Diamond AP50M-1A Overlapping Refrigeration Unit User Manual
- June 9, 2024
- DIAMOND
Table of Contents
Diamond AP50M-1A Overlapping Refrigeration Unit
STARTING THE MACHINE
Before starting the Block system, make sure of the following
- All locking screws are correctly tightened
- All electrical connections have been made correctly.
- The cold room door is closed so that the door microswitch contact is closed.
Control panel description
Switching on/off
When the machine is energized, the display will read OFF and show the cold
room temperature alternately. To switch the Blocksystem on (off), hold down
the “ON/OFF” key on the front of the machine for more than 5 seconds.
Coldroom temperature adjustment
The temperature ranges within which the Block system can operate are as
follows:
The temperature adjustment setpoint can be accessed directly for display or adjustment purposes.
- Press and release SETPOINT: the display will read “SEt” (the procedure is slightly different if there are alarms in progress; see the machine status display paragraph)
- Press SETPOINT: the green SET LED will switch on and the Setpoint value will be displayed
- Press UP or DOWN to set the new value
- Press SETPOINT or ON/OFF (or wait for the 5-second timeout) to confirm the value (the SET LED will switch off and the display will read “SEt”)
- Press ON/OFF (or wait for the 5-second timeout) to return to the normal display mode
How to vary parameters
Blocksystem operation is governed by parameters that have been stored in the memory of the electronic control unit by the manufacturer (see the parameters table). These factory settings should not be varied unless strictly necessary, and in all cases such operations are only to be carried out by qualified staff. Parameters are not only divided by function, they are also divided according to their security/accessibility
levels
- Level 0 Setpoint parameters direct access (see paragraph 7.3)
- Level 1 frequently used parameters access without password (see paragraph 7.5)
- Level 2 configuration parameters access with password (see paragraph 7.7)
- Parameters can be varied as follows:
- From the keyboard
- Via LAN network (Master/Slave)
- Via Supervision network
How to vary level 1 parameters
- Hold down SET for 5 seconds until the display reads “reg” (adjustment parameters)
- Press UP or DOWN until the required menu appears on the display
- Press SET to access the menu; the code number for the first parameter in the selected menu will appear
- Press UP or DOWN until the required parameter appears
- Press SET to view the value of the parameter
- Press UP or DOWN to set the required value
- Press SET to confirm the value and return to the parameters list; press ON/OFF to confirm the value and return to the menu list
- Press ON/OFF to pass from the parameters list to the menu list
- Press ON/OFF again to exit the editing procedure,
If no key is pressed for more than 15 seconds, any value shown on the display will be stored in the memory for the relevant parameter and there will be a forced exit from the parameters variation procedure.
Machine status display
- Press and release SET: the display will read “SEt” or “AAL” if there are any alarms in progress
- Press UP or DOWN until the required status is displayed
- AAL alarms in progress (if present)
- SEt setpoint
- Pb1 cold room temperature probe value
- Pb2 evaporator temperature probe value
- Pb3 probe 3 value (if present)
- Out relay outputs status
- InP digital inputs status
- Press SET to view the value
- For alarm status, output status or input status, press UP or DOWN to scroll through the alarms in progress, the outputs or the inputs,
- Press SET or ON/OFF (or wait for the 5-second timeout) to return to the status list
- Press ON/OFF (or wait for the 5-second timeout) to return to the normal display mode
For models PTM068Z012, PTM080Z012, PTL060Z012, PTL080Z012, PTM110Z012, PTM140Z012, PTM200Z012, PTL130Z012, PTL1 80Z012, PTL200Z012, PTL260Z012, PTM300Z012, PTM370Z012, PTL350Z012 and PTL450Z012, the dtY,dEt and dSt parameters have the following values (Defrosting by heater):
Note : To release the keypad, hold down “SET” and “ON/OFF” together for
at least 5 seconds.
Note : The “LAn” network parameter only serves in the event of
MASTER/SLAVE or REMOTE CONTROL operation
ADVANCED ELECTRONIC CARD PROGRAMMING FOR BLOCK SYSTEM
Level 2 programming
The procedure for editing level 2 parameters is protected by a password and can be carried out in the following manner: enter the programming mode by holding down the “set” key for at least 7 seconds until the display reads “reg”, which corresponds to the adjustment parameters directory, then proceed as follows:
- Press the “down” key (the display will read “PPS”)
- Press the “set” key (the display will read “PPA”)
- Press the “set” key again (the display will read “0”)
- Press the “up” key until the display reads 22 (the level 2 password)
- Press the “set” key to confirm the password
At this point, using the “up” and “down” keys, you can access all of the electronic card parameters shown in the annexed programming chart. Once you have edited the required parameters, press the “ON/OFF” key twice until the display shows the cold room temperature (or wait for 15 seconds without pressing any keys); this way the edited parameters will be stored to memory.
