Centralized Lubrication Systems
(Automatic lubricator)
YET-C1 / YET-C1P1
Resistance type Automatic lubricator
YET-C2/ YET-C2P2
Piston type automatic Lubricator
Operation Manual
43.1 Scope of application
iSHAN centralized lubrication systems are designed to lubricate ball bearings, flat bearings, flat slideways, circular slideways, linear guides, cams, gears, chains, etc.
iSHAN centralized lubrication systems are suitable for the lubrication of various machines, such as lathes, mills, presses, planner, grinder, etc. It is fit to control different lubricating points at the same time against different machines.
The YET-C lubrication units are suitable for using lubricant with a viscosity range at 30 to 250 cSt during it is running. Only new lubricant shall be used.
YET-C series is controlled by machine controller to operate at the interval. The maximum discharge rate of YET-C1 pump is 200 ml/min.
The maximum discharge rate of YET-C2 pump is 150 ml/min.
The max. discharge pressure for YET-C1 model is 7kgf/cm2, and YET-C2 model is 15kgf/cm2. The lubrication unit contains a pressure relief valve in order to prevent injury, death, or property damage. YET-C2 model operates with piston type distributors by dump valve to release pressure from the main line at the interval time.
For safety, a pressure switch should be mounted to monitor the system. The pressure switch
monitors whether the required pressure build-up occurs in the centralized lubrication system during the pump cycle time and detects any leaking or lubrication connection damage. The level switch is design to monitor the filling level and shut down the lubrication unit when the lubricant is insufficient. To get further safety, the lubrication unit can connect to other monitored device properly to enhance the alarm system.
Warning ! The maximum lubrication time is less than 2 minutes and the minimum intermittent time is more than 3 minutes.
43.2 Basic operation
43.2.1 Safety information
(a) efore installing
!Before installing, read the manual for the correct connection of the power. To prevent chance of serious injury, death or property damage, disconnect the product from main power supply before working on it.
!Comply with the specifications on the rating plate of the motor or the electrical components..
!iSHAN centralized lubrication systems must not be used in other purposes other than lubricating machines.
(b) Before lubricant filling
You must observe the machinery manufacturer's information on the lubricants
to be used in the machinery.
!Use only new oil with a permitted range of oil viscosity from 30 to 250cSt. Warning ! Motor jammed or burned due to high resistance which caused by delivering higher than an oil viscosity of 250cSt, no pressure build-up in centralized lubrication system or insufficient oil delivery caused by pumping lower than an oil viscosity of 30cSt result in centralized lubrication system failure.
! Only clean lubricant may be added. Please never fill with used oil.
!Never fill with chemical substances, water or hazardous fluids.
! All components of the lubrication line system - including reservoir, pipes, hoses, cut-off valves, control valves, fittings, and so on - must be carefully cleaned before installation.
(c) Control panel safety information
!In order to avoid disorders of the control panel, never let it have contact with water or oil.
(d) Faults
! Only qualified, instructed specialists who are authorized by iSHAN may repair lubricators and must use the original spare parts.
43.2.2 Parts of lubrication unit
|
1 Cover |
9 |
Level switch |
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2 Housing |
10 |
Pressure gauge |
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3 Cable gland |
11 |
One way elbow adapter(For C1 model) |
|
4 Display and control panel |
12 |
Dump valve(For C2 model) |
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5 Oil tank cap |
13 |
Rod |
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6 Mounting board |
14 |
Coupling |
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7 Oil inlet filter |
15 |
Pressure relief |
|
8 Reservoir |
16 |
Gear pump |
43.2.3 Label instruction
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Model label |
Wiring instruction |
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Positioned on the right front side of housing |
Positioned inside housing |
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Electric Shock |
Attentions |
Operation Instruction |
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Positioned on the cover of housing |
Positioned on the right front side of tank |
Left side of tank |
43.2.4 Installation
(a) Positioning and mounting
(Fig.2) The lubrication unit is attached to the intended mounting location (3) using appropriate fastening materials (1).The mounting dimensions of fixing holes for 2L are measured between
172 to 180mm ; 3L between 190 to 205mm ; 4L between 230 to 250mm. The installation location should be spaced between 0.6m to 1.7m above the ground. 
