CyberChiller Series Installation, Operation & Maintenance Manual
4.0 MAINTENANCE/REPAIRS | • Clean accumulations of dust and dirt from all |
| interior and exterior surfaces. (Quarterly) |
4.1Periodic General Maintenance
Systematic, periodic general maintenance of the CyberChiller unit is recommended for optimum system performance. General maintenance should include, but is not limited to the following: tightening electrical connections, cleaning the interior of the unit, inspecting the unit’s components visually. Checking level of refrigerant and ensuring no moisture is in the refriger- ant.
Use copies of the Periodic General Maintenance Checklist in this manual, (see Appendix A), to record periodic general maintenance inspections. For assistance, contact the SATS Product Support Group. Ensure adherence to all safety statements while performing any type of maintenance.
WARNING
Turn off power to the unit at the main power disconnect switch unless you are performing tests that require power. With power and controls en- ergized, the unit could begin operating automatically at any time.
Hazardous voltage will still be present in the CyberChiller and condenser or dry cooler even with the unit turned off at the control panel. To isolate the unit for maintenance, turn off power at the main power disconnect switch.
Always disconnect main power prior to performing any service or repairs. To prevent personal injury, stay clear of rotating components because automatic controls may start them unexpectedly.
This unit employs high voltage equipment with rotating components. Exercise extreme care to avoid accidents and ensure proper operation.
4.1.2Compressor
The refrigerant compressor and its drive motor are hermetically sealed. The compressor crankcase has a lifetime supply of oil and the drive motor has permanently lubricated sealed bearings. Check the refrigerant charge using the sight glass while the unit is running. If low on charge, check for refrigerant leaks.
WARNING 
Phosgene, a deadly, poisonous gas, is generated when refrigerant is exposed to flame. Always ensure adequate ventilation during refrigeration repairs.
This equipment should be serviced and repaired by a journeyman or a qualified refrigeration technician only.
Always recover all refrigerant prior to any system repairs, failure to do so may result in system over pressurization and rupture.
4.1.3Outdoor Condenser/Fluid Cooler
Maintenance access to the condenser, (remote air cooled units) or dry cooler, (glycol cooled units) is through one or two removable panels (depending on model). Examine the areas around the air inlet and outlet grills, fans, motors and coils. Use a vacuum cleaner with a soft bristle brush to clean dirt from components. Clean the coil of all debris that will inhibit airflow. This can be done with a soft brush and compressed air or with a commercial coil cleaner. Check for bent or damaged coil fins and repair as necessary. Do not permit snow to accumulate on or around the condenser or dry cooler in the winter. Check all refrigerant lines and capillaries or coolant lines for vibration isolation and support as necessary. Check all refrigerant and coolant lines for signs of leaks.
4.1.1General
•Check the “Y” strainer by removing the screen and checking for accumulations of particulate. Clean as required. (Monthly)
•Examine all wiring for signs of chafing, loose connections or other obvious damage. (Quarterly)
•Examine brackets, motor mounts and hardware for loose or missing parts or other damage. (Quarterly)
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| (©October, 2006) | |
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