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Supplemental Instructions For the Installation, Operation and Maintenance of
ATEX Approved Torque-Arm II Shaft Mount Reducers (Zone 1)
PREFACE
The products described in this manual are manufactured by Baldor Electric Company, Fort Smith, AR USA.
This manual is intended to provide basic information on the safe operation and maintenance of ATEX approved Torque-Arm II shaft
mount reducers. These instructions do not cover all details or variations in equipment nor provide every possible contingency or
hazard to be met in connection with installation, operation, and maintenance. Should further information be desired or should
particular problems arise which are not covered in the manual, the matter should be referred to your local Baldor Electric Company
representative.
The reducer was manufactured under the guidelines of the ATEX directive 94/9/EC.
Torque-Arm II reducers are suitable for ATEX Category 2 and M2, Group II and I, for gas and dust environments and are also suitable
for ATEX Category 3 for all gas or dust environments with ignition temperatures higher than T4 - 135°C.
Typical reducer marking is contained on a certification plate similar to the following:
PART
NUMBER
CLASS I
RATING
Tamb -30°C to +50°C
I M2 ck / II 2 GD ck T4
SIRA 04 ATEX 9360
MFG. BY BALDOR ELEC CO/FT SMITH, AR 72901 USA
ATTENTION - HAZARDOUS AREA USE
For Hazardous Area Use the following potential ignition hazards have been identified:
Impact to outer enclosure
Heat generation
Contact of rotating parts with stationery parts
The installation should be in accordance with the conditions in the following sections.
The reducer is designed to operate with a surface temperature at or below 200°F. Failure to operate the reducer properly can cause
this maximum surface temperature to be exceeded. If applied in a Division 1 or Zone 1 environment this excessive temperature may
cause ignition of hazardous materials.
The use of supplemental cooling devices such as a shaft-mounted cooling fan or heat exchanger may be required to ensure
operating temperature below 200°F if indicated by catalog selection tables or if the reducer is operated at ambient temperatures
above 80°F. Proper use of supplemental cooling, if provided, and avoidance of undesirable operating conditions is required.
ABNORMAL CONDITIONS
Operating the reducer under any of the following conditions can cause higher than normal operating temperatures:
reducer load exceeding nameplate ratings
ambient temperatures above nameplate rating
inadequate cooling
operation above maximum nameplate speed
insufficient amount or improper type of lubricant
ADDITIONAL INSTRUCTIONS FOR SAFE INSTALLATION AND USE
•
Do not open reducer when an explosive atmosphere may be present.
•
All rotating parts should be guarded to prevent contact with foreign objects which could result in sparks and ignition.
•
The reducer should be periodically inspected for proper oil level, signs of oil leakage, and dust or dirt buildup that would impede
heat dissipation.
•
Follow lubrication instructions and service schedule in this manual. Use gear lubricant with flash point temperature 300°F or
higher.
•
Increasing levels of vibration and noise could indicate the need for repair or replacement of the reducer, including replacement
of bearings.
•
Electrical sparks are a source of ignition. To reduce this risk, proper electrical bonding and grounding are recommended. Under
standard operating conditions, the reducer is electrically bonded to the driven equipment through the output shaft connection.
Sizes TA0107 – TA12608
TORQUE-ARM II SPEED REDUCER
R
MAX
HP AT
INPUT RPM
WARNING
Do not open when
an explosive atmosphere
may be present
OIL QTY
POS. B
USA PATENTS
6,272,941
5,667,333
6,375,196
5,951,198
RATIO
6,202,507
6,527,276
6,253,640
SERVICE PER INSTRUCTION
MANUAL
S000001
29
U.S.
QTS
6,530,138
6,599,052
E
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