44SEG Operating Instructions6 Maintenance6 Maintenance6.1 Overview of maintenance 6.2 Tools requiredStandard workshop equipment is adequate for workingon the pull-rope emergency stop switch. At the very leastyou will require the following tools for maintenance:• Set of screwdrivers (slot / Phillips)• Open-end wrench for screw connection M25• Suitable torque wrench (Section 4.2: „Electrical con-nection“, page 24 and Section 4.3: „Tighteningtorques“, page 26)interval Component MeasureMonthly 11. It may be necessary to reduce the interval depending on theoperating or local conditions (e. g. greater quantities of dirt,weather conditions).Pull-rope emer-gency stop switchVisual inspection (seeSection 6.3, page 45)Cleaning the devicefrom the outside (seeSection 6.4, page 47)Annual Pull-rope emer-gency stop switchFunctional test (seeSection 6.5, page 50)Every 3 years Pressure equaliza-tion element (15) 22. Optional fittingsReplacing the pressureequalization element(see Section 7.6, page61)Every20 yearsPull-rope emer-gency stop switchReplace pull-ropeemergency stop switch(see Chapter 5: „Mount-ing and dismounting",page 31)Fig. 6-1: Installation position of the pressure equalization el-ement102111514