13-21-615 v01 Page 20
Electrical shock can cause injury or death. Open main disconnect switch,
lockout and tagout before working on control box.
Failure to properly ground the compressor package could result in injury or
death. Install ground wiring in accordance with the National Electrical Code and
any applicable local codes.
PARALLEL PIPING
(Figure 2-8, page 19) A separate water control valve is required to control the
discharge air temperature. If a remote (externally mounted) water-cooled aftercooler is piped in parallel
with the heat exchanger, provide a separate water control valve for the aftercooler and pipe separate inlet
water lines to both the aftercooler and heat exchanger.
The water control valve is to be adjusted to maintain oil out of the heat exchanger within the 140
F to
150
F (60
C to 66
C) range regardless of inlet water flow or temperature as long as a minimum flow for a
given temperature is met Figure 2-5, page 17 and Figure 2-6 page 18. See Section 5 for adjustment
instructions and maximum allowable lubricant temperature.
ELECTRICAL WIRING - Standard Units
– The compressor package is factory wired for all connections
from the starter to the motor, for the horsepower and voltage specified on the order. The standard unit is
supplied with open drip proof motors and a UL Type 4 control box. Totally enclosed motors are available
as factory options. See “Location” paragraph on page 12, for distance to the nearest obstruction on the
control box side of the package.
Perform all wiring in accordance with the National Electrical Code (NFPA 70) and any applicable local
electrical codes. Wiring must be performed only by qualified electrical professionals.
GROUNDING
- Equipment must be grounded in accordance with Section 250 of the National Electrical
Code.
