Sq Board For Wiring Up To 1000M Conversion - McQuay MWM Service Manual

MCQUAY Service Guide Book

6.5 SQ Board for Wiring up to 1000m Conversion

Comparison of Sequential Main Board SQMB01 Before & After conversion:
Work Indication (WI):
Step 1: Remove Jumper J1 and J2.
Step 2: Solder PART 2051-MAX1483
(IC: MAX1483) to U8.
Before
After
PART: 2051-MAX1483
IC :MAX1483
Enlarge view of SQMB01 after conversion
39
Controller Configuration
U8
J1
J2
IC:MAX1483
J1 removed
J2 removed
Jumper J1 and
J2 removed