Glow-worm SUSTAIN 25c -A - Completing Repair Work; 12 Decommissioning the Product; 13 Customer Service

Decommissioning the product 12
0020200954_00 SUSTAIN ..c Installation and maintenance instructions 27
11.6.7 Replacing the expansion relief valve
1
2
1. Remove the clip (2).
2. Remove the expansion relief valve.
3. Fit the new expansion relief valve with a new O-ring.
4. Reattach the clip (2).
11.6.8 Replacing the flow sensor
1
B
A
1. Pull out the plug.
2. Remove the flow sensor (1).
3. Install the new flow sensor.
4. Plug in the plug.
11.6.9 Replace the pressure sensor
1
2
1. Pull out the plug.
2. Remove the clip (1).
3. Remove the pressure sensor (2).
4. Install the new pressure sensor.
5. Reattach the clip (1).
11.7 Completing repair work
▶ Check that the product functions correctly and is leak-
tight (→ Page 21).
12 Decommissioning the product
▶ Switch off the product.
▶ Disconnect the product from the power mains.
▶ Close the gas isolator cock.
▶ Close the cold water stop valve.
▶ Drain the product. (→ Page 24)
13 Customer service
For contact details for our customer service department, you
can write to the address that is provided on the back page,
or you can visit www.glow-worm.co.uk.