Table of Contents
Advertisement
Section 3 – Maintenance
Maintenance Schedule
COMPONENT
Oil
Check Level
System Pressure
Press Assembly
(See procedure
below)
Hydraulic Power
Unit (See
procedure below)
High Temperature
Limiting Circuit
Platen Control
Switch
Load Cell
This maintenance schedule applies to normal usage of two tests per day. Detailed procedures for these operations are
contained in your manual.
Filling the Oil Reservoir
The system reservoir will not require refilling unless the oil is
drained or a leak occurs. The oil should be changed every two
years. To fill the reservoir, use the following procedure:
1. Remove the reservoir fill cap.
2. Fill the reservoir using 10W30 synthetic oil. Verify that
the oil is not contaminated. Do not reuse old oil.
3. Fill the reservoir until the oil level is mid-range on the
sight gauge on the front of the reservoir.
Adjusting the System Pressure
The system pressure must be set to a value greater than the maximum pressure required by
the system to create the anticipated loads. Use the following procedure to adjust the system
pressure:
MAINTENANCE SCHEDULE
Model 4207D Digital Compressive Strength Tester
EACH TEST
MONTHLY
SECTION 3 – MAINTENANCE
3 MONTHS
6 MONTHS
Adjust as needed
Calibrate
Gauge
Reservoir fill cap
3-1
ANNUAL
Every two years,
change the oil
Check the system
pressure, adjust
to 2600 psi
Perform
maintenance
checks below
Perform
maintenance
checks below
Verify operation
Advertisement
Table of Contents
