Fan Assembly - Benchmark 27i System Compact Installation, Commissioning And Servicing Instructions

SERVICE AND SPARES

7.8.10 FAN ASSEMBLY

CAUTION: Component replacement:
▶ After replacement of a gas related component, where
a gasket or seal has been disturbed or replaced, check
for gas tightness using a gas sniffer/analyser.
▶ On re-assembly check all affected seals for cracks,
hardness and deterioration.
If damaged or in any doubt the seal must be replaced.
▶ Also after re-assembly, carry out the following
checks:
Fan pressure in section 7.5,
Flue gas analysis in section 7.6,
To remove the fan, disconnect the electrical mains and gas supplies, and
remove the following components:
• Flueway
• Combustion air inlet pipe and gas pipe
FLUEWAY REMOVAL
CAUTION: Flueway sump seal.
▶ Replace the sump seal every time that the Flueway to
sump connection is disturbed.
▶ Refer to figure 86 for Flueway removal.
1. Release the two screws securing the Flueway to the sump.
2. Using a screwdriver under the tabs (1) next to the screws, lever the
Flueway up to clear the seal and pull the Flueway forward.
3. Rotate the exhaust pipe to the left and pull the Flueway down to
separate from the exhaust pipe.
2.
1
Fig. 86 Flueway removal
50
3.
1
1.
REMOVE THE USED SEAL
4. Discard the "tubular" seal [2] or the "moulded" seal [3], depending on
which type is fitted and replace with the seal that is provided.
Fig. 87 Remove the existing seal
FITTING THE "MOULDED" SUMP SEAL
1. Place the seal [3] on the sump interface.
2. Ensure that the lug flaps are mounted onto the sump lugs.
Before fitting the Flueway:
▶ Ensure that the seal is clean and free from debris.
Fig. 88 Moulded style seal
FITTING THE "TUBULAR" SUMP SEAL
3. Fit the Flueway sump seal [2] into the Flueway.
Ensure the seal is fitted fully into the recess in the underside of the
Flueway.
Before fitting the Flueaway:
▶ Ensure that the seal is clean and free of debris.
5.
Fig. 89 Tubular style sump seal
Greenstar i System Compact
2
4.
3
6720803800-12.1Wo
1.
2.
6720803800-13.1Wo
ErP - 6 720 813 280 (2015/07)