Maintenance Schedule - Bosch ACS 653 Repair Instruction

Introduction
MAINTENANCE TASK
Change filter
Change vacuum pump oil
Check casters and wheels for ease of
operation
Check internal scale calibration
Setting to zero of the oil drain scale
Check machine for leaks
Air flow calibration (for R1234yf only)
Clean air intake panels
Clean cabinet and control panel
Inspect power cord and hoses for cuts
and abrasions
Lubricate wheel bearings and brake
components
Solenoid valves inspection
Check the internal refrigerant identifier
filter (for ACS 663-RI only)
Change filter and sample hose of the
internal refrigerant identifier
(for ACS 663-RI only)
Due to normal wear and tear, these units require regular maintenance to ensure safe operation
and optimum performance. The above chart provides a schedule of the minimum recommended
maintenance tasks.
SP00D00624 2021-04-08

MAINTENANCE SCHEDULE

ACS 653, ACS 663 Service Manual
RECOMMENDED INTERVAL
After (SEE TABLE) of refrigerant has been
filtered. Refer to "Filter Change" in the
Maintenance section of this manual.
Model Replacement filter at:
R134a 68 kg (alert 56 kg)
Model Replacement filter at:
R1234yf 150 kg (alert 138 kg)
When the filter is replaced or every 100 hours.
Refer to "Vacuum Pump Maintenance" in the
Maintenance section of this manual.
Monthly.
Monthly. Refer to "Calibration Check" in the
Maintenance section of this manual. Every year
all scales must be calibrated by an authorized
service center.
Whenever it is necessary. Refer to "Scales Reset"
in the Maintenance section of this manual.
Automatic every 10 days. Refer to "Pressure
Decay Leak Test" in the Maintenance section
of this manual (for R1234yf only).
Every yearly — performed by an authorized
service center (for R134a only).
Monthly.
Monthly. Use a clean cloth.
Monthly. Use a clean cloth.
Daily.
Monthly.
Every yearly — performed by an authorized
service center.
Daily.
Every six months or whenever it is dirty and / or
clogged. Replace the sample hose assembly
during every filter change. Refer to "Refrigerant
Identifier Maintenance" in the Maintenance
section of this manual.
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Robert Bosch GmbH