ensure that any shut off valve is open. - Turn on the electrical supply and the mains isolator at the air conditioner. - Wait for the tank to fill with water. - Turn on the pump by switching the Cool switch on the wall control to Cool. - Wait 2 - 5 minutes for the pads to saturate with water. - Select either High or Low fan speed. - Turn on the fan by switching the Fan switch to ON.
21 COMPLETING THE INSTALLATION 31 Testing The Cooler Once you are satisfied that the Cooler is installed and commissioned correctly, it is important to run the cooler and ensure that everything is working as it should. Check that the unit runs quietly and with an even distribution of air to all outlets. Make sure there are no water leaks. Where fitted, initiate a drain of the tank by pressing the S and T buttons together for 1 second when the controller is OFF.
MAINTENANCE 22 End of Season Maintenance • Turn off the water supply. • Remove filter pad frames. • Turn off the power at isolating switch inside cabinet. • Hose both sides of the filter pad frames to remove dust, salts pollen etc. If pads are deteriorating replace as required. • Check and clean the water distributor channels. • Empty the water reservoir through the outlet provided. Thoroughly clean the reservoir. Do not replace the outlet. • Ensure that water is not carrying over onto the motor.
MAINTENANCE 23 Replacing the Filter Pads If, during your Pre-Season or End of Season maintenance you determine that the filter pads need replacing, you will be able to purchase replacements from you local Dealer. Replacing the pads is as follows. • Switch off the air conditioner. • Remove the pad frames from the air conditioner by turning the black latch at the top of the pads, tilting the pad forward and lifting.
24 TROUBLE SHOOTING PROBABLE CAUSE SUGGESTED REMEDY • Inadequate Cooling Insufficient air discharge openings. Inadequate exhaust for area being cooled, causing high humidity and discomfort. Undersized air conditioner. Ducts blocked or collapsed Clogged or dirty filter pads. Dry pads or lack of water while the air conditioner is operating. Excessive Ambient Humidity. (see also top of page) Fan running too slowly. Belt slipping. Make sure adequate openings are provided to exhaust the incoming cool air.
