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Table of Contents

 

Rev. 5/8/2019 

ZLTT MANUAL 

Table of Contents

 

Copyright 2019 Vestil Manufacturing Co. 

Page 13 of 15 

 

 

 

B.  Perform the following inspections at least once per month.  

1.  Oil tank: Check the oil level in the reservoir. Remove the cover from the power unit. Find the white, plastic 

tank. Oil should be within 1 inch of the fill hole. Add oil as needed. See 

Part C

, 

Maintaining the hydraulic 

oil

” for oil specifications.  

2.  Hydraulic hoses: Examine all hoses for damage (cuts, punctures, bulges, etc.), leaks, and loose 

connections. 

3.  Electrical wiring and handheld controller: Check wiring for wear and damage. Make sure that the handheld 

controller is intact. Internal wiring of the controller should not be exposed. Buttons should move freely. 

4.  Pivot points: Lubricate pivot points with bearing grease. Inspect pivot points for severe wear. Make sure the 

metal around pivot points is not cracking, bending, or warping. 

5.  Fasteners: Check all bolts and pins and retaining hardware. Confirm that are connections are sound. 

Tighten loose connections. 

6.  Anchor points: Examine the anchor bolts and the anchoring surface. Bolts should be securely attached to 

the floor. Flooring should not be chipped or broken around the anchors. If anchor points are unsound, the 

table must be moved and reinstalled. 

7.  Frame, legs, tabletop, and side guards: Check for warps, damaged welds, corrosion, and fatigue. Closely 

examine the cylinder brackets. Lubricate cylinder pins with bearing grease. 

8.  Motor & pump: cycle the tabletop to the fully tilted position and back to the home position. Listen for unusual 

sounds as the tabletop cycles. Watch the tabletop to confirm that it tilts smoothly and at a uniform rate. 

9.  Labels: Examine the labels. Each label shown in the 

Labeling diagram

 should be undamaged and readable. 

Replace any label that is damaged or missing. 

 

C. Maintaining the hydraulic oil: 

  Change the oil if it has a milky appearance (indicating the presence of water) darkens, or becomes gritty. Only 

use anti-wear hydraulic oil of viscosity grade 150 SUS at 100°F (ISO 32 at 40°C), such as AW 32 or HO 150 or a 

non-synthetic transmission fluid. Synthetic transmission fluid can be used, but only after slushing the hydraulic 

system with the synthetic fluid before filling the tank. The tank is full when the surface of the oil is within 1 inch of 

the fill hole. 

 

Troubleshooting 

  The following table describes a few issues that might occur with these tilting tables. If your unit experiences a 

problem not described in this guide, tag the unit “Out of Service” and contact the factory for assistance. Do not 

use the table again until it is restored to original condition. 

 

Issue: 

Explanation 

Solution 

1)  I press the LIFT or TILT UP 

button but nothing happens. 

a) Transformer fuse is blown. 

 

b) No supply voltage. 

 

 

c) Limit switch is engaged or 

malfunctioning. See Electric Circuit 

diagrams on 

pages 8

-

9

. 

d) Bad connection in control circuit. 

 

e) Malfunctioning control transformer. 

 

f) Open motor relay coil. 

a) Test with multi-meter. Replace if 

necessary. 

b) Make sure power cord is plugged in. 

Also check fuses, breakers, and 

overloads to determine cause. 

c) Inspect and test switch. Replace if 

defective. 

 

d) Test all parts of circuit with multi-

meter. 

e) Check for 24VAC and replace 

transformer if malfunctioning. 

f.) test with meter, replace if bad. 

2)  Motor runs but table does 

not move. 

g) Motor rotation is backwards. 

 

h) Pump not working. 

 

i) Inadequate volume of hydraulic fluid. 

g) Confirm that motor shaft turns 

counterclockwise. 

h) Replace with manufacturer-approved 

pump. 

i) Bring fluid level to within 1in. of fill hole. 

