Unit Test Sheet - Trane CXAO Installation Operation & Maintenance

Unit test sheet

7.5 Unit test sheet
It is advisable to periodically detect the following
operating data to verify the correct functionality of
the unit in time. These data will also be of great benefi t
to the technicians who carry out routine and / or
extraordinary maintenance.
Water side measurements
Chilled water setpoint °C _________
Evaporator outgoing water temperature °C _________
Evaporator ingoing water temperature °C _________
Evaporator pressure drop kPa _________
Evaporator water fl ow rate m
Refrigerant side measurements
Circuit #1:
Compressor Load _____ %
N°of active Fans _____
N°of expansion valve cycles (electronic only) _____
Refrigerant/ Oils pressure
Evaporation pressure _____ Bar
Condensation pressure _____ Bar
Oil pressure _____ Bar
Refrigerant temperature Saturated evaporation
temperature _____ °C
Intake gas pressure _____ °C
Intake overheating _____ °C
Saturated condensation temperature _____ °C
Delivery overheating _____ °C
Liquid temperature _____ °C
Undercooling _____ °C
Circuit #2
Compressor Load _____ %
N°of active Fans _____
N°of expansion valve cycles (electronic only) _____
Refrigerant/ Oils pressure
Evaporation pressure _____ Bar
Condensation pressure _____ Bar
Oil pressure _____ Bar
Refrigerant temperature Saturated evaporation
temperature _____ °C
Intake gas pressure _____ °C
Intake overheating _____ °C
Saturated condensation temperature _____ °C
Delivery overheating _____ °C
Liquid temperature _____ °C
Undercooling _____ °C
External air temperature
52
3
/h _________
Electrical measurements
Analysis of the unit's voltage unbalance:
RS
Phases:
_____ V
Unbalanced
Unbalance %: ((V max - V average) / V average) x 100 =
_______%
Compressors current – Phases:
Compressor #1
Compressor #2
Fans Current i:
ST
_____ V _____ V
R S
_____ A _____ A _____ A
_____ A _____ A _____ A
#1 _____ A #2 _____ A
#3 _____ A #4 _____ A
#5 _____ A #6 _____ A
#7 _____ A #8 _____ A
RF-SVX003A-GB
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