Test Integral Fitted Safety Valve; Maintenance; Access To Internal Components; Flow Restrictor - Seetru Quicktester Operating Instructions

7.

Test Integral Fitted Safety Valve

The integrity of the safety relief valve, which is set at 61 bar and is supplied with the unit, can readily be checked in a similar
manner to the integrity test. Using this method, the safety relief valve does not have to be removed from its position inside the case
where it is attached to the valve test port block.
7.1 Fit a dial gauge that has a full-scale deflection of 90 bar to pressure gauge port 3.
7.2 Fit a sealing plug into the safety relief valve test port 2.
7.3 Connect the unit to a regulated supply.
7.4 Adjust the supply regulator to 70 bar.
7.5 Follow section 3 'Sequence of Operation'.
7.6 On no account apply a pressure in excess of 70 bar.
8.

Maintenance

Prior to any maintenance, the supply pressure must be isolated and attached pipe-work
disconnected.

Access to Internal Components

8.1
The unit contains a safety relief valve, which must be included in any maintenance scheme required by the current pressure
systems regulations. To gain access to the internal components open the case by:
8.1.1 Remove the safety relief valve test port adaptor.
8.1.2 Remove the pressure gauge and adaptor.
8.1.3 Remove the control valve operating hand wheels by prising off the plastic cover and unscrewing the retention nut.
8.1.4 Turn the unit over.
8.1.5 Unscrew the four rubber feet.
8.1.6 The top and bottom halves of the case will now separate.
8.1.7 Turn the unit over, exposing all of the internal components.

Flow Restrictor

8.2
Periodically check the restrictor for blockage by holding up to a light source and viewing through the bore. Replacement
restrictor's are available from Seetru. Please quote part reference number M00000210.
To remove the flow restrictor (See Picture B):
8.2.1 Unscrew conex supply port.
8.2.2 Unscrew and discard the flow restrictor.
8.2.3 Assemble a new flow restrictor.
8.2.4 Reassemble is reverse of above. Ensure restrictor is fitted in direction indicated by arrow.
8.2.5 Carry out an integrity test as detailed Para 6.
Picture B – Shown with Cover Removed, not necessary to replace Restrictor
Pressure Gauge
Port 3
Inlet Control
Valve 1
Quicktester Installation, Operating and Maintenance Instructions Issue: 3 03/08/04 G43INS
Flow Restrictor
Dowty Seal
Conex Supply Port
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