CAUTION!
THE FOLLOWING SECTION EXPLAINS THE NECESSARY PROCEDURE IN THE EVENT THAT
PARAMETERS ARE EDITED WITHOUT FOLLOWING ANY CRITERIA OR THAT THE CARD SETTINGS
ARE LOST. IN ANY CASE, WE ADVISE THAT YOU FOLLOW THESE STEPS ONLY AFTER THE
APPROVAL OF A RIVACOLD TECHNICAL ENGINEER.
Restoring the factory settings
CAUTION: the following procedure will restore all factory settings for the electronic card. We advise that you only do this if strictly necessary and in any case, that you are assisted by a technical engineer from Rivacold. Cut off the power to the Blocksystem. Press the “set” and “down” keys at the same time, then switch the Block system on again while holding down these keys. Release the keys when the display reads “3”. At this point, the electronic card will restart and its parameters will have returned to those set in the factory. The display will read “Um” for 1 second; it will then show the temperature read by the cold room probe.
PLEASE NOTE: THIS OPERATION RESTORES THE FACTORY SETTINGS FOR A MEDIUM- TEMPERATURE MACHINE APPLICATION (-5/+5°C) WITH “HOT-GAS” DEFROSTING. IF YOU ARE USING AN APPLICATION OTHER THAN “MEDIUM TEMPERATURE” AND/OR A DIFFERENT TYPE OF DEFROSTING (NOT “HOT-GAS”), YOU MUST FOLLOW THE INSTRUCTIONS IN THE FOLLOWING SECTION, AND REFER TO THE “CPP PARAMETER PROGRAMMING CHART”.
Rapid programming according to the application required
Level 2 programming contains a parameter known as “CPP” (to be found in the “cnf” directory) which is used for the rapid programming of parameters according to application and defrosting types (see following chart).
CPP parameter programming chart
- Follow the instructions in paragraph 1 to access level 2 programming
- Press the “up” or “down” keys until you reach the “CnF” directory
- Press the “set” key (the LOC parameter will appear)
- Press the “up” key until you reach the “CPP” parameter
- Press the “set” key (the number 0 will appear)
- Press the “up” key until you reach the number corresponding to the required program
- Then press the “set” key to confirm.
ALARM SIGNALS
In the event of an alarm, the card normally activates the following
- The relevant alarm code is shown on the display. In particular, the control alternates the alarm code and the temperature that is normally shown on the display; if there is more than one alarm, they are displayed in succession, alternated with the temperature
- The alarm LED is switched on
- The alarm relay is triggered.
For some alarms and signals, the LED and/or relay are not triggered. The table below gives a detailed description for each alarm and the relevant actions undertaken. Pressing any button will deactivate the relay (if triggered) and the LED will blink, while the alarm code will remain on the display. The LED will switch off and the alarm code will disappear only when the cause behind it has ceased. The alarm codes are listed in the table below:
Code displayed Description/Control
- There is no reading on the display.
- Network alarms are where, subsequent to programming, the alarm command is communicated from the master to all network devices, in the event that the alarm relay is triggered on the master itself
- During operation, in specific conditions the following signals are displayed:
If the terminal/control connection does not operate correctly at switch on, the terminal display will read “88,8” and the LEDs will all be switched off.
EMERGENCY SYSTEM
PLEASE NOTE: A specialist technical engineer must only perform the operations described here below.
If the electronic control unit breaks down or presents operating anomalies and it is impossible to replace it immediately, there is an EMERGENCY SYSTEM that can be used to maintain the unit in operation until it can be replaced.
To use this system, proceed as follows:
- Cut off power to the Block system
- Remove all jumpers between the L terminals and the common contacts of the card relays (terminals 25-28-33-36-38)
- As shown in the diagram, connect a thermostat between the L terminal, the NO terminals (terminals 32,37) and the NC terminal (terminal 34) of the compressor, defrosting and fan relays (COMP, DEF and FAN)
- Fit a jumper between the L terminal and the NO terminal of the ON/OFF relay (terminal 26 supplying power to the crankcase heaters, door and waste, where fitted).
- Connect the Blocksystem back to the mains power, setting the thermostat to the required temperature.
- PLEASE NOTE: This connection can only be used momentarily. Contact your dealer as soon as possible to replace the malfunctioning card.
- PLEASE NOTE: Defrosting will be cut out for the entire emergency phase and for this reason, we recommend that cold room door opening be kept to a minimum.
- When fitting the new control unit, restore all of the connections described in points 2,3,4 and 5.
Key
- T = Thermostat
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