Laars MagnaTherm MGH1600, Инструкции по установке и эксплуатации для

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LAARS Heating Systems
Page 60
Menu 4. Login Required
The screen used to Login is similar to the Keyboard
screen.
It may be difficult for some operators to press the
keys on this screen. In this case, use the back of
a plastic pen, or a stylus, or a pencil eraser. (Do
not use sharp metal tools – these may damage the
plastic surface of the screen.)
Each time you press a key, the system will respond
with a beep. If you are entering a password, an
asterisk (*) will appear for each character you enter.
The beeps and asterisks will help you enter the
correct number of characters for your password.
When changing a numerical value, the system
presents a numerical entry screen, as shown below.
Menu 5. Numeric Entry Screen
9.D VerificationProcessforSafety-
Related Parameters
WARNING
Changing safety parameters should only be
conducted by experienced, licensed boiler
operators and mechanics. Hazardous burner
conditions can happen with improper operations
that may result in PROPERTY LOSS,
PHYSICAL INJURY, or DEATH.
The verification process allows the user to confirm
that all the changes made are correct and that there
have not been any inadvertent changes made.
1. When you start to change a parameter that
is related to safety, the system will present a warning
which looks like this:
Menu 6. Parameter Safety Warning
Press OK to continue. The system will ask you
to login before you make a change. (For more
information on logging in, see Section 8.2.)
2. If you make a change in any group that could
affect the safe operation of the unit, the control
system will ask you to “verify” the change before
it is accepted.
3. Once all parameters have been changed, return
to the configure menu. In the lower right hand corner
of the screen you will see ‘VERIFY’ Press VERIFY,
then press BEGIN to start verification.
NOTE: Once you change one of these safety-
related parameters, you must finish the verification
process for the group that includes the parameter,
or the control system will not let the boiler operate.
You can wait to do the verification until you have
changed parameters in other groups, but before you
return the boiler to service, you must complete the
verification process for all groups that
have been changed.
At the end of the verification process, you must
press the Reset button on the front of the controller.
See Figure 41. You have to do this within 30
seconds, or the verification will be cancelled. To
make it easy to reach the Reset button, open the
door on the front of the boiler and slide out the
control panel before beginning the verification.