TABLE OF CONTENTS Model ……………………………………………………………………………………………. 1 Caution ………………………………………………………………………………………….… 2 Starting Check List ………………………………………………………………………………. 3 Wiring Diagram …………………………………………………………………………………… 5 Setting Electronic Controls & Electronic Control Board………………………………………. 6 Chilled Water Distribution Piping ……………………………………………………………….. 8 Installation Instructions ………………………………………………………………………….. 9 Special Instructions ……………………………………………………………………………….
WATER CHILLER STARTING CHECKLIST PROPER VOLTAGE Check the voltage on the chiller to see that it matches your power supply. CRANK CASE HEATER Power to the unit should be on for 3 hours prior to full usage to allow the crank case heater to heat the compressor. PLEASE READ SECTION ON CRANK CASE HEATER ON PAGE 17. MOTOR ROTATION Make sure the fan motors and water pumps are running in the correct rotation.
CONT. WATER CHILLER STARTING CHECKLIST 3 ELECTRIC – POWER A good test to make sure power is off to the unit is to turn on the water pump switch. If power is on, the light on this pump will be on. We recommend you take caution in all judgment about the power being on. The best test to find if the power is on is to use a voltmeter. Please Note: A single-phase condition can cause a pilot light to be out and still have voltage to the unit. TESTING STANDARDS All components on the chiller meet UL's standards.
24V RED 1C T1 T2 T3 Red Black Yellow RED Temp. Probes BLACK BLACK WHITE/BLACK Pressure Swich Conn. Pressure Switch Conn.
SETTING SOLID STATE CONTROLS 4 Now a Standard Feature on: 50,100,150,200,300,AND 400AC/WC Chillers This unit has solid-state controls that regulate the temperature of the refrigeration system. After the unit is wired to the proper voltage, the temperature can be set. Setting the Temperature Press and hold the button marked “display set point” as you turn the set point screw. The temperature shown on the discharge temperature display will indicate the temperature set point as you turn the set point screw.
CHILLED WATER DISTRIBUTION PIPING The chilled water distribution piping is an important factor in the performance of the 6 water chiller. Proper piping will add to the LIFE of your chiller. This chiller is designed to be a containment free system. The chilled water piping should be the same. NO BLACK IRON PIPE. 1. If you are installing this water chiller to some existing chiller water lines (Black or galvanized) there is a good chance there will be rust in this system.
INSTALLATION INSTRUCTIONS Air or Water Cooled Chillers 1. When the chiller is received, check for8any shipping damage. If any is found, a freight claim should be filed at once with the carrier. 2. This water chiller is designed with a contaminant free chilled water system, stainless steel reservoir, and all copper evaporator. Installed properly, it will give you years of trouble free service.
7. Check the voltage on the chiller to see that it matches your supply. When applying power to the water pump (by turning the manual switch on), make sure all the switches on the control panel are in the "off" position. It is necessary to check the rotation of the water pump. The motors9 on all pumps have an internal overload protection. 8. Power to the unit should be on for 3 hours prior to full usage to allow the crank case heater to heat the compressor.
SPECIAL INSTRUCTIONS WATER PUMP The water pump is controlled by the manual switch for off and on operations. The motor on this pump has a built-in overload protection, as do all the motors in our system. ELECTRICAL CONTROLS - Control Circuit 24 Volts The control circuit for the refrigeration system has several controls wired in series. First are the high and low-pressure switches that are mounted in the control panel.
CHILLED WATER CIRCUIT The chilled water is pumped from the chiller's water tank to the discharge outlet of the chiller. Then from the discharge outlet, the water travels to the object to be cooled, through the heat exchanger, and returns through the chillers return line into the water tank. Be sure to keep all lines full size (1"). If the size of the lines is reduced, then the flow of water will be restricted, and thus resulting in improper chilling.
REFRIGERATION SYSTEM: The refrigeration system is a medium temperature system with a range from 350 F to 700 F. This is the most efficient range. If temperatures below or above this range are required, they should be discussed with our engineering department. The refrigeration system also includes a hermetically sealed refrigeration system and all parts, except the evaporator coil, are standard to the refrigeration industry.
FAN MOTORS SPECIFICATIONS: H.P. 1/2 VOLTAGE - 220/230/440 3 Phase HZ-50-60 RPM - 1140 OVERLOAD - Automatic, Internal FRAME - LA56 MTG - Rigid, Open Motor CAT. NO. Leeson #115726 ROTATION: Motor runs clockwise (CW). FAN BLADE: 18" x 230 SAFETY: Avoid personal injury or equipment damage by disconnecting electrical power before working on the motor. Make sure the power is off when checking each phase. MAINTENANCE: 1. 2. 3. There are no lubrication points; therefore, no lubrication is necessary.
Installation, Operation and Maintenance Instructions. Model NPE/NPE-F DESCRIPTION & SPECIFICATIONS: The models NPE (close-coupled) and NPE-F (framemounted) are end suction, single stage centrifugal pumps for general liquid transfer service, booster applications, etc. Liquid-end construction is all AISI Type 304 stainless steel, stamped and welded. Impellers are fully enclosed, non-trimable to immediate diameters. Casings are fitted with a diffuser for efficiency and for negligible radial shaft loading.
