Jackson 24P-NSU, Service Manual, Page: 16 / 33

THERMOSTAT ADJUSTMENT
The thermostat can be adjusted by turning screw #1 (see picture) on the thermostat control box cover.
(Remember the present setting. In case the problems are elsewhere In the control circuit.) A CW rotation is
used to obtain a lower temperature setting and a CCW rotation is used to obtain a higher temperature setting.
A 1
/4
turn of screw #1 changes the temperature approximately 15 F. If screw #1 Is turned all the way to its
stop in either direction, adjust screw #2 as follows.
Note: Do not touch the screw sealed with red paint. When adjusting screw #2, power should be
disconnected during adjustment.
Set screw #1 so that it can be turned equal distances in either direction, then:
— if screw #1 stopped while turning in CW direction, turn screw #2 in CW direction, slowly and only 1
/8
of a
turn or less per complete cycle of the unit.
— If screw #1 stopped while turning in CCW direction, turn screw #2 in CCW direction, slowly and only
1
/4
of a turn or less per complete cycle of the unit:
Three-fourths of a turn will bring the thermostat to approximately the same setting obtained where screw #1
stopped. Check the present temperature setting before attempting any further adjustments. Use screw #1 for
any further adjustments.
Making large moves In adjusting may cause misalignment, thus increasing chances that further adjustment-
cannot be made and thermostat will have to be replaced.
12
Thermostat
P/N 0170018 Rinse
0170023 Wash
SCREW #1