Sumake SA-22900 User manual

INSTRUCTION MANUAL
ITEM NO.: SA-22900
SPRING BALANCER (70-90KGS)
SA-221050
SPRING BALANCER (90-105KGS)
SA-221200
SPRING BALANCER (105-120KGS)
SA-22900(1050)(1200)-I-1911A-YM

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1. Safety instruction
Never stand under the spring balancer.
Incorrect use of the spring balancer could cause personal injury.
Observe instruction in the manual and use the balancer correctly.
Never put the spring balancer in fluid.
Don’t twist and rub the cordage with cable during travel.
Don’t load over its capacity.

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Take the tools off while remove the spring balancer, prevent the devise drop down.
Please remove the spring balancer and tools if rest for a long time.
Never remove device while the cable is pulled out. The rope will retract immediately and cause
personal injury
Large angle using will debase the wire rope's life, under ±20° is
better.
Install the safety support cable with suitable length to allow the balancer rotate freely and to stop balancer dropping in case
of original installment failure.

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2. Description
(2.1) Specification
Model No.
Cable Travel (Kg)
Travel (M)
Weight (Kg)
SA-22900
70~90
2.0
22.2
SA-221050
85~105
2.0
23.75
SA-221200
100~120
2.0
27.4
(2.2) Working condition
Application area: indoor
Temperature range: -10°C ~ +50°C
(2.3) Mechanism Feature
Drop prevention device:
To prevent the suspended tool dropping in case of spring(6) broken. The safety pin(33) will pop out to stop
spring set (7)and stuck by safety stopper (15) the drum won't rotate. (see Fig.3)
This device can prevent tool dropping when spring broken.
Drum lock(13): (refer to chapter 6-1 "Drum Lock Operation”)
It could lock the drum per every 1/6 turns.
This mechanism is used to remove the suspended tool (refer to chapter 7) or replace wire cable (refer to
chapter 10).
or replace cable guide set (refer to chapter 12).
3. Installation
Please install the spring balancer correctly. The incorrect installation will cause personal injury or other
equipment damage.
Must attach a safety support cable or chain. In case of hanger failure cause balancer dropping .
(3.1) Prepare the fitting which can bear at least 10 times the maximum capacity of spring balancer.
NOTE : The fitting must be closed to prevent the balancer disengaging or dropping.
(3.2) Check whether the latch(24) is in closed condition after installing
NOTE : The spring balancer can not hit surrounding objects.
(3.3) Check whether the hanger(2) can swing.
NOTE : Please DO NOT fasten the hanger to fitting .
(3.4) Prepare a safety cable or chain that can bear at lease 10 times maximum capacity of spring balancer.
(3.5) Connect an end of safety cable or chain to loop to fix(46) and connect the other end to the stable position.
(3.6) Install the tool which is in capacity of spring balancer on hook.
(3.7) Please adjust the spring tension after installing tool.

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4. Check before using
(4.1) The hanger(2) and hook(8) is stable and turn swivel .
(4.2) The cable set is completed and no any damaged .
(4.3) The stop pin(13) is in open position (see Fig.1) .
(4.4) The appearance is no damage
5. Spring Tension Adjustment
The original tension is in Min. Capacity if the spring tension is set under minimum capacity, the drop
prevention device will operate and the balancer is unable to use.
If the spring tension is set over maximum capacity, the spring balancer can't provide specified cable
travel and the spring life will be shortened .
Please check and adjust the setting before using. Turn worm gear (3) by +, - direction. (see P3. 2-1) and
check gauge(37).
(5.1) Please use wrench to adjust spring tension by turning worm gear. Turn clockwise is to increase (+) spring tension;
turn counter -clockwise is to reduce (-) spring tension and the gauge(37) will show current approximate spring
tension (see Fig.2)
(5.2) Lift the tool to engage the hook and lock it. Never pull the cable down to reach the tool
(5.3) Please re-check spring tension after attaching tool.
(5.4) Check the travel of spring balancer is enough for application or not. If it is not enough, please lower the mounting
height or insert the suitable fitting between hook and suspended tool.

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6. Drum Lock Operation(5)(see Fig.1)
(6.1) Pull the stop pin (No.13) and turn clockwise to lock position And move the tool upward or downward until drum
become locked.
(6.2) Move the tool again to check the drum is locked securely then remove tool from hook.
Please check whether the stop pin is in lock position before removing suspended tool. The cable only
can move around 3~5 mm .(see Fig.1)
If the drum is not in lock position then the cable will retract back immediately and may cause personal
injury.
(6.3) If drum lock activate with cable pull out, please attach suitable weight tool before releasing drum lock.
(6.4) Please pull the stop pin (No.13) up then turn counter-clockwise then place it in open position. (see Fig.1)
Please DO NOT release drum lock if spring balancer unload or the weight of new tool is different with
old tool.
If release it, the cable will retract back immediately or the tool will drop down to cause personal injury.
For safety consideration, please adjust spring tension to fit suspended tool before releasing drum lock.
7. Tool/device Replacement
Method No.1--Replace tool by drum lock (13)
1. According chapter 6 "Drum Lock Operation", operator can remove suspended tool when stop pin in lock potion.
The operator can move tool upward and downward to check drum is locked securely.
If drum is not locked securely, the cable will retract back immediately and cause personal injury.
2. Please check the weight of new tool with all accessories is in capacity of spring balancer before attaching.
3. Please use wrench to adjust spring tension by turning worm gear. Turn clockwise is to increase (+) spring tension;
turn counterclockwise is to reduce (-) spring tension and the gauge will show current approximate spring tension.
(see P5, Fig.2)
4. Please release pin after attaching new tool.(see Fig.1)
Please DO NOT release drum lock before adjusting spring tension, if spring balancer unload or the
weight of new tool is different with old tool. If release it, the cable will retract back immediately or the
tool will drop down to cause personal injury.
5. Please re-adjust the spring tension after attaching new tool .
NOTE : Setting spring tension over maximum capacity may cause spring balancer or cable set damaged
Method No.2--Replace tool without locking drum (5)
Never remove suspended tool when cable is extended. Or the cable will retract back immediately to
cause personal injury.

