Maintaining The Press Assembly; Maintaining The Hydraulic Power Unit; Adjusting The Platen Control Switch - Ametek 4207D Operating Manual

Maintaining the Press Assembly

Use the following procedure to inspect the condition and safety of the press assembly:
1. Verify that the door limit switch is operational.
2. Inspect the cylinder and repair any leaks.
3. Inspect the hydraulic hoses and replace if signs of deterioration exist.
4. Inspect the upper and lower platens. The top platen must be level with respect to the
base.
5. Inspect the columns on the press. Do not use the press if the columns are damaged in any
way.
6. Inspect the load cell mandrels and replace if damaged or deformed.

Maintaining the Hydraulic Power Unit

Use the following procedure to inspect the condition and safety of the hydraulic power unit
assembly:
1. Verify that the oil level is within the limits of the sight gauge on the reservoir.
2. Test the operation of the high temperature limiting circuit. Verify that the set point is
70C.
3. Locate and repair any hydraulic leaks.
4. Verify that the fans located at the back of the enclosure are functioning.
5. Verify that the system hydraulic pressure is set at 2,600 psig. If pressure in less than
2,000 psig ± 200, see Adjusting System Pressure located in this section of the manual.

Adjusting the Platen Control Switch

The platen control switch is used to reduce the load on the sample as the sample is initially
clamped. The platen assembly is equipped with a brass platen that is connected to a limit
switch located above the steel top platen. As the sample is clamped, clearance between the
brass and steel platens is used to close a switch that suspends the control program and
hydraulics.
Once the sample is clamped without causing excessive initial loading, the program is
restarted.
SECTION 3 – MAINTENANCE
3-3