Vestfrost NFG 309 User manual

Service manual NFG 309
Upright freezer

20-06-2006Page 2
3-star freezer ***
The freezer is approved for long term storage at -18°C
At an ambient temperature of 25˚C and when the thermostat knob
is set at 7 (coldest), the lowest possible temperature of the upright is
-25˚C
Please note: Only 4-star freezers are approved for freezing fresh
food products.
Load label
Maximum load

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NOTE!
Reversing door fitted with door closer - top
Reversing door fitted with door closer - bottom
Mounting of door fitted with door closer - hinged left
Dismounting of lamp screen, fluorescent tube, starting switch and fixture
Access to evaporator, bimetallic thermostat, heating element, and ventilator
Timer, description
Motor compartment, description
Access to electric panel
Vacuum valve, gasket, lock, air channel, thermostat sensor, and ice pack.
Functional description of NFG 309
Wiring diagram 1
Wiring diagram 1A

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Reversing door fitted with door closer - top
1. Open door and loosen 2 screws below the top panel
(Do only loosen)
2. Hereafter, dismantle top panel from the electric panel.
Before proceeding to the next step, you should lie down
the upright on the back plate. This makes reversing the
door easier and more safe!
3. Unscrew two 4 mm screws.
Remember to hold down the hinge,
because this is tightened by the
spring on the door .
4. The hinge will swing out to the left
if the upright is hinged right.
Can following be dismounted.
5. Pull pin free 6. Spring Bush
Remember that all parts are to be used at the opposite side, however,
a new hinge is necessary.
Left top hinge for door closer 0-A1040020303
Right top hinge for door closer
0-A1040020203

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1. Unscrew 2 screws in kick plate
2. Dismantle kick plate from the cabinet and dismount
screw for spring and screw for wire clamp, and pull
plug from connector. Hereafter, pull wire free through
the hole in the kick plate.
3. Dismount bottom hinge
4. Also, dismount lock fittings on the opposite side.
Rotate through 180˚and refit on the opposite side.
Bottom hinge has been
made ready for mounting
on the opposite side, rotate
through 180˚
Reversing door fitted with door closer - bottom

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Mounting door fitted with door closer – hinged left
1. Mount bottom hinge.
2. Mount spring, wire clamp, and plug.
3. Mount wire clamp and kick plate.
4. Push torsion spring and bush into the door, mount pin!
Spring Bush Pin
5. Mount top hinge on pin as shown on the photo.
Push the hinge counter clockwise in order to tighten
the spring.
6. Adjust door and mount top hinge.
Left top hinge for door closer
0-A1040020303

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1. Push lamp screen to the left.
2. Dismantle lamp screen from socket
3. Turn fluorescent tube and dismantle from sockets.
4. Starting switch (electronic). 5. Unscrew 2 screws and pull fixture free.
Dismounting of lamp screen, fluorescent tube, starting switch, and fixture

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Access to evaporator, bimetallic thermostat, heating element, and ventilator
1. Unscrew 2 screws from evaporator casing.
2. Carefully, tip evaporator casing and
remove heat shield (EPS).
3. Location of bimetallic thermostat.
4. Dismount plastic rivets
to access heating
element and evaporator.
Push out pin completely and
dismount entire plastic rivet.
5. Heating element is fitted below the evaporator.
6. Dismount plastic rivets in
evaporator shield and the
ventilator can be accessed.
Switch – door
heat
Switch –
ventilator
Switch -
heating element

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1
2
3
4
5
1
Bimetallic thermostat for evaporator ventilator. Ventilator only operates when the door
is shut. Cuts in at -2˚C and cuts out at +13˚C
Bimetallic thermostat switches off door heat during defrosting.
Cuts in at -2˚C and cuts out at +13˚C
Wire comes back to transformer, door heat (cutting off of current/signal from
bimetallic thermostat)
24 V for ventilator from transformer.
2
Bimetallic thermostat for heating element.
Cuts out current to heating element
at +13˚C and starts the timer.
Wire from internal ventilator (3 in one
frame).
Wire from heating element.
3
4
5
Wires from terminal box bn
rd wh li
rd
li
wh
bk
Description of timer

