AEG MC9-MV9, MC13-MV13 User Manual

Handbook Handbok Handbuch Manuel

MAXIMA

MC9-SA, MV9-BA,

MC13-SA, MC13-BA,

MV13-SA

36 23 199-01 (F)

Box 938, SE-671 29 Arvika,

Sweden

Tel [phone] * [phone]
Fax [phone] * [phone]

MC9/13
MV9/13

Product safety

Application

The cabinet is meant for packaged chilled foodstuffs
and shall not be used for storage of other products.

Design and testing

The cabinet is CE-marked and complies with valid
EU-directives (low voltage directive and electro
magnetic compatibility directive). All cabinets have
been tested regarding electrical earthing and insu­lation. They have also been tested (pressure tested)
regarding the evaporator and condenser. The cabinet
has been test run regarding function and leakage.

Service and repair

Service and repair (except cleaning) must only be
made by persons qualified to carry out service work
on the product and who knows the function and
design of the cabinet. These are responsible that the
safety is not impaired. Special notice should be
attended to

• earth connection

• insulation resistance

• exchanged components must be equivalent

with the original component

When servicing the refrigerant circuit please note that

• the work must only be done by persons with
certified competence, and in accordance with
national regulations.

• the refrigerant must not be discharged to the
atmosphere

• Discharging and charging of refrigerant must
be made through the schrader valve, with the
refrigerant in liquid phase

Description of function

Operation

The refrigeration is made with the help of fin coils in
the bottom and fan assisted air circulation. The airs is
sucked in through the grille in front of the bottom shelf
and is discharged cooled partly through the perfora­tion in back and ceiling plates and partly through the
air supply in front of the ceiling plate. The evaporator
fans (M2.1) are in operation continuously.

The temperature is controlled by a thermostat (S1,
see page 9) which controls both timer (S4) and also
the relay (K1). The control of the timer means defrost
interval based on the compressor operation time. The
relay then controls the compressor (M1) and the
condenser fans (M2.2). At compressor operation the
air circulates in the machine compartment through the
air supply grille, passes condenser and is discharged
at the back. When the compressor standstill this flow
is reversed in order to clean the condenser surface.

Temperature, pressure and flow for the system during
operation when the thermostat cuts-out are shown on
page 8.

Defrost

The frost is melted with the help of air circulation from
the evaporator fans, which operates also during
defrost.

Defrost is initiated by the defrost timer, which via the
relay cuts out the compressors. Defrost is terminated
by the defrost timer when the set time has elapsed.
Defrost to some extent also takes place when the
thermostat disconnects the compressors. At defrost
the product temperature rises with some degree.

• Charging with another refrigerant than the
stated must not be made without the approval
of Carrier.

36 23 199-01 (F) 2

Settings

(Set values see "Technical Data")

Operating thermostat

The thermostat is set using the knob in the thermo­stat house, so that the knob figure points to the index
on the panel plate.

MC9/13
MV9/13

Common reasons for disturbances
in operation

Temperature too high

• Mains fuse blown due to other equipment also being

connected.

• Influence of draught and/or heating sources? See

page 4

• Overloaded?

• Dust laden condenser?

• Air circulation blocked? See page 4

• Condenser fan defective?

• Operation sensor defective (or incorrect set)?

• Defective relay?

• Compressor has a defective start relay?

• Compressor defective?

Defrost problems

• Defective defrost sensor (no defrost)?

• The thermostat is set colder than pos. 3?

Summary of warranty conditions

Faults occurring during the warranty period are
covered by the warranty with the exception of;

• Transport damages and fair wear and tear

• Adjustment of thermostat and timer

• Fuses, fluorescent tubes, starters or similar

• Problems in connection with an incorrect installation,

abnormal use and non-maintenance.

Repair instruction

Replacement of compressor

• Move the service pipe with the schrader valve
to the new compressor

• Always exchange the drier

Replacement of thermostat

• Carefully lift and remove the front glass.

• Loosen the 3 screws, placed in the slot for the front

glass.

• Loosen the 2 screws under the lower front.

• Remove the front.

• Remove the sealing of the bulb tube, and which is

inserted at the back of the cabinet.

• Pull out the bulb tube.

• Loosen the thermostat knob.

• Loosen the 2 cables on the thermostats left side.

• Loosen and remove the old thermostat.

• Mount the new thermostat.

• Put back the 2 cables.

• Put back the thermostat knob.

• Insert the bulb tube through the right hole. Bend the

tube a little upwards and follow the ceiling until the
tube comes out on the back of the cabinet.

• Insert the bulb tube in the plastic tube until it reaches

the bottom.

• Seal the bulb tube with i.e. silicone to avoid humidity

to reach it.

• Remount in reverse order according to the first 4

points.

Replacement of fluorescent tube end wall

• Loosen the light sheet by loosening the 4 screws
holding it.

• Twist loose the fluorescent tube.

• Remount in reversed order.

Replacement of fluorescent tube in light
box

• Loosen the light box by loosening the 3 screws on
the roof holding the light box.

• Pull carefully apart the quick connection and remove
the light box.

• Loosen the 2 screws, underneath the light box,
which holds the end wall of the light box.

• Loosen the end wall.

• Loosen the screw, underneath the box, which holds

the opal sheet.

• Pull gently out the opal sheet.

• Twist loose the fluorescent tube.

• Remount in reversed order.

Replacement of horizontal fluorescent
tube

• When exchanging the horizontal fluorescent tube,
it has to be replaced by a fluorescent tube with a
protective film.

Replacement of mains cable

• Loosen the lower front (see replacement of
thermostat)

• Loosen the 2 screws holding the mains cable.

• Loosen the mains cable from the plinth.

• Fasten one thread or similar in the mains cable (to

simplify the reassemble).

• Pull out the mains cable from the back of the cabinet.

• Fix the thread in the new mains cable.

• Pull the thread from the front of the cabinet.

• Remount in reversed order.

Replacement of condenser fan

• Loosen the lower front (see replacement of
thermostat).

• Loosen the compressor by loosening the 3-spring
pins.

• Lift the compressor carefully a little outward.

• Loosen the fan (4 screws).

• Loosen the cable from the plinth.

• Remove the fan.

• Remount in reversed order.

36 23 199-01 (F) 3