CHART MVE Series User manual

MVE Chart Tech Tips
February 2014
PRODUCT INFORMATION
Chart MVE Freezer Components
If it is suspected that one of the electrical components is not
operating properly, an evaluation may be in order. Below is a
list of normal resistance values for select items:
Fill Valves (Dual 24VDC): 30 - 35 ohms
Fill Valve (Singular 24VDC): 60 - 70 ohms
Bypass Valve: 60 - 70 ohms
Bypass Sensor:
Room Temp: 1000 - 1100 ohms
Cryogenic Temp: 200 - 300 ohms
Humphrey 3 way: 130 - 145 ohms
Temperature Probes:
Room Temp: 1000 - 1100 ohms
Cryogenic Temp: 200 - 300 ohms
In This Issue
Product Information
Helfpul Hints / FAQs
Accessories
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Receiving Chart MVE Freezer Shipments
Domestically, Chart sells its products with F.O.B. (Free on Board) Origin terms.
Under F.O.B. terms the buyer owns the goods from the time the shipment
leaves the dock and is responsible for filing freight claims for damaged or
shorted goods. Internationally, INCO Terms determine who is responsible for
filing the freight claim.
Regardless of location, please follow the listed steps upon
delivery:
* Check your shipment thoroughly upon receipt for any visible
damage, i.e. dents, tears, punctures, etc.
* Make sure you have the proper number of boxes within the
shipment, i.e. the delivery receipt calls for 6 boxes, but you
only have 5.
* If you receive a shipment that is short or visibly damaged,
make a notation on the carrier's receipt.
* Check for concealed damage after opening or if any damage
to the product is found after the carrier has left, do not throw
anything away, including packaging materials.
* Report damage to the carrier as well as Chart, Inc.
(internationally, this action depends on INCO Terms). Concealed
damage MUST be reported within 15 days of receipt, otherwise
you will void any damage claim.
Chart MVE Series and Cabinet Freezers
Factory ULApproved Lid Switch, Harness, & TEC 3000 Settings
Chart MVE Series and Cabinet Freezers are manufactured with an embedded lid
switch (See Figure 1). There are two wiring harness variations ofthe lid switch.
The standard UL-Approved lid switch harness; and the Optional Fog Clear lid
switch harness.
The factory standard UL lid switch harness allows users to open the lid that will
disengage the lid switch and de-energize the fill valves. This adds ameasure of
safety to enable users to retrieve or insert biological materials and prevents liquid
from splashing onto users. The process stops /interrupts the liquid nitrogen filling
process if the freezer is filling. Once the lid is closed the fill process will continue.
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The functionality of the UL lid switch harness is independent of the TEC 3000
settings. In the Lid Switch Menus the factory sets the "Lid Switch Installed" option to
"NO" (See Figure 2).
Please note: If the freezer is filling and the user has lifted the lid, the TEC 3000 will
continue to display "FILLING", even though the UL lid switch harness has interrupted
the fill (See Figure 3). Once the lid is closed, the fill cycle will continue until the
freezer reaches its high-level fill set point. The maximum fill time can be changed
accordingly (See Figure 4).
Figure 2: Figure 3: Figure 4:
Lid Switch Installed Freezer Filling Max. Fill Time
Menu
MVE's UL listing stipulates that models in these two series must have the lid switch
hardwired in series with the fill valve circuit when it leaves the factory to be
UL compliant.
The above description is classified as a factory UL-Approved Lid Switch Harness
for Chart MVE Series and Cabinet freezers.
HELPFUL HINTS / FAQS
The UL-Approved Harness
Q: How is the UL-Approved harness connected at the factory?
A: Chart's UL-Approved harness is hardwired in series with the fill valve circuit from the
TEC 3000 main harness fill solenoid connector and to the lid switch. When the lid is
opened this electrically opens the fill circuit and interrupts the fill (See Figures 5 & 6).
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Q: Does the user need to do anything with the UL harness?
A: No, for UL-Approved, everything is performed at the factory.
A Lid Switch Harness, P/N 13701586, is included from the factory (See Figure 7).
