Product Manual

QT/QTS Series Quincy Compressor

50161-108, January 2013 9 3501 Wismann Lane, Quincy Ill. - 62305-3116

Noise

Noise is a potential health hazard that must be considered. There are federal

and local laws governing acceptable noise levels. Check with local ofﬁcials for

speciﬁcations.

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 distribu-

tor 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 electri-

cian 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.

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 precau-

tions 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 mo-

tor nameplate amp rating. If the motor has a service factor rating other than

WARNING !

DANGER !

WARNING !