Sullair SRL-250 - Cleaning the Condensate Strainer; Maintenance Procedures; Replacing a Pressure Switch; Replacing the Drain Valve

SRL Service Manual
Revision 00
July 2007
Page 56 of 56
12. Maintenance Procedures
12.1 Replacing a Pressure Switch
• When removing any pressure switch (High Pressure Switch [3.3.7],
Low Pressure Switch [3.3.8] or Fan Pressure Switch [3.3.9]) use
two spanners to avoid cracking the weld on the T joint.
• Use a copper gasket to guarantee a seal.
Place the gasket inside the switch connection
with a drop of oil or grease to keep it in
position while screwing the switch onto the
valve.
12.2 Replacing the Drain Valve
• Loosen the 3 piece union.
• Unscrew the electrical connector.
• Remove the fixing nut.
• Remove the old coil and install the new one.
• Replace the fixing nut.
• Reattach the electrical connector.
• Tighten the 3 piece union.
12.3 Cleaning the Condensate Strainer
The internal strainer of the drain valve should be cleaned at
least every four to six months.
• Unscrew the cap at the bottom side of the drain valve.
• Remove the strainer.
• Clean the strainer with compressed air.
• Replace the strainer.
• Tighten the cap firmly, but do not over-tighten.