TriboTec SAO - User Manual

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SAO, SAG CENTRAL LUBRICATION

LUBRICATION PUMP SAO, SAG

APPLICATION

Lubricating pump sets, SAO for lubricating oils, and SAG for soft-grease, are used as a

source of pressurised lubricant, oil or soft-grease, for single-line central lubrication.

Lubricating system circuits are equipped with SKIB and SKIG series single-line metering

valves with SRK manifolds, or with SMIB and SMIG series single-line metering valves

assembled directly to the lubricated point.

Lubricating pumps with built-in control timer are usually used for cyclic, regular lubrication of

a variety of machines and equipment, e.g. textile, food-making, wood-making, shoe-making,

plastic-making, printing, paper-making, wrapping, etc.

SAO and SAG lubricating pumps are available in various execution (see tab.) with lubricant

tank volumes of 3 and 6 litres. The tanks are made of plastic. The nominal flow rate is 200

cm3/min. with maximum working pressure of 24 bar. Electric motors are normally 230V and

115V single phase. For other voltages, consult supplier.

DESCRIPTION

The lubricating pump set includes oil tank and cover. The oil tank is attached to the cover

with 6 bolts and sealed with a flat paper gasket. All parts of the lubricating pump set are

located on the cover. These are: electric motor, clutch, gear pump, suction strainer, outlet

with connecting pipe union, distributor, electric level indicator and the filler with a strainer and

a cap. The control timer and the electric motor are located under a plastic casing which is

securely attached to the cover of the lubricating set. The casing is made from two parts, from

which the upper part is detachable, enabling access to, and adjustment of, the control timer

unit. In the lower part of the casing a push button is installed for a manual start of

intermediate lubrication and 3 indicators. Individual indicators are: green light - voltage

applied, yellow light - set is in operation, red light – low oil level or, if applicable, an alarm of

the pressure switch.

OPERATION

After starting the lubricating pump set, the gear pump, driven by the electric motor, delivers

lubricant into the distributor. The distributor’s working piston is simultaneously moved into its

working position. The passage for the delivered lubrication into the lubricating circuit is thus

opened and all installed dosing devices make their stroke and deliver doses of oil into the

lubricated points. The pressure switch, which is built into the pump, is activated when the

pressure in the lubricating circuit reaches the switching pressure value. At that moment the

electric motor is switched off by an electric signal and the working piston of the distributor

returns to its zero position. With this movement the passage of the lubricant into the

lubricating circuit is closed and through the relief valve pressure decrease occurs in the

lubricating circuit. After pressure relief in the lubricating circuit, the dosing device pistons

return to their starting positions and the lubricating cycle can be repeated. Another purpose

of the pressure switch built into the pump is to control the pressure and a signal is given to

the control timer, to which it is internally connected. With a lubricating pump set with an

external pressure switch located at the end of the of the lubricating circuit, the working cycle

is entirely identical. A requirement for this is that the connection of the pressure

switch to the

control timer is correct. One or several of the above-described working cycles can be in

progress during the pump operation period. It is possible to set an operation period and

pause period, during which the lubricating pump is put out of operation, on the control timer.

The control timer is not equipped with a ROM memory, therefore if the power supply is

interrupted, the set pause period will be cleared.

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Summary

STANDARD VARIANTS AND ELECTRIC WIRING

The TriboTec SAO and SAG lubricating pump sets are designed for single-line central lubrication systems, providing a pressurized supply of oil (SAO) or soft grease (SAG). These pumps are typically integrated into systems utilizing SKIB, SKIG, SMIB, or SMIG series metering valves, either with SRK manifolds or directly at the lubrication points. They are commonly employed for cyclic, regular lubrication in various industrial applications such as textile, food, woodworking, shoemaking, plastic manufacturing, printing, and paper production.

Function Description:

The lubricating pump set consists of an oil tank (3 or 6 liters, made of plastic) and a cover, with all operational components housed within the cover. These components include an electric motor, clutch, gear pump, suction strainer, outlet with connecting pipe union, distributor, electric level indicator, and a filler with a strainer and cap. A plastic casing, securely attached to the cover, encloses the control timer and electric motor. The upper part of this casing is detachable, allowing access for control timer adjustments. The lower part features a push button for manual intermediate lubrication and three indicator lights: green (voltage applied), yellow (set in operation), and red (low oil level or pressure switch alarm).

