Summary of Contents for Garnet SeeLevel II 709-RVC PM
Page 1
DATE INSTALLED: _____________________________________________________________ SERIAL NUMBER: _____________________________________________________________ Signal Level Sender Height Black Water Tank Grey Water Tank Fresh Water Tank CANADA Garnet Instruments Garnet US Inc. 286 Kaska Road 5360 Old Granbury Road Sherwood Park, AB T8A 4G7 Granbury, TX 76049...
CHAPTER 1 - OVERVIEW he S L II Tank Monitor represents a massive leap forward in level measurement technology for the Recreational Vehicle industry. The S L™ has a combination of features, accuracy, reliability, and diagnostic capability that have never been available before.
CHAPTER 2 - SYSTEM DESCRIPTION he SeeLeveL consists of a display unit that mounts inside the RV, and sender panels that stick to the side of the holding tank. A single 2 conductor wire is used to connect all the sender panels to the display.
Page 5
With these diagnostic features and the digital nature of the tank level sensing technology, it is almost impossible for the system to indicate an incorrect water level, and in the very unlikely event it does occur, servicing is greatly aided with the diagnostic information.
CHAPTER 3 - OPERATING INSTRUCTIONS he display is the only system component that is accessed by the user. All user input to the display is done using the five buttons along the bottom of the display. Operation of the display is as follows: To read a water or sewer tank level: 1.
Page 7
RV-C Bus Communication: RV-C is a communications protocol based on CAN that is used for control, coordination, and diagnostics. NOTE: Anyone that intends on connecting to the RV-C bus should have a knowledge of the RV-C specification. For more information RV-C protocol go to: http:// www.rv-c.com...
CHAPTER 4 - DISPLAY CALIBRATION To program the LED brightness: 1. If the display is to be used inside the coach, the LED brightness should be low. If it is to be used in the service bay area where sunlight can reach it, the LED brightness should be high. 2.
Page 9
tank, “GrS” if entering the grey tank, or “bLS” if entering the black tank. When this occurs release both buttons. 5. The display will now show “0SE” (0 senders/disabled), “1SE” (one sender) or “2SE” (two senders), based on what is currently programmed into the display.
Page 10
Trip Polarity: While the BLACK button is held down, the display shows “Hi” on the left for a high level alarm or “Lo” for a low level alarm. After the button is released, the left digit shows “H” for a high level alarm which means the alarm turns on (closes) when the fluid level is equal to or higher than the set point, and the alarm is off (open) when the fluid level is below the set point.
Page 11
To check the primary/secondary mode: 1. Press and hold down the BATT button, the display will show the battery voltage. While continuing to hold down the BATT button, press and hold down the BLACK button. Continue to hold down both buttons for about 5 seconds until the display shows “Pri”...
CHAPTER 5 - SENDER PROGRAMMING To program the 710ES or 710SS sender for the correct tank: 1. Since the senders are all connected in parallel to save wiring and to simplify installation, the senders must be programmed so they know which tank they are on. The senders can be programmed for either the fresh, grey, or black tank.
Page 13
2. The senders default to single or bottom operation if the programming is not altered. Consequently, if the sender is for single or bottom operation, nothing further needs to be done to it (beyond programming it for the correct tank). 3.
CHAPTER 6 - INSTALLATION GUIDE (NEW OEM INSTALLATIONS ONLY) 1. Please refer to the “Troubleshooting and Installation Tips” section in Chapter 7 for details on avoiding installation issues. 2. The installation consists of mounting the display inside the RV, cutting and fastening the senders to the sides of the holding tanks, connecting wiring, and programming the display.
Page 17
Tank Sender Options Height Best Resolution Other Acceptable ” - 5” 5” - 7” 7” - 13” 13” - 17” stacked ES 17” - 25” stacked ES stacked SS 25” - 34” stacked SS For single sender applications: The sender ends should be ”...
Page 20
7. To make the senders the right length (assuming they are too long) they will need to cut off with a pair of scissors. The end to be cut is the bottom end, which is the opposite end from the top where the wires come out (see the diagrams). CAUTION: DO NOT cut the sides, and DO NOT cut the 710ES sender shorter than 4 ”.
Page 21
Make sure that the wires from the sender CAUTION: are routed to the RIGHT side of the sender, away from the sender. NEVER route the wires to the left of the sender. If they drape over the sender they could affect the reading. 13.
Page 22
17. Verify that the battery voltage reads correctly. If it appears low, make sure you have good wiring for the 12 volt power and the ground. 18. The common alarm output provides a connection to ground when the alarm is active. The maximum current that can be put through the alarm output is 100mA, be sure to use a relay if more current is required.
CHAPTER 7 - TROUBLESHOOTING GUIDE If a sender or its wiring is not operating properly, the following codes are shown on the display: DISPLAY CODE POSSIBLE CAUSE SOLUTION Open circuit 1. If a sender is unresponsive. See “Wiring Diagnostics” O P n 2.
Page 25
The diagnostics can be used to check the wiring and the senders: 1. If a short circuit is showing, disconnect the senders one at a time at the sender location. If the short circuit indication goes away when a sender is removed, then that sender is bad. If all the senders are removed but a short circuit still shows, then the wiring may be shorted.
Page 26
3. To check the diagnostics, press and hold the button for the tank to be checked, the display will show the level for that tank. 4. While continuing to hold down the button for the tank, press the BATT button. When the display shows ”dIA”, release the buttons, the display will then change to showing the signal power diagnostic.
Page 27
What to do in dual console systems if the two displays do not read the same: 1. For dual display console applications, if the consoles disagree the most likely reason is a bad console ground. Both console grounds, and the sender grounds, must be connected together with ground wiring.
Page 28
“see” the water will ensure proper level calculation and sender operation. 2. The signal strength should be in the 50% range for best performance. If the signal strength is in the 20% range it is indicative of a high resistance in a connector, a bad ground, or improper bonding of the sender to the tank (a possible air gap on one or both sides of the sender).
Page 29
in this case there is no concern with unusable water, just allow for the wall thickness when positioning the sender board (usually ½” to 1” margin from the outer shell). If the sender is positioned above the vent then the maximum reading may be less than 100%.
Page 30
3. Another possibility is a tank wall thickness issue that may occur at the corners or edges of the tank. This has not been a common issue, and the only correction you can make is to move the board slightly lower, away from the thick area. What to do if sender delamination occurs: 1.
Page 31
2. When fastening the display to the panel, make sure that it is centered in the hole and not resting on one edge. 3. Non-conductive mounting spacers are available to help prevent damaging the display. Contact Garnet for further details. How to avoid damaging the display or pump switch due to excessive current: 1.
CHAPTER 8 - SPECIFICATIONS Resolution JS sender: ¼" (6 mm) ES sender: ⅜" (10 mm) SS sender: ½" (13 mm) Accuracy: +/- 8% or better, limited by resolution and tank height and shape. +32 °F to +140 °F (0 °C to + 60 °C) Temperature range: Flexible thick glass epoxy circuit board with conformal Sender materials:...
Alberta, T8A 4G7. Returned warranted items will be repaired or replaced at the discretion of Garnet Instruments. Any Garnet items under the Garnet Warranty Policy that are deemed irreparable by Garnet Instruments will be replaced at no charge or a credit will be issued for that item subject to the customer’s request.
Need help?
Do you have a question about the SeeLevel II 709-RVC PM and is the answer not in the manual?
Questions and answers