Hamworthy Warmwell 60 Installation, Commissioning And Servicing Instructions page 45

Re-fit the fan assembly ensuring the gasket
between the fan fixing plate and plenum is replaced
if damaged. Spin the fan to ensure the impeller is
free. Ensure the fan plug and socket assembly is
securely fitted and locked together.
boiler and check for correct operation of pressure
switches. See Figure 2.2 (p4) for correct settings.
14.7 Fan Speed Controller
Ensure power supply is isolated. Remove the top
casing front panel secured by spring latches. Insert
a screwdriver into the slot in the 7 way plug and
socket assembly connected to the fan. The plug can
then be pulled away from the socket. Disconnect the
electrical connections from the main PCB (CN1,
CN2 & CN11), and carefully withdraw the cables
HAMWORTHY HEATING LTD
from the rear of the panel. Disconnect the float
switch cable via the push fit connector. Note the
relative positions and disconnect the flexible hoses
from the pressure switches. Remove the exhaust
Re-light the fan control panel from the top side panels (secured
by 4 screws). Remove the fan speed controller
cover (secured by 2 screws)
Note the positions of the electrical connections on
the PCB and carefully disconnect the leads from the
screw terminal rail - See Figure 9.1 (p15). From the
rear of the exhaust fan control panel, remove the 4
screws securing the PCB. Replace components in
reverse order. NOTE! The replacement speed
controller is factory set !
Re-light the boiler using instructions on the inside of
the door. and check for correct operation at both
High and Low fire. See Figure 2.2 (p4) for correct
settings. If necessary, refer to Section 11.4
Commissioning the Boiler (p24), for correct
procedures.
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WARMWELL 500001091/F