Merrychef eikon e4s - Manual (Page 40)

40 Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
SP
ARES &
REPL
A
CEMENT
2 1
3
4
19 SRB & QTS Circuit Boards
19.1 SRB replacement
19.1.1 Disconnect and isolate the oven from the
electricity supply.
19.1.2 Allow the oven to cool down.
19.1.3 Remove the oven casing.
19.1.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
19.1.5 Taking anti-static precautions, disconnect all
connections on the SRB.
19.1.6 Remove the PM (Personality Module) from the
SRB and place safely aside.
19.1.7 Release retaining screws and remove the SRB.
19.1.8 Replace SRB and secure retaining screws.
19.1.9 Reconnect all connections to the SRB, for
details see ‘SRB Terminal Locations’ (Electrical Circuits
section).
1 Ensure the thermocouple negative (-)
connection (white) and positive (+) connection
(green) are fi tted the correct way round or the
oven temperature readings will be wrong.
2 Refi t the PM removed from the old SRB to the
new SRB. Refer to the following PM replacement
if a new PM is fi tted.
19.2 QTS replacement
19.2.1 Disconnect and isolate the oven from the
electricity supply.
19.2.2 Allow the oven to cool down.
19.2.3 Remove the oven casing.
19.2.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
19.2.5 Remove the top front panel.
19.2.6 Taking anti-static precautions, disconnect all
connections on the QTS.
19.2.7 Remove the PM (Personality Module) (3) from
the QTS and place safely aside.
19.2.8 Release the four retaining nuts and remove the
QTS assembly (4).
19.2.9 Refi t the PM removed from the old QTS to the
new QTS. Refer to the following PM replacement if a
new PM is fi tted.
19.2.10 Replace the QTS assembly and secure with the
retaining nuts.
19.2.11 Reconnect all connections to the QTS, for
details see ‘QTS Terminal Locations’ (Electrical Circuits
section).