VC Training

Table Setup and Floating

9-17-2004

Agenda

• General– Air Supply Requirements

• Assembly– Assembling the System– Leveling the Table– Isolating the Table

• Installing Leveling Valves• Connecting Air Lines• Adjusting Leveling Valves

• Troubleshooting

Air Supply Requirements

• Constant air supply required during operation• Bottled nitrogen• Compressed air

• No CO2 (cause freezing)

– After initial setup air is only consumed to compensate for load changes

– Pressure requirements• Determined by dividing total payload and table weight by

isolator diaphragm area + 10 psi.

(Payload weight + Table weight)

Total isolator diaphragm area (25.9 in2/isolator)

+ 10 psi

Air Pressure Example

RS4000-510-8 (1250 lbs)Payload ( 445 lbs)Total (1695 lbs)

(445 + 1250)

(4 isolators) * (25.9 in2/isolator)

+ 10 psi 26 psi=

Approximate net weights (±10%) for 4 ft (1.2 m) wide steel tables. For 5 ft (1.5 m) wide models add 20%, for 3 ft (0.9 m) models, subtract 25%. Shipping weights can be estimated by adding 100–200 lbs (45–90 kg) for crate weight.

RS4000-510-8

Weight = 1000*1.2 = 1,250lbs

Assembly – Assembling the system

• Position isolators per sketch below (standard length tables)– Custom tables – isolator positions will be included

in a data package provided with system

16.0 (406) 6.0 (1800)  

22.0 (559) 8.0 (2400)  

27.0 (686) 10.0 (3000)  

32.0 (813) 12.0 (3600)  

37.0 (940) 14.0 (4200)  

42.0 (1067) 16.0 (4800) 59.1 (1500) 

47.0 (1194) 18.0 (5400) 48.0 (1200) 

53.0 (1346) 20.0 (6000) 36.0 (900) 

in. (mm) ft (mm) in. (mm) 

DIMENSION (A) LENGTH (L) WIDTH (W) 

Assembly – Assembling the system

Bolt isolators to table using clips, bolts and wrench provided

Leveling the Table

• Place a level on the table top in about the center• Adjust the support as required to level the table• When level, make sure each isolator support is

resting against the bottom of the table and is centered between the clips

Isolating the Table - Installing Leveling Valves

• 3 valves are used in all systems regardless of the number of isolators

• Leveling locations are selected in order to form the largest triangle possible

IPV-KT packaged in box IPV valve and associated mounting hardware

Isolating the Table - Installing Leveling Valves

Mounting screw holes

Control arm

Table height sensor

Over-pressure relief valve

Air supply

Metering needle valve

Isolator pressure gauge

Air line to isolator

Isolating the Table - Installing Leveling Valves

• Set the table height sensor adjustment screw to center of travel

• Attach the leveling valve to isolator using the 2 mounting screws and nut plate provided

• Rotate control arms on valves “A” to point to the outside of the table

• Rotate control arm “B” to point to the center of the 2 isolators it is controlling

Isolating the Table - Connecting Air Lines• Connect air lines to the isolator as shown below (use translucent tubing

and tee connectors.• Connect grey tubing between the air line to isolator (hose barb) and the

isolatorA razor blade works best for cutting tubing

Translucent tubing

Grey tubing

Tee connectors

Isolating the Table - Connecting Air Lines

• The adjacent diagrams detail the valve connections to the isolator

Translucent tubing

One Isolator

Two Isolators

Isolating the Table – Adjusting Leveling Valves

• Close metering needle valve on each valve. Re-open 1/8 – ¼ turn.

• Turn on Air supply and adjust to calculated pressure (DO NOT EXCEDE 100psi)

• If table does not float within 5 minutes, slowly increase pressure or adjust valve height adjustment screw to hold the control arm down further. Be sure metering needle valves are open.

• If table oscillates reduce pressure and/or close needle valve slightly

Metering needle valve

Control arm

Table height sensor

Troubleshooting