Service And Maintenance; Remove The Enclosure Cover - ABB LevelMaster 7100 User Manual

8

Service and maintenance

This chapter provides information for performing part replacement and maintenance on the LevelMaster. Common steps to all
part replacements are described first. These steps are then referenced from within the sequence of a particular procedure.
Before performing any part replacement, review the order of the steps carefully to ensure safety and minimize rework.
Hardware changes such as electronics board replacement, float (type and number) change, or internal sensor assembly
replacement require updates to the LevelMaster configuration. Local communication with the unit using MasterLink is required
for reconfiguration after hardware changes.
IMPORTANT NOTE: Batteryless float support requires electronics board part number 2104836-001 and
MasterLink version 2.0 or later. All procedures in this chapter can be performed using MasterLink version 2.0. This
version is backwards-compatible with previous electronics board versions and float types. All MasterLink screens
have online help. Click Help to access additional information at any time if needed.
DANGER - Serious damage to health/risk to life. When performing service or using a laptop in a classified area,
ensure explosive gasses are not present.
Part replacement or maintenance requiring full removal of the unit requires careful planning, taking into consideration the height
of the tank (length of the sensor) and access to the top of the tank. Follow the company safety guidelines required for the site
and determine the appropriate number of field personnel required to perform the removal.
IMPORTANT NOTE: All service and maintenance procedures assume that the LevelMaster is installed in the tank
and is wired. Removing and restoring field wiring is required for all procedures. It is assumed that the original
wiring was done correctly and that the unit was working correctly before service was required.
The following tools may be required in all or some of the procedures included in this section:
Phillips screwdriver
Small slotted screwdriver
24 inch pipe wrench
Wooden blocks or other means to support the sensor on the floor when removed from the tank
Grounding strap

Remove the enclosure cover

All LevelMaster part replacement procedures require removal of the enclosure cover. Removing the cover provides access to
the electronics board for:
Removal of connections (field wiring) to allow for board and internal sensor assembly replacement or for full sensor removal
from the tank
Local communication (direct connection) with the board for configuration update, monitoring or verification
IMPORTANT NOTE: The enclosure may have to be removed and replaced several times during a procedure to
avoid damage to the board or the sensor during removal or movement of the entire unit.
To remove the cover:
1. Remove the power going to the LevelMaster by disconnecting the LevelMaster from the remote controller, flow computer
or independent power source as applicable:
a. If powered from the serial (COM) port on a remote controller or flow computer, disconnect the LevelMaster from that
port.
b. If connected through a barrier board, disconnect the LevelMaster from the barrier board.
LevelMaster 7100 User manual 2105835 Rev AA | 65