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HFRR (High Frequency Reciprocating Rig)
/ Operation
Cleaning
The following procedures are general and intended for guidance only. The specific requirements of the relevant standard test method should be followed regarding specimen cleaning.
Locate items that come into contact when setting-up or running a test:
- The test specimens - lower (plate/disc) and upper (ball)
- Upper and lower specimen holders
- Two stainless steel button head screws that secure the lower specimen and grub screw that secures the upper specimen
- Three black cap head screws that secure the upper and lower specimen holders
- Hex keys used to secure the lower and upper specimens and tweezers
Prior to testing, the parts that will come into contact with the test lubricant should be thoroughly cleaned. The upper and lower specimen holders and the respective test specimens, the two stainless steel button head screws which retain the lower specimen, the three black cap head screws which retain the upper and lower specimen holders and the hex keys used to tighten them should be placed in a wide based beaker or flask, covered in a suitable solvent and ultrasonically cleaned.
Below is a brief description of the test cleaning requirements for each standard. For a full description please consult your copy of the test method.
CEC & ISO
Specimens are left to soak for at least 8 hours in a beaker of toluene. They are then cleaned in a ultrasonic bath for 10 minutes. Specimens and accessories are then placed in a clean beaker of toluene and cleaned in a ultrasonic bath for 10 minutes. They are then placed into a new beaker with acetone and cleaned for 2 minutes in a ultrasonic bath.
ASTM
Specimens are left to soak for at least 12 hours in a beaker of toluene. They are then cleaned in a ultrasonic bath for 7 minutes. Specimens and accessories are then placed in a clean beaker of toluene and cleaned in a ultrasonic bath for 10 minutes. They are then placed into a new beaker with acetone and cleaned for 2 minutes in a ultrasonic bath.
IP 450/2000
Specimens are left to soak for at least 12 hours in a beaker of toluene. They are then cleaned in a ultrasonic bath for 10 minutes. Specimens and accessories are then placed in a clean beaker of toluene and cleaned in a ultrasonic bath for 10 minutes. They are then placed into a new beaker with acetone and cleaned for 2 minutes in a ultrasonic bath
