Trane Arctic Thermafit AXM, Инструкция по установке, эксплуатации и обслуживанию

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48 ARTC-SVX006A-EN
Table 10. Recommended heat pump service intervals
Task
Frequency
Visually inspect the heat pump Daily
Log pressure and temperatures Daily
Inspect touchscreen interface panel for alarm history Weekly
Clean strainers on the inlet water pipe Monthly
Check the compressor oil level sight glass Monthly
Confirm the glycol concentration Monthly
Confirm the refrigeration pressures Monthly
Check the refrigeration liquid line sight glass Monthly
Inspect refrigerant pressures and temperature set points Quarterly
Inspect superheat (10 °F to 12 °F [5°C to 6°C]) and sub-cooling temperatures (10°F to 15°F [5°C to 8°C]) Quarterly
Inspect the load heat exchanger entering and leaving evaporator temperature Quarterly
Collect water/glycol mixture sample for analysis Quarterly
Inspect crankcase heaters Quarterly
Inspect piping for signs of leaks Quarterly
Inspect refrigerant piping for oil or refrigerant leaks Quarterly
Observe refrigeration operating pressures Quarterly
Confirm motor amperage draw and voltage Quarterly
Confirm heat pump superheat and sub-cooling Quarterly
Check for worn or burned contactors Quarterly
Inspect all electrical connections and fuses Annually
Inspect each compressor for refrigerant pressures, overheating, oil leaks Annually
Inspect compressor terminals for pitting, corrosion, and loose connections Annually
Inspect compressor oil level Annually
Confirm and record compressor amperage draw and voltage Annually
Compare water/glycol flow against design specifications Annually
Weekly
Weekly inspection is a continuation and elaboration of daily
best practice:
• Inspect touchscreen interface panel for alarm status
and additions to the alarm history. (Do not clear alarms
as this is a very important performance record if
troubleshooting problems occur.)
• Listen for excessive vibrations or motor noise. This
usually signals a loose brace or section of piping.
• Measure all refrigerant static pressure on any idle
circuits. Record any significant changes or reductions
in pressure.
• Clean strainers weekly during initial weeks after initial
start up until water quality has been reliably
established. Thereafter, inspect and clean strainers at
least monthly .
Monthly
The monthly maintenance inspection examines many items
that generally require frequent attention. This routine event
identifies small problems early before they can become big
problems requiring serious repair and refurbishment:
1. Remove the strainer on the inlet water pipe to the heat
pump and verify that it is clean and free of debris.
2. Clean the strainer’s mesh screen by back-washing with
high water velocity. If fine particles cannot be removed
with the water stream, use a mild detergent and a non-
abrasive brush to remove them.
3. Check the compressor oil level sight glass. The oil
should always be clear and free-flowing. Any milky or
“slow rolling” effect indicates that liquid refrigerant is
making its way back into the compressor and will cause
premature compressor failure.
Maintenance Procedures