Merrychef eikon
®
e2s service and repair manual
27
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3 Technical data
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Regulatory standards compliance
Degree of protection
IPX0
Noise emission
max. 70 [dBA]
Approval marks
Tested safety
CE, CB (IEC)
Hygiene
UL-EPH (NSF/ANSI 4)
Technical data, checks and verification
Description
Features
Function
Rating
Trouble shooting
Fuse
Glass
SRB ELV
1.25amp
Check continuity
through fuse.
Check fuse holder for
cracks.
Check for line potential
on both terminals of
fuse holder.
Door Open message
displayed when F2 has
failed open circuit. No
functionality when F3
has failed open circuit
Fuse F1
Ceramic Time Delay
Heating Circuit,
supplies voltage to the
SRB for the heating
elements
20 Amp
Fuse F2
Ceramic Time Delay
Microwave Circuit,
supplies voltage to the
HV components
through the interlock
switches
20 Amp
Fuse F3
Ceramic BS1362
Control Circuit supplies
voltage to the LV
transformer
13 Amp
*(12 Amp see note 1)
Door Interlock Switches Common, Normally
Open and Normally
Closed terminals;
RHS SW1 Monitor
(inner C to NC)
RHS SW2 Secondary
(outer C to NO)
LHS SW3 Primary (C to
NO)
Door Open message
displayed when SW3 is
open
Door switches are for
safety and they prove
the oven door is
physically closed or
open. The microwave
circuit will not be
energized if the door is
open. L2 runs through
these switches.
Sequence: When
opening the door: SW3
opens first, then SW2
opens, lastly SW1
closes.
When closing the door:
SW1 opens first, then
SW2 closes, lastly SW3
closes
SW1 & SW2: 250VAC
22A
SW3: 250VAC 20A (up
to 75A inrush)
Check F2
Check for continuity
Check for proper wiring
Check for proper
adjustments
Check for physical
damage such as bent
activating tabs (see
section 6.11 ‘Adjusting
the door’)
Check SRB connections
X10, X4a and X102b
Check SRB LED
Check for line potential
on SW3 NO
Voltage Selection
Relay(s)
Receives line voltage at
the C terminal. When
the coil of the relay is
energized the output
will be at the NO
terminal. Without the
coil energized, the
output will be at the NC
terminal. The SRB
energizes the coil when
the mains supply
voltage is <218VAC.
One Relay fitted as
standard, two Relays
fitted to High Power
oven versions.
* not fitted to JP models
Supplies correct
voltage to the HV
transformer at the
primary winding
terminals. Output from
NC: Wired to HV
transformer’s 230V
(*240V) primary
winding. Output from
NO: wired to HV
transformer’s 200V
(*208V) primary
winding.
Mains voltage
continually checked,
relay
energised/deenergised
when door is open and
then closed.
Switched Voltage:
200/230VAC
*(208/240VAC see note 2)
Coil 12VDC / 255
W
Check SRB plug
connection X101, X4b
and X102b
Check for proper
wiring. Check mains
supply voltage in
‘Visual View’ if voltage
is above 218VAC the
relay should be de-
energised (12VDC not
present at coil with
switched C connected
to NC).
