Trane DFIA, Установка, эксплуатация и обслуживание

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78 Direct-Fired Make-up Air • MUA-SVX01A-EN
Trouble Shooting
WARNINGS
Hazardous Service
Procedures!
The maintenance and troubleshooting procedures recommended
in this section of the manual could result in exposure to electrical,
mechanical or other potential safety hazards. Always refer to the
safety warnings provided throughout this manual concerning these
procedures. When possible, disconnect all electrical power
including remote disconnect and discharge all energy storing
devices such as capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be inadvertently
energized. When necessary to work with live electrical
components, have a qualified licensed electrician or other
individual who has been trained in handling live electrical
components perform these tasks. Failure to follow all of the
recommended safety warnings provided, could result in death or
serious injury
.
The equipment has been electrically and fire tested prior to shipment. However,
during transit, control setpoint can change, and wiring can come loose. Do not
assume controls are defective until all associated setpoints and wiring are
checked. The following is a simplified list of possible problems and typical causes
and remedies. However, it does not cover all possibilities, and is intended as a
guide only. The AdaptAire™ Digital Control System user manual should be
referenced as a troubleshooting guide for the DDC portion of the system.
Table 16. Trouble shooting guide for systems with pilot
Symptom Probable Cause Solution
1. If blower does not operate. Low or no voltage. a. Check power source.
Fuses blown. a. Check and replace.
Customer interlock not closed
or connected. a. Close or connect customer
interlock.
Fan OFF-ON switch in OFF
position. a. Switch to ON position.
Time clock, night setback
thermostat, or field installed
controls open. a. Check time clock, night
setback thermostat and field
installed controls for proper
setting.
Freeze protection tripped. a. Reset freeze stat by
interrupting power. Check for
proper setting and burner
operation.
Damper motor not operating,
or its end switch not making. a. Check for power at damper
motor and that the end switch
has been wired correctly to the
contact (normally open). Check
that the linkage is clear and not
binding.
Overload protection on motor
start tripped. a. Push reset button on the
starter and check amps.
Belts loose or broken. a. Turn power off and check the
belts.
Bearings seized. a. Check and replace.