NuFlo MC-II Plus Panel Mount, User Manual, Page: 64 / 92

MC-II Plus WP-PM Flow Analyzer
Appendix B
B-2 May 2005
Weatherproof MC-II Plus Flow Analyzer and tighten the two screws on the right hand
side of the enclosure door.
Circuit Assembly Replacement
If the circuit assembly being replaced is still fully or partially functional, record the
volume reading and all calibration data before removing the circuit assembly.
To gain access to the Panel Mount MC-II
Plus Flow Analyzer, remove the screws
attaching the Panel Mount MC-II Plus Flow Analyzer to the panel or rack. To gain
access to the Weatherproof MC-II Plus Flow Analyzer, remove the two screws on
the right hand side of the front door on the enclosure. Remove the two #4 Phillips
head screws holding the battery bracket to the long standoffs. Remove the long
standoffs and #4 nuts attaching the MC-II
Plus Flow Analyzer circuit assembly to the
front panel. Using a small standard blade screwdriver, remove all wiring from
terminal blocks TB1 and TB2 insuring that all wiring that is connected to powered
circuits is insulated with tape to prevent short circuits. Unplug the battery cable from
the circuit assembly. Unplug the keypad ribbon cable from J1 on the circuit
assembly. Remove the original circuit assembly, allowing the keypad ribbon cable
to slip through the slot in the circuit assembly.
Insert the ribbon cable of the keypad through the slot in the replacement circuit
assembly and plug it into J1. Reinstall the long standoffs and #4 nuts. Reconnect
the battery cable to J3 or J4 on the circuit assembly. Reconnect all wiring to
terminal blocks TB1 and TB2. Reinstall the battery bracket to the standoffs using the
#4 Phillips screws. Reinstall the Panel Mount MC-II
Plus Flow Analyzer into the
panel or rack. Close the enclosure door on the Weatherproof MC-II Plus Flow
Analyzer and tighten the two screws on the right hand side of the enclosure door.
Spare Parts List for Panel Mount and Weatherproof MC-II Plus
Quantity Part Number Description
1 101001372 CPU Circuit Assembly
1 100005111 Battery – Lithium – 3.6V
2 101203194 Label Set – Descriptor
Spare Parts List for Weatherproof MC-II Plus Only
Quantity Part Number Description
1 100080050 Cable Assembly – Flowmeter*
1 100002605 Desiccant Packet
* This cable assembly is for Direct Mount MC-II
Plus only. For cable assemblies for
Remote Mount MC-II Plus , determine cable length required and contact NuFlo
Measurement Systems.