Worcester GREENSTAR UTILITY 32/50 Instruction Manual page 42

8 716 109 711 b 07.10 14/7/10
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INSPECTION AND SERVICE
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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716
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INSPECTION AND SERVICE
Clean the boiler:
Manifold access:
Release screws (E) to remove the flue manifold
access cover (F) and clear any debris.
Check the flue system and clean if necessary.
Remove the baffle retainer and baffles
(H) from the secondary heat exchanger.
SLOTS DOUBLE SINGLE
BAFFLES BAFFLES
32/50kW* 25 10
50/70kW 31 15
*Five of the slots do not have baffles.
Check and clean the secondary heat
exchanger surfaces.
NOTE: Do not use wire brushes and cleaning
agents to clean the stainless steel secondary
heat exchanger components.
Check the condensate route (G) is clear.
The condensate trap (K) should be removed
and checked for debris.
Release the pipe locking tab ( I ) and
disconnect the flexible pipe ( J ) from the top
of the trap and move the flexible pipe up
away from the trap
Release the trap locking tab ( L ) and move the
trap up and back to remove from its mountings.
Clean the trap by flushing with water.
Check the O ring seals and replace if
necessary, grease the seals with a solvent
free grease.
Refit the trap making sure that the locking
tabs are locked in place.
Pour 500ml of water into drain (G) to refill
the condensate trap.
Clean the secondary heat exchanger baffles
(H) if necessary and refit correctly.
Refit the baffle retainer.
Check the seal on the manifold access cover
(F) and replace if necessary.
Refit the flue manifold access cover (F)
and secure with screws (E).
Combustion chamber:
Release the M10 retaining nuts and washers (B)
and remove combustion chamber access door (A).
Check the fibreglass rope seal on the
combustion chamber access door (A) and
replace if necessary.
Remove and check the baffle retainers (D).
Remove the baffles (C), clean and check the
condition of the baffles and the acoustic
insulation. Replace any baffles or insulation
pads considered to be badly corroded/degraded.
Thoroughly clean all of the heat exchanger
surfaces using a suitable brush and clear all
loose debris from the combustion chamber.
Check the condition of the combustion
chamber access door insulation. If the
insulation is damaged the door assembly
must be replaced.
Refit the items in reverse order ensure the
baffles (M) and baffle retainers (L) are
correctly fitted for the boiler output as shown
in the plan view opposite.
Refit combustion chamber door (K).
IMPORTANT: Secure with nuts and
washers ( B ) and tighten, using the
sequence shown, until the chamber door is
firmly secured, do not over tighten the nuts.
109 711B 07.2010
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