Upon activation, the electric motor drives the gear pump, which delivers lubricant to the distributor. The distributor's working piston moves into position, opening the passage for lubricant into the circuit. All installed dosing devices then make their stroke, delivering oil to the lubrication points. An internal pressure switch, built into the pump, activates when the circuit pressure reaches a preset switching value. This triggers an electric signal that switches off the motor, and the distributor's working piston returns to its zero position. This movement closes the lubricant passage, and a relief valve reduces pressure in the circuit. Once pressure is relieved, the dosing device pistons return to their starting positions, allowing the lubrication cycle to repeat. The pressure switch also sends a signal to the control timer, to which it is internally connected, enabling pressure monitoring. For pumps with an external pressure switch at the end of the lubricating circuit, the working cycle is identical, provided the pressure switch is correctly connected to the control timer. The control timer allows setting an operation period and a pause period during which the pump is inactive. However, it lacks a ROM memory, so power interruptions will clear the set pause period.

Important Technical Specifications:

Maximum Pressure: 30 bar
Working Pressure: 24 bar
Relief Pressure: Approximately 1 bar
Nominal Flow Rate: 200 cm³/min
Oil Tank Volume: 3 dm³ or 6 dm³
Operation Period: 5 to 90 seconds
Pause Period: 2.5 to 1000 minutes (1 to 21 hours)
Number of Outlets: 1
Connecting Pipe Union: M12x1 mm, for tube outside diameter 6, 8 mm
Electric Motor: 115V - 1.5A, 230V - 0.75A, 50/60 Hz, 0.11 kW
Nominal Voltage of Level Indicator: Oil: 250V AC, 150V DC, 1.5A; Grease: 24V DC, 2A
Lubricant: Oil: min. 50 mm²·s⁻¹; Grease: NLGI 000, 00
Lubricant Temperature: 0 to 80 °C
Working Environment Temperature: 0 to 60 °C
Weight: 3.5 kg

Usage Features:

SAO and SAG pumps are designed for horizontal installation and are attached to a machine or equipment wall using two 6.5 mm diameter anchoring holes. After installation and connection to the lubricating circuit, the oil tank is filled with the specified lubricant. Outlet connections are available for TR 6, TR 8, or other specified diameters.

For pumps equipped with time control, both operation and pause periods can be set over a wide range using three change-over relays (DS 1, DS 2, DS 3) before connecting to power. DS 2 selects the operation period in seconds. DS 3 selects the basic range of pause period values (minutes or hours), and DS 1 refines the exact pause period within that range. For long pause periods, an automatic intermediate lubrication mode can be set via the J 1 bridge. In this mode, an additional lubrication cycle occurs during the pause period to check the pressure switch and lubricant level. If the pump has an internal or external control timer, it is activated by switching over the J 2 bridge.

For SAO 3P2 (SAG 3P2) variants, correct connection of an external pressure switch to the control timer is crucial. Failure to connect it will result in a pressure alarm and automatic pump shutdown after the first operation period. SAO 3P4 (SAG 3P4) pumps include a pressure check; if the lubrication cycle isn't completed during the operation period (indicated by a signal from the pressure switch), a flashing red light signals a pressure alarm. With these variants, the manual push button can be used at any time during the pause period to initiate one or more lubrication cycles according to the set operation period, which then automatically clears the set pause period. The push button for intermediate lubrication should always be used after refilling the tank (when the low level alarm has been lit) or after a lubricating cycle repair following a pressure switch alarm (red light reset).

Maintenance Features:

For proper pump functioning, the lubricating circuit must be perfectly bled, and the piping kept clean, free of burrs and mechanical impurities. This requires careful pipework assembly. Other than regular lubricant refilling and cleaning the suction strainer approximately twice a year, the pump generally requires no other attention or maintenance.

TriboTec SAO Specifications

General

Brand	TriboTec
Model	SAO
Category	Water Pump
Language	English