(b) Filling Oil
Remove the oil tank cap and fill clean and non-used oil into the tank and add up to the HIGH mark (Fig. 3). Please note that only use permitted range of oil viscosity between 30cSt to 250cSt.
Warning! Motor jammed or burned due to high resistance which caused by delivering higher than an oil viscosity of 250cSt.
(c) Lubrication line connection
Solderless tube connection (double tapered sleeves) can be used. The tube must go through compressed bushing and double tapered sleeve (See Fig. 4). To avoid any leaking during running service time, it should be observed up to 1mmdistance between the tube end to the double sleeve. Insert tube end into counterbored port (3) up to the stop. First tighten compressed bushing finger-tight by hand. Then turn another 11/2 turns.
(d) Wiring and alarm
Warning !! To prevent chance of serious injury, death or property damage, disconnect the product from main power supply before working on it.
Install a fuse between the power supply and the product is strongly recommended!
The electrical circuit diagram of the lubrication unit is affixed inside the unit and can be accessed by removing the cap.
Remove the cap (Fig.5) and inside you can see terminal plate and cable gland nut. Loosen cable gland (Fig.6) and then insert cable through the cable gland hole (Fig.7) to wire up. Fix the cable gland to the housing.
Wiring must comply with the electrical circuit diagram (Fig.8) of the lubrication unit affixed inside the unit. Otherwise, property damage or serious injury can occur.
Level switch and pressure switch are strongly recommended to assemble for fault monitoring and preventing chance of property damage or serious injury. In the model design with a control unit, the electrical connection to the monitoring units such as pressure switches and float switches is established inside the lubrication unit directly to the connectors on the electronic control unit. Depending on the control unit's model design, a signal line for fault monitoring can be run outwards to connect to the machine control unit via a cable fitting mounted on the lubrication unit.
The lubrication unit is design to be controlled by the control unit of the machine. Wire up in accord with the electrical circuit diagram (Fig.8).
After the electrical connection is finished, tighten the cable gland (Fig.9) and fix the cover. Then turn on the power and the power indicator on the display panel will lamp if the electrical connection is correct.
43.3 General information
43.3.1 Operation instruction
The model of YET-C1/YET-C2 is design to pump continuous oil and to be controlled by the control unit of the machine. When the power is switched on, the lubrication unit is controlled by the PLC controller to run lubrication time or to run intermittence time. Check function work or not when finish installation. The power indicator always lamps when the power switches on. The lubrication indicator will lamp when the motor runs.
In the model design of YET-C, if the power supply wired to terminal 2 and 3, it won’t pump when the power is switched on. It will feed oil by pushing FEED key or controlled by the control unit of the machine (Wired to terminal 4) to feed. If lubrication is required at the interval, you may press FEED button to discharge oil.
Disconnect the product from main power supply before working on it. Don’t reboot
in 20sec.
The elbow adapter on the lubrication unit is specified. Never change it by yourself.
The oil outlet for YET-C1 is strongly recommended to assemble with one-way elbow adapter.
The oil outlet for YET-C2 is assembled with straight elbow adapter and is prohibited assembling with one-way elbow adapter
43.3.2 Refilling lubricant
Always keep the oil level between HIGH mark and LOW mark. If the oil level falls below LOW mark, the lubrication unit will send an alarm signal to the control unit of the machine. Remove the cap (Fig. 3) and refill with new clean oil.
Warning! Never use used oil
43.4 Maintenance
iSHAN centralized lubrication system is easy to maintain. The reservoir must be cleaned before installation and in service time so clean the reservoir regularly. If there is any impurity or oil sludge found at the bottom of reservoir or on the strainers of the lubrication unit, disconnect the product from main power supply and take off the reservoir by removing 4 screws on the corners. After the reservoir is cleaned, assemble it to the lubrication unit.
