Diamond PT User manual

Mod: SR2/R6
Production code: 39130621000 / GP20I
07/2018

1
Model:
PT
UK
Technical manual
602-070730

2
UK Contents
Important safety instructions 13
Unpacking and installation 13
Electrical connection 13
Start-up of the cabinet 14
Thermostat 14
Defrosting 15
Maintenance and cleaning 16
Service 16
Disposal 16
Dimensions 41
Technical data 46
Electrical circuit diagramme 47
Refrigeration system 49
Table of parameters 51

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Important safety instructions
1. To obtain full use of the cabinet, we recommend reading this instruction manual.
2. It is the user’s responsibility to operate the appliance in accordance with the instructions
given.
3. Contact your dealer immediately in case of any malfunctions.
4. Place the cabinet in a dry and ventilated place.
5. Keep the cabinet away from strongly heat-emitting sources and do not expose it to direct
sunlight.
6. Always keep in mind that all electrical devices are sources of potential danger.
7. Do not store inflammable material such as thinner, gasoline etc. in the cabinet.
8. We declare that no asbestos nor any CFC are used in the construction.
9. The oil in the compressor does not contain PCB.
Unpacking and installation
Remove the wooden pallet and the packing. External surfaces are supplied with a protection foil,
which must be removed before installation
To ensure correct function it is important that the cabinet is level. If the cabinet is supplied with
legs, these can be adjusted. See fig. 1.1.
Fig. 1.1
Electrical connecting
The cabinet operates on 230 V/50 Hz.
The wall socket should be easily accessible.
All earthing requirements stipulated by the local electricity authorities must be observed. The
cabinet plug and wall socket should then give correct earthing. If in doubt, contact your local
supplier or authorized electrician.
The flexible cord fitted to this appliance has three cores for use with a 3-pin 13-Amp or 3-pin 15-
Amp plug. If a B.S. 1363 (13-Amp) fused plug is used, it should be fitted with a 13-Amp fuse.
UK

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The wires in this mains lead are coloured in accordance with the following code:
Green/Yellow: Earth, Blue: Neutral, Brown: Live.
The main electrical connections must be done by skilled electricians.
Start-up of the cabinet
Before use, we recommend that the cabinet is cleaned, see the section on maintenance and cleaning.
Important !
If the cabinet has been vertically placed during transport, please wait 2 hours before starting up the
cabinet.
Connect the cabinet to a socket and turn on the switch on the control panel, see fig. 1.9.
Fig. 1.9
Thermostat
The thermostat is placed in the control panel, see fig. 2.0.
Fig. 2.0
DP3 DP2 DP1
The thermostat has been pre-set and in most cases it is not necessary to adjust the settings.
When turning on the cabinet the display will show the current temperature in the cabinet.
Indications LED’s:
DP1: Flashing, indicates that a parameter is being changed
Switched on, indicates that the compressor is activated
DP2: Switched on, indicates that defrosting is activated.
DP3: Switched on, indicates that the evaporator fan is activated.

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Keyboard lock:
+ To lock or unlock the keyboard, press these keys simultaneously for about 5 seconds
(to lock the display reads ’Pof’, to unlock the display reads ’Pon’).
Display set temperature:
Press this key and the display will show the set temperature. Press the key again to return to
normal reading
Display evaporator temperature:
Press this key continously to show the evaporator temperature, let go to return to normal
reading.
Set new temperature:
Press this key and the display shows the set temperature.
Press this key to increase the set temperature.
Press this key to lower the set temperature.
Press this key to save the new settings. The display will flash with the new value and will
then return to normal reading.
Changing of parameters:
Press this key continuously for 5 seconds to access the list of parameters. The display will
show the number of the parameter and after 2 seconds the value.
Press this key to increase the value.
Press this key to lower the value.
Press this key to save the new settings. The display will flash with the new value and will
then return to normal reading.
See table of parameters from page 51.
Alarm codes:
PF1 Flashing in the display: indicates that the cabinet sensor is defective.
The cabinet will strive to keep the set temperature until it has been repaired.
PF2 Flashing in the display: indicates that the evaporator sensor is defective.
This does not influence the operation of the cabinet, but should be repaired as soon as
possible.

