Electrical Connections; Single Phase Motor Connection; Mechanical Connections; Pump Location - Agilent Technologies Varian TriScroll 620 Series Installation And Operation Manual

Electrical Connections

Wire the motor and electrical interlocks (if applicable) in accordance with local electrical codes and the relevant electrical
component manufacturer's instructions. Table 2 lists the full load motor currents at various voltages.
Table 2 Full Load Motor Currents, Amps
1 phase motor 100 V
50 Hz 14
60 Hz 15.2

Single Phase Motor Connection

The pump can be configured for low voltage, 100 VAC to 115 VAC, or for high voltage, 200 VAC to 230 VAC. As supplied
from the factory, the pump is configured for low voltage. Figure 4 shows the electrical connections for a single phase
motor.
.
Violet
5
(Internal)
.
High Voltage
1. Verify the electrical supply voltage.
2. Remove the three screws (item 12 in Figure 3 on
page 5) that are holding the motor electrical cover
(item 13 in Figure 3).
3. Refer to Figure 4 to connect the motor to match your
supply voltage.
Two options are available to strain relieve the electrical
supply cable.
❑
The cable can be mechanically held under the
electrical cover in the groove provided. The
groove is sized for 14 gage cable.
−
❑
A 1/2 14 NPSM hole is also provided next to the
motor cover.
4. Wire L1 and L2 per Figure 4 using right angle flag
connectors or ring connectors.
Ensure that no exposed wiring is close to the electri-
cal cover or to other terminals on the board.
TriScroll 620 Series Vacuum Pump
115 V 200 V 230 V
13.6 7.0 6.8
12.6 7.6 6.3
.
1
L1 Power Cord
.
4
Blue (Internal)
VPI Valve (Optional)
.
2
L2 Power Cord
VPI Valve (Optional
Figure 4 Single Phase Motor Electrical Connections
.
5
)
5. Secure the ground wire under the ground screw using
a ring connector.
6. Replace the motor electrical cover and secure it with
the three (3) screws removed in step 2.

Mechanical Connections

Pump Location

Locate the pump on a firm, level surface.
Mounting holes provided in the frame can be used to
provide permanent attachment. The rubber mounts on
the frame can be removed if desired.
.
1
L1 Power Cord
.
Violet (Internal)
4
VPI Valve (Optional)
.
2
Blue (Internal)
L2 Power Cord
VPI Valve (Optional)
.
Low Voltage
7