Refrigeration
Industrial & Commercial Refrigeration Survey
Field checklist for machinery-room and box surveys of industrial and commercial refrigeration. Tie each rack or condensing unit to the rooms it serves before leaving the site.
Compressor Racks & Machinery
- Record compressor manufacturer, model, serial, refrigerant, and horsepower or displacement.
- If the panel is live and the owner allows it, log suction and discharge pressure next to the tag.
- Note oil level, oil separator, receiver level, and any active controller alarm.
- Photograph the rack nameplate and the valve train in one sequence.
Unit Coolers & Evaporators
- Identify the room, setpoint, and evaporator tag for each coil on the system.
- Count fans and note fans that are off, noisy, or iced unevenly.
- Inspect the drain pan, condensate line, and heat trace. Note ice on the floor under the unit.
- Record coil fin condition and whether the unit is the one shown in the alarm log.
Defrost Systems
- Record hot gas versus electric defrost for each evaporator.
- Note posted defrost duration and the termination method.
- On hot gas, identify the solenoid, check valve, and whether melt water is refreezing in the drain.
- On electric, note heater amperage if tagged and any failed heater circuit left in the log.
Condensers & Heat Rejection
- Record air-cooled versus evaporative condenser, fan count, and fan staging.
- Note fouled fins, scale, or fans that do not run with the others.
- Log receiver level and liquid-line sight glass condition.
- Identify where condenser discharge air can re-enter an intake or a dock.
Relief Valves & Slab Freeze Protection
- Record relief valve manufacturer, set pressure, and discharge location. Note caps, paint, or a discharge aimed at a walkway.
- Do not guess the refrigerant if it is not posted on the machinery or the valve tag.
- Locate underfloor or slab heat pumps, glycol concentration if posted, and the control setpoint.
- Photograph insulation and vapor barrier failures at slab penetrations and suction lines.
Supported Facility & Project Types
- Cold Storage & Distribution
- Food Processing
- Supermarkets & Grocery
- Logistics Warehouses
- Industrial Process Refrigeration
- Pharmaceutical & Controlled Temperature
- Ice Production
- Commissary & Central Kitchen