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Terminal box
Transformer
Wire for timer Mains lead Transformer Compressor
Tray for defrost water
Capacitor and ventilator
Compressor
Refrigerant
Wire from trans-
former to door heat
0-721401001
Wire from transfor-
mer to timer.
0-721400901
0-7038635
0-7038635
Wire from transformer to timer
Door heating, wire
Ventilator, wire
Motor compartment description

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BLACK (4)
RED (6)
BROWN(3)
Thermostat
A. Dismount top panel
B & D. Loosen 4 mm screws
C. Dismount 4 mm screw
E. Dismantle electric panel
F. Remove thermostat knob from
the thermostat
G. Dismantle switch from the panel.
H. Light switch can be removed
from the electric panel from
behind
I. Thermometer can be removed
from the electric panel from
behind.
A
BD
C
E
FG HI
Access to electric panel

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Vacuum valve, gasket, lock, air channel, thermostat sensor, and ice pack.
Vacuum valve
On back plate In inner container Lock Lock fitting Lock mounted
Gasket can be dismantled from profile in aluminium frame
Air channel, thermostat sensor, and ice pack
Clamp retainer together
and pull out channel! Thermostat sensor
Ice pack, mounted.
Dismounted (backside)

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Functional description of NFG 309
Ventilator in evaporator casing (3 in one frame) only operates when the door is closed or
when pressing and holding the door switch. A bimetal thermostat fitted on the evaporator
ensures that the ventilators do not start until the evaporator is cold. App. -2˚C. Therefore, it
is to be anticipated that it takes app. 20 minutes before the ventilators are operating after the
first start-up with a warm upright, also, it can take up to 7 minutes after defrosting has been
carried out.
The ventilators in the motor compartment (4 in one frame) are operating continuously. When
installing the upright it is to be ensured that the heat from the compressor can circulate
unhindered, as described in the instruction manual.
Defrosting is carried out at intervals of 12 hours of compressor operation. When defrosting is
started, the timer cuts out the power for the compressor, cuts in the power for the heating
element and the timer motor stops operating.
The heating element is fitted below the back part of the evaporator. A bimetal thermostat
fitted on the front of the evaporator cuts out the power for the heating element at +13˚C and
defrosting stops. Hereafter, the timer motor starts operating. This occurs after app. 15-30
minutes heat-up depending on the amount of frost on the evaporator. When the timer motor
has operated app. 6 minutes, the compressor starts.
Door heating. A bimetal thermostat fitted on the evaporator ensures that there is no heat in
the glass unless the evaporator is cold. The bimetal thermostat cuts in at -2˚C and cuts out
at +13˚C.

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HSU terminal
1
2
3
A
E
D
1
C3
2
1
2
3
B
4
6
5
1
2
3
Foam led
ye-gn
bu
li
rd bu
bn
ye-gn
bk
Top panel

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0-10.06.047-C
W ire - diagram
bn
Date: 04.05.2006
ye-gn
bu heating - glass door
wh
bu bk rd
rd
bn
bk
bn
bn
bu
bn
bk bu
bk
bk
bn
bu
wh
rd
NFG 309
rd
ye-gn
Mains led
bn
bu
To Nofrost box
heating element ye-dn
To nofrost box
protector
Pos. no. 2
From trafo plate
Fan
Pos. no. 1
bk
bn
ye-gn
wh
bk
li
bu
bu
bk
wh
wh
bk
bk
wh
wh li
li
HSU terminal
bu
ye-gn
bu bn
bk
bn bk
N o frost B ox
41
C
2
3E
5
6
BA
2
3
12
3
1D
2
3
1
Timer
bn
li
rd
bk
Relay
1
1
Timer
wh
3
2
4
Motor
rd
wh
li
4
2
3