Digga PD 30 HP-7, Operator'S Manual

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9 OPERATING INSTRUCTIONS - COLD WEATHER STARTUP
The information that is contained on this page is an aid to the operation and maintenance of your Digga High Powered Planetary Drive
Unit in cold weather. When you operate the host machine in temperatures from 9 °C (48 °F) to −40 °C (−40 °F) refer to the Operation
and Maintenance Manual of your machine. It is difficult to outline the operation and maintenance of a machine that is used in freezing
temperatures for a general publication. The difficulty in outlining the requirements is caused by the following conditions:
• The unlimited differences in weather conditions
• Applications
• And the supplies that are available in your area
In order to provide the best possible guidelines, use the information in this document and the following criteria:
varying factors, recommendations from your Machinery dealer, and past proven practices.
HINTS FOR COLD WEATHER
Make sure that you read the information for selecting the correct gearbox oils for use in cold weather. Refer to page 33 for detail.
Prepare the machine for the weather conditions as instructed In your machines operator manuals.
PROCEDURE FOR STARTUP IN COLD WEATHER
• Your Digga Planetary Drive System is designed to operate within air temperature of 5 °C (41°F) and 30°C (86°F).
• For temperatures below 5°C (48°F) it is recommended to slowly start the drive under no load, at minimum speed. This will allow
warm hydraulic oil from your host machine to circulate through the hydraulic motor of your drive and slowly bring it to the minimum
recommended operating temperature of 5°C (48°F).
• Once the minimum temperature has been achieved it is recommended to slowly introduce load to the output of the drive unit, which in
turn will increase the internal gear oil temperature.
N.B. The host machines cooling system and the lubrication system for the engine do not lose heat immediately upon shutdown.The
transmission and the hydraulic system lose heat more rapidly because of more exposed areas. The Planetary Gearbox & Motor cases cool
rapidly, since the cases do not operate as warm as other compartments. Therefore, after any period of down time on the machine, ensure
you achieve full operating temperatures through following start up instructions. Thick oil can also cause high case pressures which in turn
cause shaft seal problems.
COLD WEATHER STARTUP INFORMATION