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MSC4000 - MSC15000 USER GUIDE
The refrigeration pressure switches should be checked monthly to ensure that they are adjusted to
the proper settings. Please refer to the applicable electrical drawings for your unit.
Compressor Oil Level
The oil level in the compressor should be checked daily. The refrigeration system should never
need oil unless the system is leaking or has been recently repaired. If it is determined that the
system needs oil, do the following:
•
Run the dryer for a minimum of 2 minutes, if there is not a visible level of oil in the
sight glass, proceed to the next step, if there is an oil level, DO NOT add oil to the system.
•
Using the appropriate oil pump add the proper oil (POE for R134 and R404 refrigerant) using
the Schrader valve on the suction side of the compressor.
•
Add oil until there is a visible level in the sight glass with the compressor running.
Drain Solenoid
The drain solenoid should be cleaned monthly or more often if needed. Remove air flow and pres-
sure from the dryer prior to proceeding. To clean the drain solenoid:
Drain Line Y-Strainer
The drain line y-strainer should be cleaned weekly. Air flow and air pressure should be removed
from system before proceeding. To clean the Y-strainer:
•
Turn the ball valve on the strainer assembly to the closed position
•
Remove threaded cap at the end of the ball valve assembly.
•
Clean the screen inside of the cap by rinsing it under water.
•
Reinstall the screen and cap
•
Return the ball valve to the open position