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Defrosting
The cabinet defrosts automatically with pre-set intervals. If the door to the cabinet is opened or the
contents of the cabinet is changed frequently it may become necessary to defrost the cabinet
manually.
Pressing this key continuously for more than 3 seconds will start a manual defrosting and
then return to normal operation.
Defrosted water runs to a container placed in the compressor compartment and evaporates.
Maintenance and cleaning
Switch the cooler off at the socket.
The cabinet must be periodically cleaned. Clean the external and internal surfaces of the cabinet
with a light soap solution and subsequently wipe dry. External surfaces can be maintained using
steel oil.
Do NOT use cleansers containing chlorine or other harsh cleansers, as these can damage the
stainless steel surfaces and the internal cooling system.
Clean the condenser and the compressor compartment using a vacuum cleaner and a stiff brush.
Do NOT hose the compressor compartment with water as this can cause short circuits and damage
on the electrical parts.
Service
The cooling system is a hermetically sealed system and does not require supervision, only cleaning.
If the cabinet fails to cool, check if the reason is a power cut.
If you cannot locate the reason to the failure of the cabinet, please contact your supplier. Please
inform model and serial number of the cabinet. You can find this information on the rating label
which is placed inside the cabinet in the top right hand side.
Disposal
Disposal of the cabinet must take place in an environmentally correct way. Please note existing
regulation on disposal. There may be special requirements and conditions which must be observed.

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Technical data
Model
Volume
Litres
Dimensions
HxWxD
mm.
Temperature
ºC
Weight
nett
Kgs.
Voltage
V.
Wattage
W.
Energy
Consumption
Kwh/24h
PT920
260
1080-1100x900x700
+2/+10
92
220-240
340
3,2
PT1200
390
1390-1445x1510x800
+2/+10
257
220-240
340
4,7
PT1300
580
1390-1445x2045x800
+2/+10
352
220-240
456
5,4
PT1310
390
1390-1445x2045x800
+2/+10
362
220-240
380
4,7
VK38-150
435x1500x395
+2/+10
31
220-240
340
2,8
VK38-200
435x2000x395
+2/+10
36
220-240
340
4,2

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REK31E (PT920/VK)
Parameter Description REK31
d1 Main Set point 2 ºC
d2 Differential ( hysteresis ) 3 ºC
d3 lower limit of main set point 2 ºC
d4 Upper limit of main set point 10 ºC
d5 Minimum time interval between the disactivation and successive activation on compressor 99sec.
d6 Max temperature alarm differential 50 ºC
d7 Maximum or minimum temperature alarm delay 0
d8 Time interval between defrost cycle 6h
d9 Max defrost cycle time 20min
d12 Real temperature display delay at defrost end 30 min
d14 Dripping time 1min
d19 Offset ? -4 ºC
d22 Unit of measure, 0=C, 1=F 0
d23 Compressor function during o probe failure 2
d24
Compressor on-time during probe failure
10 min
d25 Compressor off-time during by probe failure 10 min
d38 Minimum temperature alarm differential 40 ºC

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REK31ED/REK33 (PT1200/1300)
Parameter Description REK31 REK33
d1 Main Set point 0 ºC 0 ºC
d2 Differential ( hysteresis ) 3 ºC 3 ºC
d3 lower limit of main set point -2 ºC -2 ºC
d4 Upper limit of main set point 10 ºC 10 ºC
d5 Minimum time interval between the disactivation and successive activation on compressor 99sec. 300sec.
d6 Max temperature alarm differential 50 ºC 50 ºC
d7 Maximum or minimum temperature alarm delay 0 99
d8 Time interval between defrost cycle 6h 6h
d9 Max defrost cycle time 20min 20min
d10 Defrost –end temperature 5 ºC 7 ºC
d11 Time interval for supplementary defrost cycles 2min 2min
d12 Real temperature display delay at defrost end 30 min 30 min
d13 Compressor function during defrost 0 0
d14 Dripping time 1min 1min
d15
Fan operating mode during normal controller
1
d16 Fan activation delay at controller startup and after defrost 1min
d17 Fan activation temperature at controller startup and after defrosting 6 ºC
d19 Offset ? -4 ºC -4 ºC
d22 Unit of measure, 0=C, 1=F 0 0
d23 Compressor function during o probe failure 2 2
d24 Compressor on-time during probe failure 10 min 10 min
d25 Compressor off-time during by probe failure 10 min 10 min
d27 Serial line address 0
d34 First defrost cycle after controller startup 1 1
d38 Minimum temperature alarm differential 40 ºC 40 ºC