Trane Optimus RTHD, Инструкция по установке, эксплуатации и обслуживанию

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Installation Electrical
RTHD-SVX01K-EN 43
1. Attach the handle and gasket to the enclosure door and
secure with the four bolts, lock washers and nut as
shown in
Figure 20. Tighten to 75 in-Lbs.
Note: There is an additional Lexan spacer on the handle,
not shown in the
Figure 20. Do not remove.
2. Check that when the enclosure door is closed, the
handle interlocks with the shaft in all handle positions
except RESET/OPEN. To open the enclosure door
when the breaker is in the ON position, rotate the screw
slot on the handle plate counter -clockwise. Verify
operation.
Important: WHEN EVACUATING THE CHILLER’S
REFRIGERANT SYSTEM, ALWAYS HAVE
THE MAIN POWER DISCONNECT/CIRCUIT
BREAKER OPENED.
Even when the compressor is not running,
voltage is present at the compressor motor
terminals, providing the potential for
current to flow through a low impedance
path.
As the chiller is evacuated below atmospheric pressure,
the dielectric strength (resistance to arcing) of the gaseous
atmosphere is significantly reduced. Because the SCRs are
connected “inside the delta,” three of the motor terminals
are connected directly to the line voltage. An “arc over”
can occur between motor terminals under conditions seen
in the evacuation process. If this occurs the circuit breaker
(or other external protective devices) will trip in response
to high fault currents, and motor damage may also occur.
To avoid motor damage, verify chiller
fully disconnected
from all power sources before beginning pumpdown or
evacuation procedures
, and use proper lockout/tagout
procedures to make sure the disconnect cannot be
accidentally closed while the chiller is in a vacuum.
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with a CAT III or IV voltmeter rated
per NFPA 70E that all capacitors have discharged.
Figure 20. Handle on door
1/4” Lockwasher (4)
Gasket
Lock
Plate
1/4-20 Hex Nut (4)
Cut Away of
Enclosure Door
Handle Plate
Sealing Washer (4)
(Used with 4 & 4X
Enclosures Only)
1/4-20 x 1 Square Neck Bolt (4)
Handle
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with a CAT III or IV voltmeter rated
per NFPA 70E that all capacitors have discharged.
NOTICE
Equipment Damage!
When removing refrigerant for the chiller, both the
condenser and chilled water pump must be operating
to avoid freeze up.
NOTICE
Motor Damage!
Fully disconnect all power sources before pumpdown
or evacuation procedures and ensure disconnects
cannot be closed while chiller is in a vacuum. Failure to
do so could cause motor damage.