53
documentation, local codes, or accepted contractor practices as to the use
and / or type of joint compound or sealer at the connections.
8.
Tighten the body of the switch with the correct size wrench.
9.
Reconnect the wires to the new switch, checking to assure that they are
attached in the same position from which they were removed.
10.
Refill the tank with water, examining the joint between the switch and tank
for any signs of leakage.
11.
Follow the start up procedures on page 17 to return the unit to operation.
Step Controller (Including Replacement of Individual
Component Boards) - Replacement
The solid state step controller serves to control heating by cycling (controlling the time
interval) the activation of the heating elements. Depending on the design of the specific
unit, the step controller is comprised of a number of replaceable boards that can be
individually replaced. Boards are available directly from
CEMLINE CORPORATION
.
Those available are:
n
Mother Board;
n
Black Board - SC End Board;
n
White Boards - SC Heat Stages;
n
Yellow Board - Step Delay; and
n
Green Board - Input Conditioner.
The following procedures detail both changing individual boards as well as replacing the
solid state step controller. If any questions are not clearly addressed, contact
CEMLINE
CORPORATION
for assistance.
t
Solid state component boards are very fragile and subject to damage from any type
of electrical charge - even static electricity. Before touching any board, assure that
the electric power source has been shut off and locked out and all static electricity
has been removed from your body by touching a suitable ground (such as the cold
water inlet piping).
1.
Turn off and lock out the power to the unit.
t
The combination of electricity and water can pose a
very dangerous situation
.
Assure that all power has been
shut off / disconnected and locked out
in an
approved manner, before attempting any installation or maintenance procedures.
Summary of Contents for EHB
Page 41: ...38 ...
Page 62: ...59 9 If no leaks are found follow the startup procedures page 17 to put the unit back on line ...
Page 64: ...61 Appendix A cont d ...
Page 65: ...62 Appendix A cont d ...
Page 68: ...65 ...
