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General| Model | RTAF 185 SE SN LN |
|---|---|
| Category | Chiller |
| Cooling Capacity | 185 tons |
| Refrigerant | R-134a |
| Compressor Type | Screw |
| Voltage | 460V/3Ph/60Hz |
Alerts to potentially hazardous situations, injury, or property damage, with clear definitions of WARNING and CAUTION.
Recommendations to avoid death, injury, or equipment/property damage during maintenance and service.
Details on warranty terms, void conditions, and startup requirements for validation.
Verifying the unit is correct, inspecting exterior for damage, and reporting issues to the carrier and sales office.
Checklist to complete upon unit receipt to protect against transit damage, including concealed damage reporting.
Tasks generally required of the contractor during RTAF unit installation.
Recommended lifting methods, including securing points, slings, and handling precautions.
Guidance on evaporator water connections, flushing piping, air vents, pressure gauges, and shutoff valves.
Requirements for sizing, selecting, and installing power supply wiring and fused-disconnect switches.
Checklist of procedures to verify before starting the unit installation.
Criteria for verifying supply voltage, including range, fluctuation, and imbalance.
Explanation of excessive voltage imbalance and calculation method for determining it.
Importance of proper motor rotation and how to confirm electrical phase sequence.
Step-by-step procedure for daily unit startup, including operator actions and sequence of operation.
Procedure for taking the system out of service for an extended period, including leak testing and draining.
Procedures for seasonal startup, including valve checks, drain plugs, and auxiliary equipment servicing.
Procedures for restarting the unit after an extended shutdown period, including verifying valves and checking water circuits.
Performing maintenance at recommended intervals to increase chiller life and minimize failures.
Procedure for charging refrigerant and oil, including steps for adding and removing refrigerant.
Steps for isolating refrigerant charge on the low side, including closing valves and using pumps/vacuum.
Procedures for adding oil to the motor cavity or suction line before compressor installation.
Procedure for isolating refrigerant charge in the evaporator for compressor maintenance.
Instructions for replacing the refrigerant filter element based on temperature gradient or pressure drop.
Procedure for injecting a small amount of oil into the compressor before charging the system.
Procedures for conservation and emission reduction, including refrigerant recovery and recycling.
Importance of proper oil and refrigerant charge for unit operation and performance.
Steps for field oil-charging, including initial charging circumstances and procedures for removing/adding oil.
Instructions for cleaning condenser coils, including agent recommendations and rinsing procedures.
Guidelines for repairing or replacing microchannel coils, including available repair kits.