3) A control button/pedal is 

pressed, motor hums, 

squeals, clatters, or buzzes 

and table does not move. 

j) Pump not working 

 

k) Inadequate power wire (thickness too 

small) leading to excessive voltage drop 

from electrical socket to motor. 

l) [

3-phase systems only

] Motor is 

single-phasing.  

m) Pressure relief valve opening. 

j) Replace with manufacturer approved 

pump. 

k) Check incoming voltage 

while motor 

running

. Correct problem: use shortest, 

thickest power cord to motor. 

l) Determine cause of voltage loss on 

one phase and correct. 

m) Check for structural damage causing 

binding. During operation. Reduce load 

to within rated capacity of table. 

Содержание ZLTT Series

Страница 1: ...ur Technical Service and Parts Department at 260 665 7586 The department can also be contacted online at http www vestilmfg com parts_info htm Table of Contents Specifications 2 Signal Words 2 Hazards...

Страница 2: ...1 6cm 44 111 8cm 48 121 9cm 83 3 4 212 7cm 69 1 4 175 9cm 4 000 lb 1 818 2 kg 2630 lb 1195 5 kg ZLTT 5272 2 48 71 1 2 181 6cm 52 132 1cm 48 121 9cm 83 3 4 212 7cm 77 1 4 196 2cm 2 000 lb 909 1 kg 2756...

Страница 3: ...he machine to support people This table is designed only for material handling Always watch the tabletop carefully as well as the load container while raising and lowering it This crane is designed fo...

Страница 4: ...10 102 Weldment leg assembly left 1 20 64135 Pin roll 3 16 x1 1 4 4 7 99 021 906 001 99 021 901 001 Cylinder hydraulic ram style ZLTT 4452 2 36 2 1 2 x10 ZLTT 4452 4 36 3 x10 2 21 15 112 002 Pin cylin...

Страница 5: ...0 102 Weldment leg assembly left 1 20 64135 Pin roll 3 16 x1 1 4 4 7 99 021 906 001 99 021 901 001 Cylinder hydraulic ram style ZLTT 5252 2 48 2 1 2 x10 ZLTT 5252 4 36 3 x 10 2 21 15 112 002 Pin cylin...

Страница 6: ...ment leg assembly left 1 20 64135 Pin roll 3 16 x1 1 4 4 7 99 021 906 001 99 021 901 001 Cylinder hydraulic ram style ZLTT 4472 2 48 2 1 2 x10 ZLTT 4472 4 48 3 x 10 2 21 15 112 002 Pin cylinder bracke...

Страница 7: ...ment leg assembly left 1 20 64135 Pin roll 3 16 x1 1 4 4 7 99 021 906 001 99 021 901 001 Cylinder hydraulic ram style ZLTT 5272 2 48 2 1 2 x10 ZLTT 5272 4 48 3 x 10 2 21 15 112 002 Pin cylinder bracke...

Страница 8: ...0VAC Single Phase Electric Circuit Diagram 04124019 Rev D NOTE Overcurrent short circuit protection and disconnect must be provided by the end user Control relay base layout top view Control relay bas...

Страница 9: ...he necessary length of the anchor bolts should be determined by the building engineer Drill 1 2 holes into the concrete at the location of each bracket hole to the necessary depth for your anchor bolt...

Страница 10: ...opens a path for fluid to flow back to the reservoir if fluid pressure exceeds 3 000psi The relief valve is a safety feature designed to prevent damage to the hydraulic system that would otherwise be...

Страница 11: ...ut pressing either of the necessary control buttons then the corresponding lowering cartridge valve needs to be cleaned Remove inspect and clean the lowering cartridge valve If the tabletop un tilts o...

Страница 12: ...levated table Describe the motion of the table as it rises as well as how it sounds Tilt the table Take more photographs and again describe the motion and sounds heard as the power unit operates Un ti...

Страница 13: ...oil of viscosity grade 150 SUS at 100 F ISO 32 at 40 C such as AW 32 or HO 150 or a non synthetic transmission fluid Synthetic transmission fluid can be used but only after slushing the hydraulic sys...

Страница 14: ...breakers and overloads to determine cause u Test all parts of circuit with multi meter v Walk around the table and look for items material etc interfering with table movement w Check solenoid with mu...

Страница 15: ...aulic pumps motor controllers and cylinders It also covers defects in original parts that wear under normal usage conditions wearing parts such as bearings hoses wheels seals brushes and batteries How...

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