22
Measurement points
5471970 GB - Subject to technical changes!!
Temperature sensor t_oL1: air-side temperature at
the inlet of the evaporator.
Temperature sensor t_oL2: air-side temperature at
the outlet of the evaporator.
Â
Attach temperature sensor t_oL1 in the middle
of the air inlet at the level of the refrigeration cell
ceiling as per the diagram.
Â
Attach temperature sensor t_oL2 in the middle of
the air outlet as per the diagram.
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Carry out the measurement.
18.3 Positioning temperature sensors
for measurements during servicing
L
The measurement points serve to determine
temperatures during servicing (Cf. „Tubing and
instrument flow chart without EVI1“ auf Seite 18
and „Tubing and instrument flow chart with EVI1“ auf
Seite 20).
L
Only use calibrated temperature sensors for
measurement.
Â
30
°
1
2
3
If present, remove insulating material
3
at the
measurement point.
Â
Place and attach suitable temperature sensor
1
on refrigerant tubing
2.
Temperature sensor must
lie completely flat
Â
Insulate measurement point with insulating
material (min. 5 mm) before measurement.
Â
Carry out the measurement.
Â
After measurement, remove temperature sensors
and insulate measurement point appropriately.
18 Measurement points
18.1 Measuring air-side temperatures
on the condenser
10cm
10
cm
10cm
10
cm
t_cL1_A
t_cL1_B
Diagram shows the frontal view of the ceiling unit with
the corresponding locations for determining the air
inlet temperature in front of the condenser (t_cL1). An
arithmetic mean value t_cL1 is calculated from both
measured values t_cL1_A and t_cL1_B.
Measuring air-side in front of the condenser:
Â
Attach temperature sensors t_cL1_A and t_cL1_B
according to the diagram 1 cm above the surface
of the covering panel.
Â
Carry out the measurement.
Measuring air-side on the other side of the
condenser:
Â
Remove covering panels, see section „12 Demon-
tage“ on page 12.
Â
Attach temperature sensor t_cL2 at a distance of
5cm from fan (on the discharge side) and axially
aligned with the fan hub.
Â
Assemble the covering panels.
Â
Carry out the measurement.
18.2 Measuring air-side temperatures
on the evaporator
t_oL2
t _oL1
The diagram shows the rectangular air inlet on the
evaporator (bottom of the ceiling unit).
