Applies to machines built from: May, 1995 to May, 2012
Caution: When you do maintenance or repair on CNC machines and their components, you must always follow basic safety precautions. This decreases the risk of injury and mechanical damage.
You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes. Serious damage to the machine components can result in costly repairs. The service technicians at your Haas Factory Outlet (HFO) have the training and experience, and are certified to do these tasks safely and correctly. The repair and service work performed by your HFO is protected with a limited warranty.
Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you have any doubts about doing a procedure contact your Haas Factory Outlet (HFO) and schedule a service visit.
Jog the spindle head to 14.5" (36.8 cm) above the table.
Put a wood block on the table. Lower the spindle-head casting onto it.
Caution: Do not let the spindle touch the block. This causes damage to the spindle.
Push [POWER OFF].
Set the main circuit breaker to the OFF position. Lock the main circuit breaker. Use an approved lock with an approved safety tag.
Pressurize the system to the correct psi (bar). For the correct value, refer to the chart at the end of this procedure.
Install the tank into the machine.
Push [ZERO RETURN]. Push [Z].
Examine the tank and hoses for leaks or unusual noises. Make sure the tank pressure is correct at the top of travel. Add nitrogen if necessary. Remove the "Charge/Discharge-Kit". Replace the valve cap.
This chart shows the correct pressures for the counterbalance tank. Measure the pressure at the top of Z-Axis travel for VMCs and at the top of Y-Axis travel for HMCs. Pressure that is 50 psi (3 bar) higher than the value in the chart is permitted. But pressure that is lower than the value in the chart is not permitted.
|Model||Made After||Pressure||Made After||Pressure||Made After||Pressure|
|VF-3/4 (VCE 1000/1250)||4/28/1995||1150||79|
|VF-5, VM-3, VF-3YT (VCE 1300)||7/21/1998||950||66||10/14/1998||875||60|
|VF-5/50, VF-3YT/50 (VCE 1300)||7/21/1998||1100||76|
|VF-6/7/10/12 - 50 (VCE 1600, 2000, 3000)||10/30/1997||1150||79|
|VF-6/7/10/12 (VCE 1600, 2000, 3000)||10/30/1997||750||52|
|VF-8/9/11 - 50 (VCE 1600, 2000, 3000)||7/21/1998||1550||107|
|VF-8/9/11 (VCE 1600W, 2000W, 3000W)||10/30/1997||750||52|
|VF-O/OE/EXT/1/2 (VCE 475/500/550/700/750)||4/28/1995||750||52|