Why is the steam temperature below the set-point?

a. Steam pipes not sufficiently isolated for low room temperature.

To do:

1. Check room temperature.
2. Check that isolated pipes has been used during installation.
3. Increase isolation on pipes.
4. Increase feed pressure to compensate.

Why is the steam pressure zero?

a. No steam supply

To do:

1. Check pressure gauge supply pressure (SP)
2. Activate steam supply

b. Service valve closed

To do:

1. Check Manual valve
2. Open service valve slowly
3. Follow procedure for bellows sealed valve

c. Strainer clogged

To do:

1. Check strainer filter
2. Clean or replace filter

d. On-off valve defective

To do:

1. Check movement of actuator on-off valve (SV).
2. Manually open the valve or see if it opens in maintenance mode from the HMI.
3. Replace if actuator not working

e. Solenoid Valve defective on SV

To do:

1. Check if valve is defective by activating manual override.
2. Check electrical signal.
3. Check control box, according to electrical diagram.
4. Replace defective fuse, electrical component or wire. If electrical signal is ok, then replace solenoid.

f. Regulating valve clogged or actuator damaged

To do:

1. Check the filter and/or actuator (RV).
2. Manually open the valve or see if it opens in maintenance mode from the HMI
3. Clean or replace filter

Why is the steam pressure too high/low?

a. Steam supply too low

To do:

1. Check pressure gauge (SP)
2. Check that filters are not clogged
3. Supplied steam pressure must be 6 – 10 bar

b. Service valve not full open

To do:

1. Check Manual valve
2. Open service valve slowly

c. Strainer clogged

To do:

1. Check strainer filter
2. Clean or replace filter

d. Clean Steam filter clogged

To do:

1. Check pressure drop over the filter
2. In case pressure drop exceeds 1 – 2 bar, filters must be cleaned or replaced

e. Condensate drain clogged

To do:

1. Check that condensate is flowing from drain outlet, under the regulating valve
2. Clean steam filter and under the treatment chamber
3. Open valves or remove material clogging from the condensate return

f. Condensate check valve at condensate drain defective

To do:

1. Check that condensate is flowing
2. Follow procedure for defective check valve

g. Pressure regulating valve (RV) defective

To do:

1. Check that feedback is not clogged.
2. Check that filter insert is not clogged.
3. Tap valve to see if it has become stuck over time.
4. Replace filter insert if necessary.
5. Readjust valve to maximum then to minimum then to valid setting, to see if function can be restored.
6. If not, then replace valve.

What to do when there comes water in whistles?

a. Condensate drain clogged

To do:

1. Check that condensate is flowing from drain outlet
2. Check that pressure in drain system is below 1 bar</p>
3. Open service-valves or remove material clogging the drain.

b. Condensate drain valve defective

To do:

1. Check that condensate, but not steam is flowing from all drain valves.
2. Follow procedure for defective drain valve