Chapter 2 – Installation
Page 2-4
TestEquity 1007S Temperature Chamber
Voltage Configuration
NOTE:
Refer to Figure 2-1 on the previous page for the location of the input voltage
configuration terminals on the electrical subpanel that are described below.
To access the electrical subpanel, turn the Disconnect Switch to the OFF position. Remove the
lower door retaining screw located on the right side. Open the lower door.
230 V / 60 Hz Input Configuration
1.
Locate the Control Transformer TR1. Wire number TA must be connected to the 230 V
terminal 4 on Control Transformer TR1.
2.
Locate the Terminal Strip. On the bottom of terminal H3 there must be only wire H3, NOT
H3A. Wire H3A must be capped off.
208 V / 60 Hz Input Configuration
1.
Locate the Control Transformer TR1. Wire number TA must be connected to the 208 V
terminal 3 on Control Transformer TR1.
2.
Locate the Terminal Strip. On the bottom of terminal H3, there must be wire H3 and H3A.
Connection to the Power Source
2
CAUTION:
This chamber should be connected to the AC power source by a qualified
electrician who is familiar with industrial plant wiring.
The Disconnect Switch on the front panel removes primary power to the entire chamber. All
branch circuits on the load side of the Disconnect Switch are individually protected. However,
your local electrical code may require a separate disconnect switch within sight of the chamber.
Input Wiring Preparation
1.
Turn the Disconnect Switch to the OFF position.
2.
Remove the lower door retaining screw located on the right side. Open the lower door.
3.
Remove the chamber’s right side panel.
4.
Mount the input wire through the hole on the rear of the chamber, using an appropriate
bushing. An additional 4-feet of wire will be needed need to reach to the terminals on the
electrical subpanel. The wires will need to pass through the Input Access Hole. This hole is
located in the corner of the partition which separates the compressor compartment from the
electrical compartment. Three tie points are provided on the side of the chamber to secure the
input wiring with tie-wraps.
5.
Locate the Disconnect Switch.
6.
Connect the “Hot” input wires to terminals L1 and L2 on the Main Disconnect Switch.
7.
Connect the Ground wire (NOT A NEUTRAL) to the Ground terminal.
8.
Put the chamber side panel back on and close the lower door.
