504-2033 Iss 1j 7 April 2005
SECTION THREE
PROCEDURE FOR PERIODIC CHECKING OF
paraPAC P200/200D/220D
1. Record the serial number and model of the paraPAC and, where applicable, the serial
number located on the regulator assembly body.
Using the Pneupac datecode chart, check if the regulator assembly requires the
recommended 4 - 5 year complete disassembly service (refer also to Maintenance Manual
504-2008 for High Pressure Regulator Assembly).
2. Check Condition of Carry Case
i) Check case lids as they can tear on hinges due to mishandling.
ii) Check wooden stiffeners in side panels for rigidity.
iii) Check elastic and Velcro strapping for condition and security.
iv) Check case exterior for signs of splitting along the edges.
v) Check carry handles for security and tears.
vi) Check all zips for security and operation.
3. Check condition of Regulator Assembly
i) The warnings in Section One relating to the use of oxygen are particularly relevant to
gas cylinders and cylinder pressure regulators.
ii) Check that the cylinder valve is closed and the regulator assembly is de-pressurised.
iii) Disconnect the equipment probes from the regulator assembly.
iv) Release the T-handle slowly and remove the regulator assembly from cylinder.
v) Check that the T-handle is straight, undamaged and screws in and out freely.
vi) Check that the T-handle retaining circlip is in position.
vii) Check that the hexagonal nut on the pin-index yoke is tight.
viii) Ensure that the gas indexing pins are in position and are secure.
ix) From June 1997 a sintered filter has been fitted into the end of the pin-index yoke
nipple. Check that this filter (where fitted) is clean and not blocked. (The filter may be
replaced as described in Section 4 of the Maintenance Manual (504-2008) for High
Pressure Regulator Assembly).
x) Check the gas specific outlet connector and assembly for slackness and tighten if loose.
xi) Check that the relevant probe fits correctly into the connector.
xii) Check that the gauge is not loose and has not been bent in relation to the regulator.
xiii) Inspect the gauge for visible damage front and back. Ensure that the gauge indicator
needle is positively against the zero position stop.
xiv) Check that the gauge is fully protected by its rubber shroud and that the shroud is not
damaged.
xv) Check that the two rubber blow-out discs in the over-pressure relief ports are in place in
the regulator body.
xvi) Check that the secondary relief valve on the corner of the regulator block is not
damaged or blocked. If damage is evident the regulator must be changed.
xvii) If a Constant Flow Selector Head is fitted check the condition, looking for damage to
the head and/or the outlet connector.
xviii) Check that the head is securely fastened to the regulator manifold.
xix) Check that the Constant Flow Selector Head clickstop mechanism is effective.
xx) Check that any movement between the pin-index yoke and the regulator assembly
disappears when the assembly is attached to a cylinder.
To Next Page
Loading...