ATLET A-Ergo, Service Manual

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SERVICE MANUAL A-ERGO SERVICE MANUAL A-ERGO
Hy Hydr drau aulliic s c sy yst stem em / R / Rep epai air i r in nst stru ruct ctiion ons / s / Hy Hydr drau aullic ic pu pump mp mo mottor or AL ALL L 8. 8.33 33
Tips to prolong the service-life of the motor Tips to prolong the service-life of the motor
•• Rap Rapid w id wear o ear of bru f brush shes a es and c nd comm ommuta utator tor is o is ofte ften ca n cause used by d by oil oil. Oi . Oil or g l or grea rease i se iss
burned by the sparks that develop at the burned by the sparks that develop at the brushes, which leaves a residue of abrasive brushes, which leaves a residue of abrasive
ash. If oil or grease is ash. If oil or grease is found in the motor the cause of this must be e found in the motor the cause of this must be eliminated liminated
immediately. immediately.
•• Nev Never ov er overl erload oad the m the moto otorr. Bru . Brush shes th es that hav at have bee e been int n intens ensely o ely over verhea heated e ted expa xpand nd
permanently and can fasten in the permanently and can fasten in the brush holders. brush holders.
•• The The life lifespa span of t n of the b he brus rushes hes not o not only d nly depe epends o nds on th n the lo e load, b ad, but a ut also o lso on ho n how wor w worn the n the
commutator is. The commutator should have a commutator is. The commutator should have a smooth, level, greyish-black sur- smooth, level, greyish-black sur-
face. A worn c face. A worn commutator must be machined (never use abrasive paper, a whet ommutator must be machined (never use abrasive paper, a whet
stone or file!) to a surface f stone or file!) to a surface fineness of ineness of Ra = 0.8-1.8 Ra = 0.8-1.8 µ µm and a maximum m and a maximum offset of offset of
0.03 mm (with the rotor 0.03 mm (with the rotor resting in the bearing seats). For the service-life of the resting in the bearing seats). For the service-life of the
commutator it is better to machine it a little and more often, than seldom and a lot. commutator it is better to machine it a little and more often, than seldom and a lot.
The minimum diameter of the commutator is 40.8 mm.
The minimum diameter of the commutator is 40.8 mm.
•• The m The mot otor mu or must no st not be e t be expo xposed t sed to ful o full loa l loadin ding im g immed mediat iately a ely afte fter ch r chang anging ing the the
brushes. brushes.
•• Loo Look for s k for sign igns of o s of over verhea heatin ting on th g on the win e windin dings, d gs, dark ark pat patche ches, b s, britt rittle o le or bur r burned i ned ins nsu- u-
lation, and damage to lation, and damage to the soldering on the commutator. If the motor is damaged in the soldering on the commutator. If the motor is damaged in
this way it is no l this way it is no longer serviceable. onger serviceable.
•• If po If poss ssible ible, rem , remove ove dus dust an t and dir d dirt fro t from the i m the ins nside o ide of the m f the moto otor wit r with com h compre presse ssed ai d airr..
•• A dirt A dirty co y commu mmutat tator s or shou hould al ld alway ways be c s be clea leaned w ned with ith a cle a clean cl an cloth oth moi moist stene ened wi d with th
petrol (do not use waste cotton since it sheds fibres), and carefully blown clean petrol (do not use waste cotton since it sheds fibres), and carefully blown clean
with compressed air.
with compressed air.
•• If the b If the bear earing b ing bras rass lo s looks a oks as if it a s if it are ou re out of o t of oil (i il (i.e. v .e. very ery litt little oi le oil can l can be se be seen o en on the n the
rotor washer or on the brush holder) lubricate it rotor washer or on the brush holder) lubricate it with a little bearing grease. with a little bearing grease.
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