2.3.2. Place unit in position on wedges located at four points (two below approximate center of driver and two below approximate center of pump). Adjust wedges to level unit. Level or plumb suction and discharge flanges. 2.3.3. Make sure bedplate is not distorted and final coupling alignment can be made within the limits of movement of motor and by shimming, if necessary. 2.3.4. Tighten foundation bolts finger tight and build dam around foundation.
9.4.4. Remove impeller (101) by turning counterclockwise when looking at the front of the pump. Protect hand with rag or glove. CAUTION Failure to remove impeller in a counter-clockwise direction may damage threading on the impeller, shaft or both. 6.1.1. Single-phase motor: Non-reversible. 6.1.2. Three-phase motor: Interchange any two power supply leads. 7. Operation: 7.1. Before starting, pump must be primed (free of air and suction pipe full of liquid) and discharge valve partially open.
200AC 18
WARNING Overcharging a refrigeration or air conditioning system can be dangerous. **** If a system refrigerant overcharge is sufficient to immerse the major parts of the motor and compressor in liquid refrigerant, a situation has been created which, when followed by unusual circumstances can lead to compressor housing seam separation or rupture.
SERVICE BULLETIN HERMETIC COMPRESSOR ELECTRICAL TERMINAL VENTING CAN BE DANGEROUS **** When the insulating material, which supports a hermetic compressor electrical terminal, suddenly disintegrates due to physical abuse or as a result of an electrical short between the terminal and the compressor housing, the terminal may be expelled, venting the vaporous and liquid contents of the compressor housing and system.
Hermetic compressors can be properly serviced without unnecessarily removing the terminal PROTECTIVE COVER by adhering to the following service procedures: 1. If the branch circuit, short circuit, and ground fault protective device, i.e., fuse or circuit breaker, is open, this is a strong indication that an electrical problem exists and must be found and corrected.
8. Repeat #5 testing, carefully checking for ground, directly between each compressor terminal (C, S, & R) and ground. 9. If once again a ground is indicated, proceed to properly replace the compressor, as it has failed and cannot be repaired. 10. It is important to note that a volt-ohmmeter may be used only to check the resistance and/or continuity of the motor windings.
Again, we want to stress that it is essential that WHENEVER ELECTRIC POWER is applied to the motor-compressor, the terminal PROTECTIVE COVER must be properly in place. Servicing refrigeration and air conditioning systems can be dangerous, and extreme caution in all respects should be exercised by the personnel servicing such equipment. The precautions discussed in this bulletin deal only with those dangers associated with VENTING TERMINALS.
MAINTENANCE INFORMATION 1. There are no lubrication points on the chiller. All motors have permanent lubrication in the bearings. 2. The water that is used in the chilled water circuit has no special requirements, except that deionized water cannot be used. The water should be clean and some type of water conditioner can be used. Nothing should be used in the chilled water circuit that could damage the all copper Heat Exchanger. THIS INCLUDES THE USE OF DEIONIZED WATER. 3.
MAINTENANCE INFORMATION Part ll NOTICE OF EXPANSION VALVE This is a standard Alco Expansion Valve, Model #TLCE (size) HW. These valves come from the factory pre-set. For the proper super heat, do not try to adjust the super heat on this valve unless you call the factory service department. This Alco valve is one of the most reliable parts. If this valve needs to be changed out, do it without losing the R22 charge. To do this, turn the receiver off at the liquid line to the expansion valve.
TROUBLE SHOOTING – PART 1 SYMPTOM DIAGNOSIS REMEDY Check Power supply Electrical circuit Correct circuit breaker Repair or replace bad circuit Line load voltage Temperature control Compressor overload Low pressure switch High pressure switch Manual switch Compressor All control circuit Correct voltage condition Repair or replace Replace Repair or replace Repair or replace Replace Replace Repair Check Compressor won't run Compressor runs No refrigeration Refrigerant leak Stuck expansion valve Repa
TROUBLE SHOOTING - PART II REFRIGERATION SYSTEM INTERNAL PRESSURE USING REFRIGERANT R-22 * High Pressure Switch: Manual Reset - Cut out at 425 P.S.I. * Low Pressure Switch: Automatic Reset - Cut out at 25 P.S.I. WORKING REFRIGERANT PRESSURES R-22 * High Pressure: 185 to 325 P.S.I. * Low Pressure: 45 to 70 P.S.I. ***NOTE*** These pressures are under normal ambient temperatures and chilled water temperatures.
CHILLER PARTS IDENTIFICATION 28 200AC
PARTS LIST 200AC/WC - 460/3 or 230/3 If this unit has special feature(s) installed, see appendix for part number(s). Part Number Description 460/3 230/3 Qty.
Schreiber Lim ited Warranty Schreiber warrants the product described herein against defective m aterial or workm anship for one year from the date of purchase. If any part is found to be defective within the warranty period, Schreiber, or its authorized service agent, will replace, or at Schreiber's options, repair the part free of charge for m aterials and labor. This warranty does not cov er dam age caused by m isuse, accident, abuse, incorrect installation or operation.
