© MAHLE
Maintenance | ACX1281 | 27
ACX1281 | 27
| 27
en
8. Maintenance
8.1
Maintenance interval
Description
Period
Calibration of scales
1 x per year
Vacuum pump oil replacement
and system leak test
After 60 hours of service
Inline filter replacement
Refer to filter drier
Combo filter replacement and system
leak test
After 150kg of refrigerant
processed
System leak test
As required
White sample filter of refrigerant
identification unit
As soon as red spots begin to
appear on any portion of the
white element
m
Never perform any maintenance work which is not expressly
recommended in this Section.
m
Contact customer service if components have to be replaced
other than in the course of maintenance work.
8.2
Maintenance protocol
t
The ACX1281 stores various protocols which can be printed
out.
—
Last 3 system service reports.
—
Self-test report
—
Refrigerant report
—
Error report
—
Operating hour meter
1.
Select "
Maintenance
>>
Service report
".
2.
Select protocol with
and
.
3.
Print protocol.
8.3
Calibration of scales
8.3.1 Calibrating internal refrigerant bottle
t
The internal refrigerant bottle is calibrated at the factory.
1.
Select "
Maintenance
>>
Maintenance
>>
Calibration
>>
Scale calibration
".
2.
Enter the password "227".
3.
Select the scale.
4.
Select
O
.
5.
Enter the weight.
6.
Attach the calibrating weight.
7.
Select
O
.
Calibration completed.
8.
Select
O
.
9.
Remove the calibrating weight.
8.3.2 Calibrating used oil bottle
1.
Select "
Maintenance
>>
Maintenance
>>
Calibration
>>
Scale calibration
".
2.
Enter the password "227".
3.
Select the used oil scale.
4.
Remove the bottle.
5.
Select
O
.
6.
Attach the calibrating weight to the scale selected.
7.
Enter the weight.
8.
Select
O
.
Calibration completed.
8.4
Calibration check
t
Only internal refrigerant bottle.
1.
Select "
Maintenance
>>
Maintenance
>>
Calibration
>>
Calibration check
".
2.
Select the scale.
3.
Attach the calibration check ball.
4.
Select
O
.
Calibration check completed.
t
Getting message "calibration check failed", calibration check
should be performed again and if it still fails a second time,
a calibration of the internal refrigerant bottle scale should be
performed.
8.5
Taring of Scales
t
Only used oil bottle scale.
1.
Select "
Maintenance
>>
Maintenance
>>
Calibration
>>
Tare Reset
".
2.
Select the scale.
3.
Attach an empty bottle.
4.
Select
O
.
Tare reset completed.
Summary of Contents for ACX1281
Page 1: ...MAHLE ACX1281 EN Operation manual A C Service Units...
Page 33: ...MAHLE Notes 33 en 12 Notes...
Page 34: ...MAHLE 34 ACX1281 Notes en...
Page 35: ...MAHLE Notes 35 en...
