Elster S300 Training manual

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 jo
inting 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.

Contacts
United Kingdom Germany USA
Elster-Instromet Elster GmbH Elster American Meter
4 Pate Road, Melton Mowbray Steinern Str. 19 - 21 2221 Industrial Road
Leicestershire LE13 0RG 55252 Mainz-Kastel Nebraska City, NE 68410-6889
T [phone] T [phone] T [phone]
F [phone] F [phone] F [phone]
www.elster-instromet.com www.elster-instromet.com www.elster-meterservices.com
[e-mail] [e-mail]
C3001EN02
A2.7.2012
Subject to change without prior notice All rights reserved
Subject to change without prior notice All rights reserved
Fig. 4
Fig. 5
S300: Commissioning Instructions
12. Remove external pressure source and replace OPSS top cap. (Wire seal if
necessary).
13.
Re-cock OPSS unit as instructed (iii) above.
14.
Replace OPSS reset cap. (Wire seal if necessary).
15.
Slowly open upstream valves to establish gas supply.
OPSS COMMISSIONING INSTRUCTIONS (For 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.
Appl
y external pressure source to a suitable point on the downstream pipework,
slowly increase pressure to that indicated on the label.
5.
Note: If pressure point on underside of OPSS unit is used as external impulse,
care must be taken to ensure that pressures a
re equalised across the orifice
before re-cocking OPSS.
6.
If unit functions as expected, exhaust and remove external pressure source.
7.
Re-cock OPSS unit as instructed in (iii) above.
8.
Replace OPSS reset cap. (Wire seal if necessary).
9.
Slowly open upstream valves to establish gas supply.
RESETTING OPSS AFTER TRIPPING
1.
Turn off all upstream valves.
2.
Dissipate downstream gas through burning and close downstream valves.
3.
Remove wire seal if fitted.
4.
Unscrew reset cap.
5.
Firmly pull out reset spindle to re-cock OPSS unit. Hold for 5 -
10 seconds and
release spindle gently. See Fig. 3.
6.
Slowly open upstream valves to re-establish gas supply.
7.
If gas supply re-established, replace OPSS reset cap and wire seal if needed.
8.
If gas supply not re-established, turn off all upstream va
lves and repeat steps 2,
5 and 6.
9.
If after the second attempt the gas supply is not re-
established, ensure all
upstream and downstream valves are turned off.
10.
Inspect system, identify and correct cause of over-pressure leading to trip-off.
11.
Repeat steps 5 and 6.