Maintenance Plan – VN/93

The routine maintenance schedule has to be followed as described below. Valid for gas operation with TPS turbo charger, stationary power plant application and marine engines. NOTE: All maintenance steps should be performed while engine is stopped!

	What to do:	Interval:	Part kit to be used:
Procedure 1	Check the negative pressure with u-tube manometer or digital manometer. Adjust if necessary! Setting level is 60,00 mmH2O! Replace the sintered bronze air filter/fresh air filter (Part no.: 10042-365197) in the measuring head. Clean the fresh air bores in the measuring head. Use the cleaning needle (Part no.: 151482). Clean both infrared sensor glasses in the measuring head with cotton pins and technical alcohol. Perform functional test with test glass kit.	Every 3 months or 2 000 engine running hours. (whatever comes first)	Maintenance kit – Part no.:151490 Cleaning kit – Part no.: 151482 U-tube gauge kit – Part no.: 270532 Test glass kit – Part no.: 11072-270453
Procedure 2	Replace filter in pressure regulator. If you have a water separator: Replace filter cartridge of water separator (Part no.: 273119).	Every 6 months or 4 000 engine running hours. (whatever comes first)	Filter for pressure regulator (old type) – Part no.: 10002 Filter for new pressure regulator – Part no.: 366717 Filter cartridge – Part no.: 273119
Procedure 3	Replace complete service kit on OMD. Clean the inside & outside of base plate. Check performance of pressure regulator- replace parts if necessary! Clean suction pipes/ pipe system and siphon blocks with compressed air! Check scavenging air outlet behind the control cover manually (low-right) by feeling the air stream.	Every 12 months or 8 000 engine running hours. (whatever comes first)	Maintenance kit VN115/93 – Part no.: 100153-151489 Maintenance kit VN116/93 – Part no.: 100154-151487 Maintenance kit VN215/93 – Part no.: 100155-151488
Procedure 4 This procedure is to be carried out by authorized service personnel only!	Replace complete oil mist detector or measuring head with an exchange unit – if necessary! (to be decided by authorized service personnel only!) Replace complete service kit on OMD. Clean the inside & outside of base plate. System to be modified and upgraded if necessary! Check performance of pressure regulator- replace parts if necessary! Clean suction pipes/ pipe system and siphon blocks with compressed air! Entire oil mist detector installation to be checked and tested.	Every 48 months or 32 000 engine running hours. (whatever comes first)	Maintenance kit VN115/93 – Part no.: 100153-151489 & exchange unit! Maintenance kit VN116/93 – Part no.: 100154-151487 & exchange unit! Maintenance kit VN215/93 – Part no.: 100155-151488 & exchange unit!