GEA Grasso V Series Installation And Maintenance Instructions Manual

2.2.1 Check list periodical inspectionCheck list periodical inspectionCHECK POINTS *5 FREQUENCY REMARKSdailyweeklymonthlyOil level in crankcase •Between 25% and 75% height of the sightglass. For topping up oil, refer toSection 2.4.1, Page 33.Colour of the oil •The oil should be transparently clear. Adisappearing white colour points todissolved refrigerant.Lubricating oil pressuredifference •Min. control oil pressure •Oil temperature max. • Refer to the "Product Information"Oil leakage of shaft sealmax. • In case of more than 1 cc/hr contactsupplier.Suction pressure • Check against design conditions. Refer toplant manual.Discharge pressure •Refer to plant manual. For the max.allowable discharge pressure refer to thetechnical data of compressor.Suction superheatIntermediate superheat • ≥0 K (NH3)Discharge temperaturemax. • 170 °C.Oil temperature min. •During compressor standstill the lower partof the crankcase must remain warmer thanthe surroundings: ≥ 20 °C (NH3)Condition of V-belts •Check belts for:1) Wear (fraying, cuts etc.) and ensure thatthey do not touch the groove bottom.2) Tension. Too low a tension gives rise toexcessive flapping or oscillation inoperation. For correct tension consultGrasso instruction 0087516Adjustment andoperation of pressuresafety switches• Refer also to instructions of switchmanufacturer.Capacity control (ifprovided) •Switching frequency ofthe compressor •Number of operatinghours •Check the number of operating hours inview of any maintenance operations to becarried out.2.3 STEPS FOR LONGER SHUT-DOWN PERIODS (> 6 months)5 During the first 50 operating hours the compressor should be checked regularly for all the pointsmentioned above, at least twice every 24 hours and more frequently in cases where irregularities arefound.INSPECTION AND TROUBLE SHOOTINGSTEPS FOR LONGER SHUT-DOWN PERIODS (> 6 months)0089288gbr_1132 30.10.2017