Installation Site Check - Trane TR200 Operating Instructions Manual

Pre-Installation
3. Ensure that panel output rating is equal to or greater than motor total full load current for full motor per-
formance.
• For multiple motor applications, add the full load current ratings of all motors.
• Motor power size and option panel must match for proper overload protection.
• If panel rating is less than motor, full motor output cannot be achieved.
4. Check motor wiring:
• Any disconnect between drive and motor should be interlocked to drive safety interlock circuit to avoid
unwanted drive trips.
• Do not connect power factor correction capacitors between drive and motor.
• Two speed motors must be wired permanently for full speed.
Y-start, Δ-run motors must be wired permanently for run.
•

Installation Site Check

• Because the option panel relies on the ambient air for cooling, it is important to observe the limitations
on ambient air temperature. Derating concerns start above 104°F (40°C) and 3300 feet (1000 m) ele-
vation above sea level.
• It is important with multiple panels to check wall strength. Make sure that the proper mounting screws
or bolts are used.
• Ensure that the wall or floor area for installation will support the weight of the unit.
• If construction work continues after the equipment is mounted, it is important to keep the interior free
from concrete dust and similar dirt. If the unit does not have power applied to it, supply a protective
covering. It is important to ensure that the components stay as clean as possible. It may be necessary
to clean the interior once construction is completed.
• Keep drawings and manuals accessible for detailed installation and operation instructions. It is impor-
tant that the manuals be available for equipment operator.
Harsh Environments
The mechanical and electrical components within the option panel can be adversely affected by the environ-
ment. The effects of contaminants in the air, either solid, liquid, or gas, are difficult to quantify and control.
Airborne Liquids
Liquids
in the air can condense in components. Water carried in the air is easily measured as relative humidity,
but other vapors are often more difficult to measure or control. Steam, oil and salt water vapor may cause
corrosion of components. In such environments, use NEMA 12 enclosures to limit the exchange of outside air
into the option enclosure. Extremely harsh environments may require a higher level of protection.
Airborne Solids
Particles
in the air may cause mechanical, electrical or thermal failure in components. A NEMA 1 enclosure
provides a reasonable degree of protection against falling particles, but it will not prevent the fan from pulling
dirty air into the enclosure. A typical indicator of excessive levels of airborne particles is dust around the fan. In
dusty environments, use NEMA 12 enclosures.
Corrosive Chemicals
In environments with high temperatures and humidity,
compounds cause corrosion to occur in components. Indications of corrosion are blackened copper or rust on
steel or oxidized aluminum. In such environments, it is recommended that the equipment be mounted in a
cabinet with fresh air ventilation and that corrosive compounds be kept away. A non-ventilated cabinet fitted
with an air conditioner as a heat exchanger may be used. Conformal coated circuit boards may be specified to
reduce the corrosive effects of a harsh environment.
12
corrosive gases
such as sulfur, nitrogen and chlorine
TR200 Option Panel Operating Instructions