Use and Care Manual

CA / CT SERIES CAP600
Page 22 of 30 REV E JULY 2014
Low Oil Guard
To help prevent catastrophic damage, FS Curtis provides an option for a Low Oil Guard, which
prevents the unit from starting when the oil level has dropped below the low oil mark on the
sight glass or dipstick, see Fig (12) for proper oil level. FS Curtis’s low oil guard utilizes a
magnetic float switch which is rated for 250VAC maximum and 24VDC maximum, higher
voltages will require a control power transformer.
CAUTION!
A low oil guard is not a substitution for proper maintenance. Continue to perform
regular oil changes at intervals stated in this manual.
WARNING!
Never assume a compressor is safe to work on just because it is not currently
operating. It could restart at any time. Follow all safety precautions outlined in the
Safety Precautions section. Turn off and lockout/tagout the main power disconnect
switch before attempting to perform maintenance on the unit.
1
PARTS LIST - LOW OIL GUARD NEW DESIGN
ITEM # DESCRIPTION QTY PART #
1 10-32 x 1/2 HEX HEAD SCREW 8 VH12CD1
2 LOW OIL SWITCHPLATE COVER 1 CM1074
3 WASHER-ALUMINUM 9/16 X 25/64 X 0.051 1 VH1232
4 LOW OIL SWITCH PLATE 1 CM1072
5 O-RING 1/16" X 2.364 ID DUROMETER 1 VB418
6 LOW OIL MAGNETIC FLOAT 1 CM1073
7
CONNECTION-COMP. STRAIGHT SLEEVE AND
NUT 1/8 X 1/4
1 VA14ACE
8 LOW OIL FLOAT HOUSING 1 CM1070
9 PLUG- SQUARE HEAD-STEEL 1/2" 1 VA01DR
10 NUT - INCLUDED WITH THE FLOAT 2 -
2
3
4
5
6
8
7
9
10
PRE ADJUSTED FLOATS
COMPRESSOR
PRE-ADJUSTED FLOAT
PART NUMBER
E57, E50, E71, D97, C89 CM1069A
D96, C79 CM1069C
E15, C98 CM1069D
Fig (13) Low oil Guard exploded assembly