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1. The cable need to be retracted totally if operator needs to replace suspended tool.
2. Please adjust spring tension according chapter 5 "Spring Tension Adjustment" when attach the new tool.
8. Troubleshooting
Please stop operating if malfunction occur during operation immediately and take the necessary
step to check problem.
Please don't remove suspended tool before finding causes for safety reason. The cable could
retract back immediately and cause personal injury if removing tool without drum lock (13).
(8.1) Usual breakdown issue and causes:
Breakdown issue
Causes
Solution
A. Cable only can work approx. 5mm
Drum lock
Release drum lock
(refer to chapter 6)
B. Cable only can work approx.
100~130mm
Q1:Spring tension set under Min.
Release drop prevention device
(refer to chapter 8-2 Q1-A).
Q2:The drum lock is abnormal
Check drum lock (refer to chapter 8-2
Q2-A).
Q3:The spring broken.
Replace spring set (refer to chapter
11-1)
C. Cable can't pull or retract
The cable slipped off from truck and
stuck between drum and casing.
Make cable back to track.(refer to
chapter 8-3)
*Please contact with distributor if the above problem occur.
Careless repair may cause personal injury or spring balancer damaged, please be careful when
repair.
(8.2) Causes 8-1 B:
Q1. Spring tension is under Min. capacity of balancer that causes drop prevention device engaged.(see Fig.3
A: 1. Please install the spring balancer and hang the tool on hook.
2. Turn the worm gear(3) by clockwise to let tension fitting with suspended tool. Please refer to chapter
2-1.The drop prevention will release and start rising.
Q2: The drum lock is abnormal
A: 1. Please refer to Q1-A2, if the loading fit tension setting but cable still can't work. Then, it affirm the safety
pin(33) is abnormal. Due to cable can't go retract.
2. Make stop pin(13) to lock drum, release all screw(16) (don't dissemble cable guide), and remove safety
stopper (15).
3. The other person hold suspended tool then move stop pin(13) to open position
Operate by two persons for safety reason.
4. Move the tool upward and downward so the safety pin appears in the hole . (see Fig.3)
5. Check whether the safety pin(33) protrude from ring(11) surface. If yes, tape the safety pin by 5mm bar
lightly to let the safety pin inside the ring. (see Fig.3)

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6. Check safety pin function before use: Lock drum by stop pin(5). Adjust the tension below capacity and
check whether the safety pin(33) pop out or not. Meanwhile. adjust the tension back to standard capacity and
check whether the safety pin move back inside the ring or not. If both yes, the balancer are available for use.
If any one is not, take out the spring seat set(7) according
7. To avoid ring(11) loosening, please use low-strength adhesives on thread. After reassembly, make sure the
ring is in a flat end to Chapter 11(sec.2 to 9) to check whether the safety pin spring (12)(44) is broken, remove
the dirt, and then reassemble and check again.(see.P10. 3) with its base.
Q3: The spring broken
A: 1. Refer to Q2-A5, if the safety pin(33) can't be retracted, It means the spring (6) is broken.
2. Refer to chapter 11 (sec.13~18)
If the installation of safety pin(33) and (15) is incorrect, the drop prevention device will not operate
when spring broken. This could cause personal injury or equipment damaged.
(8.3) Causes C :
■ When the cable stuck between drum and casing.
A: 1. To release the wire by pull strongly and quickly if the tool is suspended.
Check the cable is damaged or not after pulling, please replace if damaged. (see Chapter 10)

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2. Please disassembly if the cable can't be release by pulling.
3. Turn stop pin at lock position(see P4 Fig.1), remove E snap (32) from worm gear. (3) (P5 Chapter 2)
4. Turn worm gear (3) counter-clockwise to release spring tension and remove it.
5. Remove the tool from hook then remove spring balancer.
6. Remove cable guide (17&18) from casing. (1)
7. Remove screw (16) then release all safety stopper. (15)
8. Release screw (36) and cover (9) after releasing gauge.(37)
9. Make the cable to the truck of drum (5) Replace cable if damaged .
10. Install the cover (9), worm gear (3) and E snap (32) .
11. Adjust the spring tension and install gauge (37), safety stopper (15), cable guide (17&18).
Please refer Chapter 11"Spring Replacement" (sec.13~18).
9. Inspections
Periodically inspect the spring balancer and replace the Must use the original part to replace.
Inspect the spring balancer per month at least. Repair it if any problem detected. Please short the inspection
interval time if frequently operation or hostile environment.(Fig.4)

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10. Cable Replacement
(10.1) 10-1 Pull the tool downward and extend the cable to Max. travel.
(10.2) According Fig.5, adjust the screw (27) and turn stop pin (3) at lock position, refer to chapter 6-1.P6
(10.3) Move the tool upward and downward to make sure the drum is locked then remove tool from hook.