User's Manual

Modu-Flo
®
System
5-2
42000
R
Table 5-1. Low-Level Switch Assemblies
Part Number Switch Type Switch Rating AC Used On Option
521-001-030 Single-pole, double-throw 15 amps at 115, 230 5- and 12-pint oil L1
or 480 VAC cylindrical reservoirs
521-001-040 Single-pole, double-throw 15 amps at 115, 230 20-pint oil cylindrical L2
or 480 VAC reservoir
521-001-050 Single-pole, double-throw 15 amps at 115, 230 6-pint oil cylindrical L3
or 480 VAC reservoir and all tanks
456-010-171 Single-pole, single-throw 10 watts at 115 VAC 6-pint oil cylindrical L7
reservoir and oil tanks
456-010-172 Single-pole, single-throw 10 watts at 115 VAC 5- and 12-pint oil L5
cylindrical reservoir
456-010-173 Single-pole, single-throw 10 watts at 115 VAC 20 pint oil cylindrical reservoir L6
521-001-110 Single-pole, double-throw 15 amps at 115, 230 All grease cylindrical reservoirs L4
or 480 VAC, 0.5 amp
at 115 VDC, 0.25 amp
at 230 VDC
5.3 OIL TANK AND RESERVOIR 15 AMP
LOW-LEVEL ASSEMBLY MAINTE-
NANCE (OPTIONS L1, L2 and L3)
a. Turn off all electrical power and all air supplies to the
lube system.
b. Remove cover from reservoir (Refer to Section 2.).
c. Unscrew union nut (5, Figure 5-1) from switch adapter
(2).
d. Unscrew switch adapter (2) from switch (1).
e. Remove actuating rod, part of low-level lower assembly
(4), from remaining assembly.
f. Unscrew low-level lower assembly (4) from low-level
adapter (3).
g. Unscrew low-level adapter (3) from the reservoir cover.
Remove low-level adapter (3) from union nut (5).
5.3.4 Assembly of Oil Tank and Reservoir 15 Amp Low-
Level Assemblies.
5.3.4.1 The assembly procedure is as follows:
NOTE
The procedure listed below is based on
installing a new assembly in a tank or reservoir.
If your assembly was removed for repairs, steps
a and b do not apply.
a. Remove cover from reservoir (Refer to Section 2.).
b. Remove 1/4 inch pipe plug from reservoir cover. Insert
low-level adapter (3, Figure 5-1) into union nut (5). Screw
low-level adapter (3) into the reservoir cover and tighten
securely.
WARNING
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
5.3.1 General. Maintenance tips, disassembly and
assembly procedures for low-level options L1, L2 and L3 are
discussed in Paragraphs 5.3.2, 5.3.3 and 5.3.4. A typical low-
level assembly is shown in Figure 5-1 and should be
referred to during this discussion.
5.3.2 Oil Tanks and Reservoir 15 Amp Low-Level
Assembly Maintenance Tips. No maintenance is required
on the low-level assemblies used on oil tanks and reser-
voirs. If the oil level runs down and the assembly fails to
perform as required, the unit may have to be disassembled
to replace a defective switch. Before attempting disassembly,
check all electrical connections to make sure they are secure
and check for any physical obstruction which might be
preventing the float from operating.
5.3.3 Disassembly of Oil Tank and Reservoir 15 Amp
Low-Level Assemblies.
5.3.3.1 The disassembly procedure is as follows: