Specifications

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Control Valves - SMARTLINK

MRV

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combustion systems for industry

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10-30.7-64

E - i - 3/14

50120624-001/

Unit Locking and Passcode Entry

The SMARTLINK

MRV Control Interface is shipped with the lock function disabled and a factory default 4-digit passcode or

“combination” of 0,0,0,0. To lock the unit for the first time and change the default passcode, the lock function must first be enabled

(Command C-5) and the default passcode entered (Command A-7) as described in the first two procedures below. After the lock

function is enabled and the unit is “unlocked”, a new passcode can be entered using Command C-4 as described in the procedure

below. If you forget the passcode, call MAXON for the “master” passcode.

Procedure for Enabling the “Lock” Configuration Setting (Command C-5):

a) If the alarm light is blinking, the lock function is already enabled and the unit is in a “locked” state. Before changing the pass-

code, the unit must be unlocked by entering the current passcode (Command A-7) using the procedure below.

b) If the alarm light is not blinking, select and enter Command C-5, Lock Enable/Disable.

c) After the command is entered, one of the numbered (0-9) lights will be on, indicating the current configuration setting. If the

#1 light is on, the lock function is already enabled and the procedure below can be performed to change the passcode. If the

#0 light is on, the lock function is disabled.

d) To select the #1 setting (Lock Enable), momentarily push the INC/DEC switch in the up position. The #1 light will now be on,

indicating the new setting is selected.

e) Push the ENTER button. The #1 light will turn off indicating the command is complete and the configuration setting is saved.

The unit is now locked and the alarm light will be blinking. To change the current passcode, perform the next two procedures

(Command A-7 & C-4).

Procedure for Entering the Current “Lock” Passcode (Command A-7):

a) Select and enter Command A-7, Unlock Valve Configuration.

b) After the command is entered, the INC/DEC switch is used to select the first passcode digit. The digit selected is indicated

by a numbered light (0-9).

c) Once the first digit of the passcode is selected, push the ENTER button once. The numbered light should momentarily turn

off indicating the entry was accepted.

d) Repeat steps b and c for the 2

, 3

, and 4

passcode digits. If the passcode was entered incorrectly, all the numbered lights

will momentarily flash after entry of the 4

and final passcode digit. If the passcode was correct, the alarm light will stop flash-

ing and will be turned off completely if no other alarms exist.

e) To change the current passcode, perform the procedure (Command C-4) below.

Procedure for Entering a New “Lock” Passcode (Command C-4):

a) To enter a new lock passcode, the lock function must be enabled (Command C-5) and the current passcode must be entered

(i.e. the unit must be “unlocked” using Command A-7). See the two previous procedures if these command entry require-

ments have not been satisfied.

b) Select and enter Command C-4, Enter New Lock Combination.

c) After the command is entered, the INC/DEC switch is used to select the first new passcode digit. The digit selected is indi-

cated by a numbered light (0-9).

d) Once the first new digit of the passcode is selected, push the ENTER button once. The numbered light should momentarily

turn off indicating the entry was accepted. Write down the new digit for later use.

e) Repeat steps c and d for the 2

, 3

, and 4

passcode digits, remembering to write down each passcode digit as it is entered.

f) Verify the new passcode by re-locking the unit (MODE switch to the RUN position and then back to the middle, Command

Entry position), and entering the new passcode using Command A-7 as described in the procedure above.