Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
132/168
008831 en 2020.10
Maintenance instructions
11. Maintenance instructions
This chapter describes:
• Dangers resulting from failure to comply with safety precautions when performing main-
tenance tasks.
• Scheduled maintenance tasks for this equipment, and how to carry them out safely.
• When these scheduled maintenance tasks should be performed.
This chapter is primarily intended for operators and service engineers.
11.1 Safety precautions
Read chapter 3. Safety precautions carefully before servicing the compressor.
11.2 Maintenance of compressor unit
Read chapter 3. Safety precautions carefully before performing any maintenance on the com-
pressor unit.
To ensure that the compressor unit operates without problems throughout a long service life, the
system of maintenance presented in the following instructions must be followed.
Daily maintenance is normally performed by operating personnel. Other maintenance and service
tasks which require the refrigeration system to be opened must be performed by competent
personnel.
Maintenance can be divided into three groups:
1. Daily maintenance
(minimum twice a week)
Daily maintenance consists of visual inspections.
• Inspect the compressor unit and check that both noise and vibrations are normal.
• To observe trends it is recommended to enter the observed operating data into the
operations log, see example in the Operating manual, Operating instructions.
Check that all operating values are within the permissible ranges. Compare them
with previous values to detect trends.
• Check the oil level in the oil separator.
• Check the refrigerant charge.
• Observe for leaks of refrigerant (smell of R717), oil or water.
• Check mechanical seal oil draining bottle.
• Check the control system for alarms/shutdowns.
2. Periodic maintenance
Motor lubrication and other routine maintenance tasks are usually based on running time.
Please refer to Table 49: Maintenance intervals.
3. Major overhaul
For major maintenance tasks such as compressor overhauls, contact your local service
provider.
To Next Page
Loading...
Need help?
General