The harness is connected at pins 3 and 6 to the TEC 3000 main harness as shown
in Figure 7. The other end of the harness is a white male connector labeled "Lid
Switch". This is purposely not connected or secured and is located within the
black plastic wire loom. This "Lid Switch" allows users to add the optional lid
switch alarm and fog clear features.
This harness is used to connect the TEC 3000 to the optional Fog Clear Harness,
P/N 13296488, which adds the optional lid switch alarm and fog clear features.
The Optional Fog Clear Harness: PN 13296488
Q: How can one use the optional TEC 3000 lid open alarm and fog clear features?
A: Purchase the fog clear harness, PN 13296488 (See Figure 8).
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Q: How does the fog clear harness connect?
A: The UL-Approved Harness must be disconnected from the lid
switch and fill solenoid. The Fog Clear Harness connects
directly to the two terminals on the lid switch and to the
terminating end of the lid switch harness. The fill solenoid is
then connected directly to the TEC 3000 main wire harness (See
Figure 9).
Adding the Optional Fog Clear Harness: PN 13296488
(Installation)
To enable the TEC 3000 Lid Switch Alarm and Fog Clear Options
install the wire harness P/N 13296488 as described in Figure 9.
The one end of the Fog Clear Harness connects to the lid switch harness P/N
13701586 (See Figures 7 & 9) and the other end connects to the Lid Switch
terminals (See Figure 9). The UL-Approved Listing Harness is completely removed
from the circuit. The fill solenoid is then connected directly to the main wire
harness (See Figure 9).
Please Note: Converting from the standard UL Lid Switch to
the optional Fog Clear Lid Switch voids the UL compliance
and requires that the UL mark be removed from the freezer.
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Once these connections have been established, proceed to change the Lid
Switch and Fog Clear parameters on the TEC 3000.
TEC 3000 Lid Switch and Fog Clear Parameter Settings
Q: How does one change the parameters in the TEC 3000 to enable the lid switch
and fog clear functionality?
A: Navigate to the Lid Switch menu located in the ADD ON menus.
1.Press SET UP
2.Enter password
3.Press SET UP to navigate to the ADD-ON menus; press Enter
4.Press SET UP to navigate to the LID SWITCH MENUS; press Enter
5.Use the up or down arrow keys to change Lid switch installed to "Yes";
press Enter to save
6.Press SET UP to navigate to the LID OPEN FOG CLEAR, use the up and down
arrow keys to ENABLED, press Enter to save
7.Press SET UP to navigate to the LID OPEN ALARM TIME; change the time to
user preference.
The TEC 3000 settings can alter the capabilities of the fog clear harness. In all cases the
lid switch must be enabled. If the Lid Open Fog Clear is disabled every time the lid is
opened and closed the hot gas bypass time restarts (if the hot gas bypass is enabled) and
the fill time continues from the previous count.
If the Lid Open Fog Clear is enabled the hot gas bypass and fill cycles do not stop;
regardless if the lid is open or closed.
When the lid is first opened in fog clearing mode, the fog clearing process is initiated
for 30 seconds. If the lid is left open for a prolonged period of time and the fog
clearing process needs to be reactivated, one may do so by pressing down until the
lid switch is triggered, holding a few seconds and then releasing.
Figure 9: Optional Fog Clear Wire Harness PN 13296488
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The TEC 3000 will alarm if the freezer lid remains open beyond the
designated lid open time limit. Chart recommends changing the lid open
alarm time to prevent false alarms. The maximum time can be set to 360
minutes.
Please Note: Converting from the standard UL Lid Switch to the
optional Fog Clear Lid Switch voids the UL compliance and requires
that the UL mark be removed from the freezer.
ACCESSORIES
USB TEC COM Kit
The USB TEC COM Kit, P/N 13376947, is a useful tool for downloading
data from both the TEC 2000 and TEC 3000 controllers and may be
ordered through Chart Customer Service.
Chart MVE Freezer Step Latch Rubber Assembly
The part number of the latch (DRAW LATCH RUBBER 2"LG) for
the step assembly of the HE 1500/1800 freezer series freezers is
PN 11891849 and the screws are PN 11891881 (3 are needed
per handle)
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