Servicing The Roller Bearings; Servicing The Water-Jacket Cooling; Servicing And Maintaining The Anti-Condensation Heating; Regreasing Intervals And Types Of Grease For Operating Roller Bearings - Siemens SIMOTICS TN N-compact 1LH8 Operating Instructions & Installation Instructions

Checking the cooling system
● With the machine stopped, check the condition of the cooling system:
9.1.6

Servicing the roller bearings

When inspecting rolling-contact bearings, it is generally not necessary to dismantle the
machines. The motor only has to be dismantled if the bearings are to be replaced.
9.1.7

Servicing the water-jacket cooling

● During each inspection, check whether a pool of water has collected under the machine.
● Check any leakage water electrodes. Contact your Service Center (Page 129), if
9.1.8

Servicing and maintaining the anti-condensation heating

The anti-condensation heating is maintenance-free. If it is defective, contact the
Service Center (Page 129).
9.1.9

Regreasing intervals and types of grease for operating roller bearings

The specified grease data applies to the data specified on the rating plate and for high-quality
grease in accordance with the specifications in these operating instructions. Because these
greases exceed significantly the requirements according to DIN 51825 and ISO 6743‑9, they
permit the specified relubrication intervals.
Initial lubrication
The grease specified on the lubricant plate is selected according to the operating conditions
known at the time of ordering and should be used for initial lubrication.
Grease selection criteria
High quality ISO‑L‑X BDEA3 lubricating grease according to ISO 6743-9 and K3K‑20
lubricating grease according to DIN 51825 with lithium soap as a thickener and an upper
service temperature of at least +130° C / +266° F are permissible for standard applications
without special requirements.
When selecting the lubricating grease, ensure that the technical data of the grease is suitable
for the application.
SIMOTICS TN Series N-compact 1LH8
Operating Instructions 06/2017
– The cooling system is in good condition.
– The pressure drop between entry and exit has not increased appreciably.
Identify the cause: This can be condensation or a leak in the cooling system.
necessary.
Maintenance
9.1 Inspection and maintenance
97