43.5 Faults / Troubleshooting
Warning！！Disconnect the product from main power supply before working on it.
Warning！！Please do not try to repair or disassemble the lubrication unit for the faults not listed below. You should consult and inform iSHAN company at once.
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Fault |
Possible cause |
Recertification |
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Power indicator lamp failed |
Disconnect the product |
Check main power supply |
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Indicator lamp damaged |
Replace new indicator lamp |
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Wrong main power supply results in damage of electrical circuit. |
Check the electrical connection. Check voltage. Return the lubrication unit with faults to iSHAN or iSHAN distributor/agent for verification and repair. |
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Lubrication indicator lamps but no oil discharged |
Insufficient oil |
Refilling |
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Level switch failed |
Replace new level switch |
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Motor or gear pump jammed |
Replace new motor or gear pump |
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Insufficient oil delivery |
Strainer blocked |
Clean strainer |
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Out of permitted range of oil viscosity |
Comply with oil viscosity on the manual. |
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Leaking |
Error installation |
The tube must go through compressed bushing and double tapered sleeve. To avoid any leaking during running service time, it should be observed up to 1mm distance between the tube end to the double sleeve. I |
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Motor runs but doesn’t feed oil. |
Disassemble the adapter of oil outlet from the lubrication unit to see if it discharges oil or not. If yes, centralized lubrication system leaky or break in line. |
Check the lubrication connection |
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Disassemble the adapter of oil outlet from the lubrication unit to see if it discharges oil or not. If not, possible causes is Gear pump jammed Sluggish motor Air in the centralized lubrication system |
Return the lubrication unit with faults to iSHAN or iSHAN distributor/agent for verification and repair. Return the lubrication unit with faults to iSHAN or iSHAN distributor/agent for verification and repair. Vent centralized lubrication system. |
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No pressure build-up in the centralized lubrication system |
Centralized lubrication system leaky or break in line. Motor failed Gear pump jammed. 4 Pressure switch failed |
Check main line. Return the lubrication unit with faults to iSHAN or iSHAN distributor/agent for verification and repair. Return the lubrication unit with faults to iSHAN or iSHAN distributor/agent for verification and repair. Replace new pressure switch. |
43.6 Warranty
iSHAN warrants that it will repair or replace any product manufactured and sold by it which proves to be defective in material or workmanship within a period of one year from the date of original purchase for the clients. Any warranty claim will be considered invalid if the product is not complete or it was disassembled or failure to manual or damage caused by act of God. Any return must consult with iSHAN and obtain iSHAN’s approval before action.
43.7 Technical data
43.7.1 Specification
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YET- C1/C1P1 |
YET- C2/C2P2 |
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Voltage |
110V AC or 220V AC |
110V AC or 220V AC |
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Max. power consumption |
100 W (max.) |
100 W (max.) |
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Permitted viscosity |
30 ~ 250 cSt |
30 ~ 250 cSt |
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Max. discharge (ml/min) |
200 |
150 |
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Max. output pressure (kgf / cm2) |
7 1 |
15 1 |
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Oil outlet dia. (mm) |
Ø4 Ø6 |
Ø4 Ø6 |
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Dimension (H*W*Lmm) |
2L :255 ×150 ×208 3L: 275 ×175 ×227 4L: 273 ×180 ×275 |
2L :255 ×150 ×208 3L: 275 ×175 ×227 4L: 273 ×180 ×275 |
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Reservoir capacity |
2L/3L/4L/6L/8L/20L |
2L/3L/4L/6L/8L/20L |
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Ambient temperature |
0 ~ 50 oC |
0 ~ 50oC |
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Pressure gauge (kgf/cm2) |
15 |
35 |
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Switched pressure range (kgf/cm2) |
2.1↑off |
11.5↑off |
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Current, Pressure switch (Max) |
3A |
3A |
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Current, Level switch (Max) |
0.3A |
0.3A |