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Sauer WP33L Maintenance Schedules

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Maintenance schedule
Sauer compressor
WP33L
WP33L_WA_01, 2009-01

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Summary of Contents for Sauer WP33L

  • Page 1 Maintenance schedule Sauer compressor WP33L WP33L_WA_01, 2009-01...
  • Page 2 Titel_33L_1.fm Edited by: ZINDEL AG – Technical Documentation, www.zindel.de...

  • Page 3: Safety During Maintenance

    Maintenance 1. Maintenance J.P. SAUER & SOHN maintenance service J.P. SAUER & SOHN customer service offers various mainte- nance services: inspections, maintenance, major overhauls, re- conditioned compressors and service contracts. Safety during maintenance Before mainte- 1. Interrupt power supply to the compressor.

  • Page 4: Maintenance Schedule

    The maintenance intervals specified in the maintenance sche- dule must be observed. Shortening the maintenance intervals is of no advantage with regard to the operating performance or ser- vice life of the Sauer compressor. Note! After the final maintenance routine, the maintenance schedule starts from the beginning.
  • Page 5 Maintenance Maintenance Schedule No. Compressor type: WP33L Beginning of this maintenance sche- Type series dule: Compressor number: after commissioning Factory no.: after last maintenance routine Date: Year of construction: Hours of operation: Date of commissioning: Interval [hours of operation] Maintenance task Maintenance set item no.
  • Page 6 Table of torques Bolt(s) Torque Cylinder head nuts, 1st and 2nd stages 38 Nm Connecting rod bolts, 1st and 2nd stages 50 Nm Checking screwed connections Check all unions and screwed connections for tightness and re- tighten if necessary. This relates to: –...

  • Page 7: Cleaning Air Filter

    Maintenance Cleaning air filter Air filter Clamp 1. Open clips and take air filter cap off. 2. Loosen clamp and take air filter off cylinder head. 3. Inspect air filter for heavy wear and tear and soiling. Note! The air filter must be replaced if cleaning is not possible or the air filter is damaged.

  • Page 8: Changing Oil

    Changing oil Note! Use oil according to the lubricant table (see Sauer oil recom- mendation or operating manual section 10). Oil filler cap Oil drain plug Dipstick 1. Run compressor for approx. 5 minutes until operating tempe- rature is reached.

  • Page 9: Checking Valves

    6. Clean all sealing surfaces. Installing valves Note! Refit all valves with new gaskets and rings only. Only use original Sauer spare parts. Fitting other gaskets may result in leaks and could cause sub- stantial damage to the compressor.
  • Page 10 Cylinder head nut Cylinder head gasket 7. Insert 1st-stage valve. 8. Remove bridging elements between the inner and outer rings on 1st-stage cylinder head gasket. Bridging element Bridging element Note! Only use both cylinder head gaskets as a set! 9. Insert new cylinder head gasket between valve and cylinder head of 1st stage.
  • Page 11 Maintenance 11. Screw on cylinder head nuts tightly. Observe tightening torque (see section 1.4). Cylinder head nut Retaining screw Cylinder head gasket 12. Install 2nd-stage valve and cylinder head. Ensure the correct installation position: the valve retaining screw must be opposite the safety valve nipple. 13.

  • Page 12: Replacing Valves

    Note! Valves are those parts of a reciprocating compressor that are subject to the most stress. In order to achieve the guaranteed maintenance routines, these valves are high-quality precision parts which have been co-ordinated especially to the individual compression stages and checked carefully for proper functioning before delivery.
  • Page 13 Maintenance Note! Replace all piston rings with new ones! The following damage may occur on removal of the piston rings: • the edges of the piston rings may be damaged on the wearing edges in the cylinder; • fine cracks which can lead to material fracture may appear if the piston rings are bent up repeatedly.
  • Page 14 6. Install valves and cylinder heads as described in section 1.8, 'Checking valves'. 1.12 Renewing flexible gear rim Note! This applies to Sauer compressors with electric motors. Renewing flexible 1. Support compressor under the coupling bell housing. gear rim 2. Remove the electric motor mounting screws.
  • Page 15 Maintenance 7. Remove support from under the coupling bell housing. Flexible gear rim Compressor Motor 8. Reinstall separated connecting lines and pipes.
  • Page 16 1.13 Cleaning condensate separators Strainer Screw plug 1. Remove screw plug. 2. Pull out strainer. 3. Check separator for obstructions. 4. Insert new strainer. 5. Screw in plug.
  • Page 17 Maintenance 1.14 Overhauling water drain valves Hexagon nut 1. Unscrew hexagon nut. 2. Carefully lift up plastic threaded part with the screwdriver. 3. Remove coil from armature. 4. Unscrew the four Allen screws. 5. Remove upper section of valve. 6. Replace following parts: conical spring, diaphragm and two O-rings.

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