Fig. 1
Fig. 2
Fig. 3
S300
Commissioning Instructions
INSTALLATION CONDITIONS
Body pressure range: 0 - 20 Bar
Temperature range: -20ºC to +70 ºC
OPERATING INSTRUCTIONS
•
Ensure that this product is suitable for the chosen application.
•
Installation, adjustment and maintenance by authorised, trained personnel only.
•
When being fitted to an appliance, refer to the appliance manufacturers instructions.
•
Ensure that the installation provides adequate protection to prevent over
pressurisation.
•
Traffic, wind and earthquake loadings should be considered when specifying the
installation.
•
The unit should be protected from the decomposition of unstable fluids.
FITTING REGULATOR INTO PIPEWORK (A)
1.
Remove the plastic protection plugs from inlet and outlet (and external
impulse hole if applicable)
2. Ensure that installation pipework is thoroughly clean.
3. The direction of gas flow must be the same as the arrows on the OPSS body.
See Fig. 1.
4. Install the OPSS into pipework using a jointing compound approved to
national standards.
5. If external impulsed unit, connect impulse pipe as per national standards.
See Fig. 2.
OPSS COMMISSIONING INSTRUCTIONS (For non preset units)
1.
Turn off upstream and downstream isolation valves.
2.
Unscrew reset cap.
3.
Firmly pull out reset spindle to re-cock OPSS unit and release spindle gently.
See Fig. 3.
4.
Remove top cap from OPSS cover.
5.
Insert a flat bladed screwdriver into slot on the OPSS spring adjuster. See Fig.
4 HP or 5 LP.
6.
Turn clockwise (+) to increase loading on the OPSS spring to maximum.
7.
Apply external pressure source to a suitable point on the downstream
pipework, slowly increase pressure to that required for OPSS trip-off.
Note: If pressure point on underside of OPSS unit is used as external
impulse, care must be taken to ensure that pressures are equalised across
the orifice before re-cocking OPSS.
8.
Slowly turn OPSS spring adjuster anticlockwise (-) until OPSS device trips off.
See Fig. 4 HP or 5 LP.
9.
Exhaust external pressure source.
10.
Re-cock OPSS by firmly pulling reset spindle. See Fig. 3. (Hold for approx. 5-
10 secs.).
11.
Slowly increase external pressure to check for OPSS trip-off. Trim adjustment
if necessary.
Note: OPSS device is now set.