Technical data

STRATA1

21.2 Maintenance (contd)

at b) The pressure of the installation must be between 1 and 2 bar: any possible leaks in the system

must be identified; if necessary, have a pipework engineer solve the problem.

at c) Possible leaks or weeping must be resolved immediately.

at d) In case of water leakage or ingress from the air supply pipe, the cause must be found.

at e) The siphon must be rinsed. With the burners removed, use a filling hose to insert water into

the heat exchanger, which will automatically reach the siphon. Rinse volume should be a

minimum of 2 litres.

at f) Draw your conclusions from the service screen and attend to those parts that have caused any

faults.

at g) and at h)

If necessary, adjust the gas setting on the gas valves.

at i) If the in built pumps make an un-natural noise, and in particular if the pumps are more than 5

years old, it is recommended that the pumps should be replaced by way of preventive action.

Note the pumps are fully modulating and do have characteristic “yet yet” noise which is normal at low

speeds.

at j) NEVER CLEAN THE BURNER ITSELF.

If the interior of the heat exchanger is contaminated and/or there is a deposit on the surfaces

of the coiled stainless steel pipes, the latter must be removed with a hard brush or citric acid.

(DO NOT USE A STEEL BRUSH !) Then remove any dirt with a vacuum cleaner.

at k) If dirt has deposited on the fan blades, each blade must be carefully cleaned, until the blade

material is visible again. If this is not done evenly the fan will not rotate properly and be out of

balance.

at l) Carefully bend the electrode without touching the burner, until the correct distance has been

reached.

IMPORTANT NOTE

IF ANY WATER CARRYING JOINT WITHIN THE BOILER IS DISASSEMBLED THEN THE “O” RING

SEAL MUST ALWAYS BE REPLACED, LIKEWISE IF ANY OTHER SEAL IS NOTED TO BE DEFORMED

THEN THEY SHOULD ALSO BE REPLACED.

WATER SEALING “O” RINGS ARE A ONE TIME USE ONLY AND SHOULD NOT

BE RE-USED.

Cancelling the Service Message

Following the maintenance operations, the service message (when

displayed) must be cancelled. This is done by pressing and holding in the

service button for at least 10 seconds.