Emerson SZV22 Air Compressor User Manual


 
27 2008SSD-34 (5/08)
Dual-Compressor Module Troubleshooting
5.2 Platform Symptoms Diagnosis
Use the following guidelines to troubleshoot operating problems.
Table 9 Platform troubleshooting guidelines
Problem
Recommended Actions
Low Gas
Flow
Low inlet pressure
• Insuf cient gas supply
• High temperature
Bypass valve open
Low Compressor speed
Restricted inlet screen
High Oil
Carryover
Saturated or dirty secondstage oil separator
High oil level
Restricted scavenge ori ce
• Insuf cient back pressure
• Oil dilution
Compressors
Won’t Run
Determine drive status.
Is inhibit circuit closed?
Is run signal present?
Does the VFD indicate a fault code?
Incorrect
Compressor
Speed
Low inlet pressure
High discharge pressure
High temperature, fan, low oil, oil cooler
Problem with speed control sensor and related components
High
Temperature
Low oil level
• Restricted oil lter
Blocked oil cooler air ow
Oil cooler fan not operating
Operation conditions outside of Compressor Module speci cations