QT/QTS Series
Quincy Compressor
2022208700, September 2018
9
Excessive noise can be effectively reduced through various meth ods. Total
enclosures, intake silencers, baffle walls, relocating or iso lating the compressor
can reduce noise levels. Care must be taken when constructing total enclosures
or baffle walls. If not properly constructed or positioned, they could contribute to
unacceptable noise levels or over heating. Consult your local Quincy distributor
if assis tance is required.
Unusual noise or vibration indicates a problem. Do not operate the
compressor until the source has been identified and corrected.
Electrical Supply Requirements
The electrical installation of this unit must be performed by a qualified
electrician in accordance with the National Electrical Code (NEC) or the
Canadian Electrical Code (CEC), the National Electrical Safety Code (NESC),
OSHA and/or state and local codes. Failure to abide by the national, state and
local codes may result in physical harm and/or property damage.
Before installation, the electrical supply must be checked for adequate
wire size and transformer capacity. Verify that the electrical supply voltage
matches the requirements of the motor. A suitable circuit breaker or fused
disconnect switch should be provided. When a 3 phase motor is used to drive
a compressor, any unreasonable voltage imbalance between the legs must be
eliminated and any high or low voltage corrected to prevent excessive current
draw.
Note: This unit must be grounded.
The data label on the QT units shows general information about the unit.
The Amps shown on this label are the maximum amps allowed for the motor
size used on the unit per National Electrical Code. These amps may be greater
than the motor nameplate used but per the National Electrical Code they can
be used for wire and fuse sizing.
High voltage may cause personal injury or death. Disconnect and
lockout/tagout per OSHA regulation 1910.147 all electrical power
supplies before opening the electrical enclosure or servic ing.
Never assume a compressor is safe to work on just because it is not
operating. It could restart at any time. Follow all safety precautions
outlined in SECTION 5,
Stopping For Maintenance.
Electrical enclosures and components must be in compliance with
NEMA environmental ratings for the areas in which they are being
installed.
Overload Relay
An overload relay monitors the compressor motor electrical current and
turns the compressor motor off when an overload is sensed. It is mounted
on the bottom of the motor starter. The overload relay is designed for motors
with a 1.15 service factor. The overload relay setting should be adjusted to
the motor nameplate amp rating. If the motor has a service factor rating
other than 1.15, the overload relay setting must be adjusted to compensate.
Contact your Quincy distributor for assistance.
WARNING !
DANGER !
WARNING !
WARNING !