Trane QFNA-IOM-1 - Manual (Page 21)

Establishing A Schedule
Establishing a regular schedule for
inspecting and performing
maintenance procedures.
Acceptable schedules will vary
depending upon the type of
application and local conditions.
Consult the “Trouble Shooting”
section if problems are
encountered.
V-Belt Drive
V-Belt Drives should be inspected
or periodically for alignment,
tension, and belt wear. Belts must
be tight enough to avoid squeal
and on slippage during operation.
Slight squeal at start-up is normal.
Overtension of the belts will cause
fan and motor bearing wear and
shorten the life of the belt. When
belts are replaced, a matched set
(type and dimension) should be
used.
Sheaves and belts should be
cleaned with a dry cloth. Oil and
grease must be kept away from
belts and sheaves because they
will cause deterioration and
slippage of the belts. Use of belt
dressing is not recommended.
Variable Inlet Vanes
Inspect inlet vanes for freedom of
operation and wear. Clean with a
dry cloth as conditions require.
These vanes have sleeve type
bearings which do not require
lubrication.
Isolation Base
Inspect the base for freedom of
movement and the bolts for
tightness. Springs should be
inspected for cracks and fatigue
and replaced if necessary. Rubber
isolation should be checked for
deterioration. Keep oil, grease,
chemicals and dirt away from
isolators.
Wheel and Housing
All bolts and setscrews on the
entire fan should be checked for
tightness. Retighten according to
Tables 4, 5, 10, 11 and 13.
Any dirt accumulation on the
wheel or in the housing should be
removed to prevent imbalance.
Especially inspect for any
accumulations the inlet cone. The
paint on fans and accessories
should be touched up occasionally
to prevent deterioration of the
metal. This is particularly
important on units having special
coatings.
Caution:
Whenever the operating
conditions of the fan are to be
changed, (speed, pressure,
temperature, etc.) The Trane
Company must be consulted to
determine whether or not the
unit can be operated safely at
the new conditions.
Scheduled Preventive
Maintenance Services
The recommended schedule may
vary with climate and equipment
use conditions. Inlet vanes, for
example, may need to be cleaned
more often in a dusty
environment. Make schedule
adjustments accordingly. An
example of a Scheduled
Maintenance for Q Fan and Super
Q II Fan is shown in Table 9.
Note: For any conditions not
covered in this table, consult The
Trane Company.
QFNA-IOM-1 21
Maintenance