OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
6
Safety
1. For safe operation of the Hydraulic Pump Pressurization system, make
sure the pressure has been released and the gauge on the pump reads
zero before:
a. Attempting to disconnect the pressure hose from the cell at the quick-
connect.
b. Attempting to remove the cell from the heating jacket.
c. Reallocating or moving the PPT in the laboratory.
d. Refilling the hydraulic pump.
e. Performing any maintenance including tightening leaking fittings on
the pump, hydraulic fittings, or cell assembly.
2. When refilling or repairing the hydraulic system make sure any spilled oil
is cleaned. Oil on the floor is very slippery and can cause falls and injury.
Oil spills on the bench can accumulate and become a fire hazard.
3. Always use either
nitrogen or carbon dioxide
to pressurize the back
pressure receiver. Never connect it to compressed air, oxygen, or other
non-recommended gas. If nitrogen is used it must be supplied in an
approved nitrogen gas cylinder and it must be secured to meet safety
standards. CO
2
is normally supplied in small bulbs, which contain about
900 PSI, and are frequently used for field operations. Do not allow these
bulbs to be heated or exposed to fire as they can explode if overheated.
4. When pressurizing the back pressure receiver always open the supply
pressure first, then adjust the regulator. When de-pressurizing, shut off
the supply pressure first by backing out the regulator T-screw (counter-
clockwise), then bleed the system of pressure by opening the bleeder
valve.
5. Cooling the hot cell under water is very dangerous. Be very careful to
avoid touching or accidentally dropping the cell. Steam generated when
the cell contacts water can cause severe burns.
6. Make sure the electrical source is fused and grounded. Verify the power
cord on the heating jacket is in good condition and has the proper ground
connection.
