ABB IRB 6620 - Water and Air Unit; Introduction

2 DressPack and SpotPack
2.7.1 Introduction
96 Rev.E 3HAC 025861-001
2.7 Water and Air unit
2.7.1 Introduction
General
The Water and Air unit contains components for water and air distribution and
control within the SpotPack. The water and air unit is controlled from the robot
controller via the process software. Wiring is made via the Spot Welding cabinet.
The capacity and functionality depends on the choice of different option
combinations, see water and air unit options under this chapter.
The unit is only used for the spot welding application
The Water and Air unit
The Water and Air unit has the following main features (See Figure 61):
• Adjustable, high speed water flow sensors.
• Adjustable digital pressure switch for air.
• Air filter with auto draining.
• Possibility to balance water flow for complete package and for individual circuits.
• Preparation for additional options and preparation for easy exchange of complete unit
or separate circuits.
• Equipped with extra (plugged) air outlets.
Figure 61 Water and air unit with outer dimensions (mm), media connections, signal connection.
The standard water and air unit consists of four main assemblies.
• Water in circuit
• Water return circuit
• Air supply circuit
• Split box (Not available for option 792-6)
Cables and hoses required for Water and Air unit are defined and described under
each option for water and air unit.