Parallel Compressor Systems
Suction Filter
Replaceable core suction filters are supplied as standard on all units. The flanged shell holds replaceable pleated filter elements suitable for installation in the suction line of refrigeration systems. In this way any contaminants left in the system at
CompressorMotorBurnoutCleanupProcedure
Another benefit of the suction filter is its use in cleanup of a system after a burnout. Standard liquid cores can be installed in the shell to aid in the cleanup of acids and other contaminants from a motor burnout.
The following procedure can be used in case of a motor burnout.
1.Determine the extent of the burnout. For mild burnout’s where contamination has not spread through the system, it may be economical to save the refrigerant. Normally it is economical to save the refrigeration charge if the system has service valves. A severe burnout exists if the oil is discolored, an acid odor is present and contamination products are found in the high and low side. With this condition, extreme caution should be exercised to avoid breathing the acid vapors and to prevent contaminated liquid from making contact with the skin.
2.Thoroughly clean and replace all system controls, such as expansion valves, solenoids, check valves, reversing valves, oil separators, suction accumulators, etc. Remove all strainers and
3.Install a replacement compressor and make a complete electrical check.
4.Make sure the suction line adjacent to the compressor is clean. Install a liquid line
5.Install a burnout core in the liquid line shell.
6.If the refrigerant is removed from the system, follow the evacuation procedure found on page 17 of this manual.
7.Start the compressor and put the system in operation. Record the pressure drop across the suction line filter and keep for reference.
8.Replace the suction line
9.Observe the system during the first 4 hours. Repeat step 8 as often as required, until no further change in pressure drop is observed.
10.After the system has been in operation for 48 hours, check the condition of the oil for Acids. If the oil test indicates an acid condition, replace the liquid and suction line filter- driers.
11.Check the system again after approximately 2 weeks of operation. If the oil is still discolored, or checks acid, replace the liquid and suction line
12.Cleanup is complete when the oil is clean, odor free, and is determined to be acceptable by testing for acids or other contaminants.
13.Replace the suction line
For more detailed information on burnout cleanup procedures and recommendations, consult the RSES Service Manual, section 91.
Sporlan Valve Company
Replaceable Suction Filter
The correct replacement suction filter element in Sporlan Valve replaceable shells is Sporlan part number
Parallel Compressor Systems Installation & Operations Manual, October 2004 | 29 |
