JOHNSON CONTROLS
74
FORM 102.20-OM2
ISSUE DATE: 6/01/2015
SECTION 3 - MAINTENANCE
It should be noted that the AirLoop
TM
labyrinth seal
is made of a special material which was specifically
chosen to make sure it could never damage the media.
While the best seal is obtained when the above steps
are followed, if installed too close, the media will sim-
ply use the seal a little more. As the wheel turns, the
seal will automatically adjust itself to the wheel’s tol-
erance (approximately 1/32") for the smallest possible
air leakage and become a non-contact seal that will last
throughout the wheel life.
FIGURE 77 -
AIRLOOP™ LABYRINTH SEAL
ADJUSTMENT
LD17098
Check the following parts for tightness before start-up
and every six months:
•
Bearing bolts
•
Bearing set screws (two on each side of the
wheel). Torque them to 13 ft-lb for wheels up to
78 in. diameter and 24 ft-lb for wheels from 88-
120 in. diameter.
Motor Bolts
- Check the bolts securing the motor to
the base plate periodically for tightness (hand-wrench
tight) at start-up, after one month of operation, and an-
nually thereafter.
Drive Belts
- The belt is a high performance link belt
which allows installation or replacement without using
special tools. Innergy tech recommends checking the
belt after a month of operation and every three months
through a general maintenance check. The inspection
should focus on belt wear and correct tension. If im-
proper tension is noticed, simply reduce the length of
the belt by removing a few links. If the belt needs re-
placement, contact Innergy tech for a new belt (Innergy
tech will need the serial number and the size of the
wheel). The belt is directional; it must be installed with
the directional arrows pointing in the direction of the
motor rotation.
Belt is installed in six steps:
1. Ask Innergy tech for belt length. The length de-
pends on the wheel diameter.
2. If needed remove links by twisting the link tabs
sideways and pulling the surplus out of the belt.
3. Tape one end of the new belt to wheel and make it
turn by hand one complete revolution. The wheel
should turn freely if belt is removed.
4. Pull the belt tightly around the wheel and reducer
sheave.
5. To connect both free ends of the belt, hold belt
with tabs pointing outward. Place end tab through
both links at once. Flex belt further and insert
second tab through end link by twisting tab with
thumb. Ensure tab returns to position across belt.
6. Reverse belt so tabs turn to the inside of belt.
7. Pass the belt over the tensioner idler sheave. If
there is no tension in the tensioner, reduce the
length of the belt.
Inspect Wheel Drive Components
Bearings
- Wheel bearings are greased before ship-
ping, but it is recommended to grease them again be-
fore start-up. Proper care and maintenance of the wheel
bearings should allow it to last up to 20 years.
Lubrication of bearings and bearing bolts varies de-
pending on the temperature range in which the wheel
will be used. For a typical temperature range of -40°-
130°F (-40°-54°C) recommended lubrication is every
six months. A NLGI grade 2 consistency, mineral oil
lithium or lithium complex based grease is recom-
mended to be pumped into the two bearing grease
points.