SETUP
CONDITIONS REQUIRING DISASSEMBLY
You
may need to open up the meter for one of the following reasons:
1. To check or change the 115 or 230 V ac power jumpers.
2. To install or remove jumpers on the main board.
DISASSEMBLY
Disconnect the power supply before proceeding.
To
remove and access the main board, follow these steps:
1. Disconnect the main power from the meter.
2. Remove the rear case cover.
3. Lift the rear of the main board upwards and slide out of the
case.
Caution: The meter has no power-on switch, so it will be in operation
as soon you apply power. If you power off/on the meter, or perform a hard
reset (press the RESET button twice), the meter shows "RST",
followed by "PROC".
RATING/PRODUCT
LABEL
This label is located on top of the meter housing.
MAIN BOARD POWER JUMPERS
Important: If
you want to change the Factory preset jumpers, do the following steps;
otherwise go to section 6.5.
Disconnect the
power from the unit before proceeding.
1.
Remove the main board from the case. Refer to Section 6.2.
2. Locate the solder jumpers W1, W2, and W3 (located near the edge
of the main board alongside the transformer).
3. If your power requirement is 115 V ac, solder jumpers W1 and
W3 should be wired, but jumper W2 should not. If your power requirement
is 230 Vac, solder jumper W2 should be wired, but jumpers W1 and W3
should not.
NOTE: W4 jumper is not used.
Figure
6-1 shows the W1 through W3 jumpers on the main board.
Figure 6-1. Main Board Power Jumpers
(W1, W2, W3)
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Figure
6-2 shows the main board jumpers.
DISPLAY BOARD
Figure
6-2
Main Board Jumper Positions
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S2 jumpers are for
sensor break indications (refer to Table 6-1)
S3 jumpers are used for the following (refer to Table
6-1):
* To enable or disable the front panel push-buttons
* To allow for an extremely low resistance load for analog output
* To disable the MENU button
* To perform calibration procedure
Test pins TP1 - TP11 are for testing purposes. Do not
use as reading errors may result.
S3
Jumper Functions Table 6-1
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JUMPER
|
DESCRIPTION
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S2-A
|
Install
for negative sensor break (i.e., refrigeration). |
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S2-B
|
Install
for positive sensor break (i.e., heating). |
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S2-C
|
Removed.
Not used. |
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S2-D
|
Removed.
Not used. |
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S3-A
|
Install
to enable front panel push-buttons. Remove to disable all front
panel push-buttons |
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S3-B
|
Removed.
Install for meter calibration. |
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S3-C
|
Normally
removed. Install for analog voltage output when load has less than
1 Kohm impedance. Care should be taken when installing this jumper. |
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S3-D
|
Removed.
Not used. |
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S3-E
|
If
installed without S3-B, the MENU button locks out.
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S4-A
|
Removed.
Not used. |
1.
Cut a hole in your panel, as shown in Figure 6-3.
2.
Insert the meter into the hole. Be sure the front bezel is flush
to the panel.
3. Proceed to Section 7 to connect your sensor input and
main power.
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PANEL
MOUNTING
Figure
6-3. Meter - Exploded View
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