Siemens SIMOTICS GP Compact Operating Instructions page 49

Helical in-line gear units C 11, C 21 and C 31 are not equipped with service plugs for direct
oil level checks.
Bevel helical gear units A 10, A 20 and A 30 are not equipped with service plugs for direct
oil level checks in mounting positions B6 and B7 only.
For these types of gear units, refer to Annex 1 of this Manual.
Before installing, check the unit as follows:
1. Place the gear unit in the mounting position indicated for the gear unit in question in Annex 1.
Wait 10 minutes for the oil level to stabilise inside the gear unit's casing.
2. Insert a dipstick through the hole shown in drawing (S4) or (S5) and measure the distance betwe-
en the oil level and the exterior of the casing. This value must be compared with the values in
mm given in Annex 1, tables (A7) and (A8), depending on the mounting position for the gear
unit in question.
3. If the measurement gives a higher value than that prescribed, top up the oil to the correct level
as indicated in the catalogue.
For all other types of gear unit the oil level must be checked via the oil plug (spill type) using the
tool (out of scope for supply) described in Annex 1.
For the first charge and subsequent top ups, only use the recommended oils.
Installation of gear units classified under Directive 94/9/EC
•
Category 2D gear units must be installed in compliance with the provisions of standards EN
1127-1 and EN 50281-1-2. The installer must, therefore, be fully informed and trained for this
application.
•
The installation technician must be aware of the ATEX class of the installation area, as well as
the risks associated with the presence of a potentially explosive atmosphere, with particular at -
tention to explosion and fire hazards, and thereby adopt the necessary safety precautions.
•
All maintenance, assembly and disassembly work must be done outside the explosion ha -
zard area by trained personnel.
•
Check that all accessory components (cables, joints, cable glands, cooling units, etc.) comply
with the Essential Health and Safety Requirements of the ATEX directives. Handle them with
extreme care to avoid altering their characteristics.
• Remove the bolts sealing the threaded holes if provided for securing the gear unit. Do not da -
mage the coupling surfaces.
•
When assembling gear units with a torque arm, make sure that during operation, the metal
parts which move relative to each other do not come into contact. If necessary, insert non-me -
tal anti-friction elements in compliance with Directive 94/9/EC.
•
Do not connect any object with electrical resistance greater than 10
•
Install guards to prevent the hazardous accumulation of dust and liquids on the seals of the so -
lid shafts and to protect them mechanically.
•
In case of installation of the gearmotor in a vertically downward orientation, the electric motor
must be equipped with a drip cover.
•
The output shaft and any pulleys or other transmission components must be perfectly aligned.
•
Only install the gear unit in the motor execution and mounting position specified on the order.
Shaft-mounted gear units can be installed with a tolerance relative to the theoretical plane of
installation of ± 5°.
•
If the gear unit is supplied without lubricant it must be installed as such and only filled with lu -
bricant thereafter.
•
Secure the gear unit to a flat, vibration-free surface capable of bearing the torsional stresses it
produces in operation. Make sure not to deform the contact surfaces, mounting feet and/or
flanges by overtightening the bolts.
•
Use bolts of quality no lower than 8.8 for mounting the gear unit, and for heavy-duty installa -
tions use 10.9 bolts. For the tightening torque refer to table (A0). To prevent bolts from unscre -
wing, apply a thin film of Loctite 510, or equivalent, on threads of all bolts used to assemble the
gear unit onto the structure and/or to the electric motor.
•
Make sure that the radial/thrust loads and operating torques do not exceed those specified for
the unit.
•
The vent caps and oil level caps must be easy to access for inspection.
•
Clean the gear unit thoroughly after installation.
9 W to the product.
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