Download - Chiller basics With Phil Rodin. Things to check when chiller is not running or is in alarm
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Chiller basics
Chiller basics
With Phil Rodin
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Things to check when chiller is not running or is in alarm
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Alarm showing water flow, pumps both chilled and condenser water types of flow switches
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Alarm showing water flow, pumps both chilled and condenser water types of flow switches
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Alarm showing water flow, pumps both chilled and condenser water types of paddle switches
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Alarm showing water flow, pumps both chilled and condenser water types of electronic flow switches
Electronic flow switches have probes
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Alarm Conditions
High Pressure1. Low water flow2. Cooling tower3. Strainers (locations?)4. Valves (electric or manual types)5. The entering and leaving water temp.6. Approach temp
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Alarm conditions
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Sure flex #9
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Alarm conditions
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Alarm conditions
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Alarm conditionsChilled water flow
1. Pumps2. Strainers3. Valves (manual and electric)4. Flow switches5. Water temp in and out6. Approach temp
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Alarm conditionsChilled water flow (cont.)
PRV
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What is the oil temperature?
1. Feel the tank or read with inferred.2. Check control panel3. Check for power4. Think out of the box, How can we heat
this?
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What is the oil temperature?(cont.)
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Tube sheets
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Chiller barrel
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Enhanced tubes
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Inside and outside tubes
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Vapor to liquid
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Flooded Evaporator
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What is the oil temperature?(cont.)
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Pressure & Temp. Gauges(electronic)
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Pressure & Temp. Gauges(fluid type)
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Chiller Surging
ASK YOURSELF?????1. Is it a high or low end surge?2. Are your amps going up or down?3. The sound? a. Is it an elephant b. Is it a grumble
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Chiller Surging(High & Low Surging)
High Surge on Low Pressure Machines1. Water temp. in and out.2. Approach 3. Cooling Tower4. Purge5. Refrigerant levels
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Chiller Surging(High & Low Surging)
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Cooling Towers
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Chiller Surging(High & Low Surging)
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Chiller Surging(High & Low Surging)
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Chiller Surging(High & Low Surging)
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Chiller Surging(capacity control)
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Chiller Capacity Control
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Low End Surge
1. Water temp. In and out2. Approach Temp.3. Water pressure4. Refrigerant levels
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Low End Surge
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Low End Surge
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Transducers & Sensors Types
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Transducers & Sensors Types
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Panel Codes
1. Carrier code 11112. York code 9675 aka YORK3. Trane code ++--++ (different
combinations)
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How’s the Chiller Running?
Is the chiller running in local?Is the chiller running in EMS?Are the pumps running?Are the valves open?Hand –off Auto (Think before going to hand)
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Cavitation of Pumps
1. Strainers2. Water pressures3. Couplings4. Valves5. Primary or Secondary Loop
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Questions(There is no such thing as a dumb question)
?
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