The manual opens with mandatory lockout/tagout procedures. For ALS chillers operating with R-134a or R-407C refrigerants, high-pressure risks are significant. The manual specifies PPE requirements and safe handling of screw compressor oil.
Test the capacity control solenoid valves for electrical continuity. mcquay als chillers service manual
Before performing any service operations, technicians must strictly enforce safety isolation. The manual opens with mandatory lockout/tagout procedures
| Frequency | Action (per manual) | Manual Reference | | :--- | :--- | :--- | | | Check sight glass for moisture (green = dry, yellow = wet) | Section 8.4 | | Quarterly | Record compressor oil level. Should be mid-sight glass. | Section 5.2 | | Bi-annually | Clean condenser coils with non-acidic cleaner. Inspect fan blades for cracks. | Section 9.1 | | Annually | Change oil and filter. Analyze oil for acid content. Replace core filter driers. | Section 10 | Test the capacity control solenoid valves for electrical
This is the most frequently referenced section. It outlines:
Since McQuay is now part of , the original ALS service manual (OMM 1130, IM 735, or specific revision) is available via: