10.0 MAINTENANCE
Drain sequence for N250/300H−2S
•Remove plug from drain valve located on the bottom of the separator tank.
•Install supplied drain hose and fitting assembly in end of drain valve and place end of hose in a suitable pan.
•Open drain valve to start drainage.
•After draining is complete, close valve, remove hose an fitting assembly from valve, and store in a suitable location for future use.
•Replace plug in end of drain valve.
•Do not store drain hose in starter box after it has been used to drain the separator tank.
Coolant fill quantity 250−300 hp − 2 stage 40.0 gallons (152 liters)
COOLANT DRAIN
caution
Do not mix coolant types. Use only coolant specified by IR
•Start the compressor and check for leaks.
•Check the coolant level, refilling if necessary.
•Dispose of waste coolant in accordance with local and governmental regulations.
NOTICE
Shorter coolant drain intervals may be necessary if the compressor is operated in adverse conditions.
Food Grade Coolant option
•SSR Food Grade Coolant is a polyalphaolefin base coolant. Change after 1000 hours or every 6 months whichever comes first. Do not operate unit past this 1000 hour change interval, as coolant degradation will occur.
Coolant filter change procedure
•Loosen filter element with the correct tool.
•Remove the element from the housing.
•Place the old element in a sealed bag and dispose of in a safe way.
•Clean the mating face of the housing.
•Remove the new Ingersoll Rand replacement element from its protective package.
•Apply a small amount of coolant to the element seal.
•Screw the new element down until the seal makes contact with the housing, then hand tighten a further half turn.
•Start the compressor and check for leaks and check the coolant level.
Separator element checking procedure
With the compressor running on load, check the separator differential pressure via the Intellisys controller. It will be necessary to change the element if the differential pressure equals zero or exceeds 1 bar
(12 psig).
Separator element change procedure
•Remove all the capscrews securing the cover to the tank except the screw opposite the pivot bolt which should be left engaged by 2−3 threads with at least 6.5mm (0.25”) clearance from the screw head to the lid. Rotate the jacking bolt clockwise until the cover lifts off the tank at least 2mm (0.08”) all the way around the tank. The cover can now be rotated to allow access to inside the tank.
•Carefully lift out the element spacer and retain for reassembly. Do not damage the flat surfaces of the spacer as this may cause higher oil carryover or leaks. A hoist is available for 175HP (90kW) machines and above if required.
•Carefully withdraw the used element, place it in a sealed bag and dispose of it safely.
•Remove the O−rings from the top of the tank, the separator element sealing face and the scavenge tube sealing face.
•Clean the surfaces on both the tank and the cover.
•Install new O−rings
•Install replacement element remembering to fit the small O−ring on the scavenge tube and positioning the tube into the matching hole in the Separator Tank
•Re−fit the separator element spacer with the notch over the scavenge tube.
•Rotate the tank cover back into position taking care not to damage the O−ring, and locate the cover using 2 capscrews but do not tighten down.
84IRN37 - 160K - CC & IRN50 - 200H
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