Chiller basics With Phil Rodin. Things to check when chiller is not running or is in alarm.

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Presentation transcript:

Chiller basics With Phil Rodin

Things to check when chiller is not running or is in alarm

Alarm showing water flow, pumps both chilled and condenser water types of flow switches

Alarm showing water flow, pumps both chilled and condenser water types of paddle switches

Alarm showing water flow, pumps both chilled and condenser water types of electronic flow switches Electronic flow switches have probes

Alarm Conditions High Pressure 1. Low water flow 2. Cooling tower 3. Strainers (locations?) 4. Valves (electric or manual types) 5. The entering and leaving water temp. 6. Approach temp

Alarm conditions

Sure flex #9

Alarm conditions

Alarm conditions Chilled water flow 1. Pumps 2. Strainers 3. Valves (manual and electric) 4. Flow switches 5. Water temp in and out 6. Approach temp

Alarm conditions Chilled water flow (cont.) PRV

What is the oil temperature? 1. Feel the tank or read with inferred. 2. Check control panel 3. Check for power 4. Think out of the box, How can we heat this?

What is the oil temperature? (cont.)

Tube sheets

Chiller barrel

Enhanced tubes

Inside and outside tubes

Vapor to liquid

Flooded Evaporator

What is the oil temperature? (cont.)

Pressure & Temp. Gauges (electronic)

Pressure & Temp. Gauges (fluid type)

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

Chiller Surging (High & Low Surging) High Surge on Low Pressure Machines 1. Water temp. in and out. 2. Approach 3. Cooling Tower 4. Purge 5. Refrigerant levels

Chiller Surging (High & Low Surging)

Cooling Towers

Chiller Surging (High & Low Surging)

Chiller Surging (capacity control)

Chiller Capacity Control

Low End Surge 1. Water temp. In and out 2. Approach Temp. 3. Water pressure 4. Refrigerant levels

Low End Surge

Transducers & Sensors Types

Panel Codes 1. Carrier code York code 9675 aka YORK 3. Trane code (different combinations)

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)

Cavitation of Pumps 1. Strainers 2. Water pressures 3. Couplings 4. Valves 5. Primary or Secondary Loop

Questions (There is no such thing as a dumb question) ?