Gison Machinery GPW-7, GPW-7L Operation Instruction Manual

Air Wet Sander,Polisher

Operation Instruction

GPW-7

GPW-7

GPW-7L

GPW-7L

h t t p : / / w w w . g i s o n . c o m . t w

1

5

8

1

3

2

4

7

6

1

4

8

2

3

6

5

9

Features



Rubber Sleeve

Excellent material of rubber sleeve prevents slippery when operate the tool.
The rubber sleeve will not oxidize when continuous operation and keep hands
away from getting cold.

 Water Shroud

Water guard Water Shroud

GPW-7

GPW-7

GPW-7L

GPW-7L

2

Water Shroud or Water guard for keeping off water prevent users wet their
hands and effect occupational hazards. Fabricators can use water shroud or
water guard depend on their needs. (Additional accessory)

 Handles

R-handle L-Handle

Assemble it in right or left side of tool.



Filling Oil from side handle

Take off sice handle and grease gear lubricating oil directly from the hole.
Fabricators can maintain the machine themselves, save maintenance cost
and extend duration of gear.

 Water Regulator

Water regulator enables users to adjust frequency of water to proper speed
according to various needs of profiling.

 Grip Throttle/Air Regulator

Grip throttle suits continuous operation, speed can be adjusted during
operating.
Air regulator enables users to adjust frequency of air to proper speed
according to various needs of profiling.

 Safety Lever Throttle

Avoid users to press the trigger and start the tool carelessly. Just release the
safety lever and the tool will stop performing immediately. Lever throttle with
safety trigger ensures safety while stop operating, postitive speed control.



Grease Hole



Central Waterfeeding

There is a water exit with 3 holes on the spindle. A large

amount of water will spurt from the holes when profiling slab.

It creates high performance and reduce dust.Operators can

disassemble the water exit and clean it if it is choked up.

3

Water Inlet

Water Regulator

Air Regulator

Quick Joint

Air Inlet

Safety Lever

Air Inlet

Water Inlet

Water Regulator

Air Regulator

Quick Joint

Starting Tool

1. Connect tool to air supply.

2. Connect Water Valve to water hose.

3. GPW-7: Turn on Air Regulator to start tool, adjust frequency

of air to proper speed according to various needs of

profiling.

GPW-7L: Press the Safety Lever and adjust the Air

Regulator to proper free speed.

4. Adjust the Water Regulator to proper water flow.

5. Read “Operating Manual” on next page before performing

the tool.

GPW-7

GPW-7

GPW-7L

GPW-7L

4

Operating Manual

Check the following items prior to operation.

1. Make sure that the work site is in order prior to polishing operations.

2. Select and install a compressor with sufficient capacity for the

recommended air consumption. Use of compressed air with water and
oil may cause rusting and other problems. Before operating the
compressor, drain out the water and oil completely through the drain
port provided at the bottom of the compressor tank.

3. Check the operating air pressure. This polisher is designed for

operation in the optimum air pressure at 90 PSI/6 BARS (Max. air
pressure at 8.0 kgf/cm²). Excessive air pressure levels can cause the
polisher to run at excessively high r.p.m. which may cause damage to
the polisher. Only operate this polisher within the specified air
pressure ranges.

Preparation Before Operation :

WARNING

Make the following preparations prior to commencement of
operation. Complete items 1-5 before connecting the air
hose to the compressor.

1. Attach the grip handle to the body.

2. The polisher body, air hose, water hose and exhaust hose are shipped

disconnected. Connect them according to the instructions below.

(1) Connect the water hose first. Warm up the joints first by running

hot water through the hose to facilitate the connetcion.(Take care
to prevent accidental burns when using hot water.)

(2) Guide the air hose through the air hose nut and advance the end

of the air hose onto the air hose joint. Tighten the nut onto the air
hose joint securely. After the nut is tightened, make sure that the
air hose can not be disconnected.

(3) Attach the exhaust hose onto the end case and clamp it with the

high grip provided.

3. Consider Environment, Health and Safety codes before use. Take

necessary measures to comply with local ordinances when operating

5

this polisher.

(1) The normal operating noise level of this polisher is below 84db.

(2) The normal vibration level of this polisher is <2.5 m/s2.

4. Disc Set-Up

WARNING

Prior to setting up the disc, turn off the air valve to prevent
accidental start up.

Disconnect the air hose from the compressor as a safety
precaution.

Disc setting sequence :

(1) Attach the backer pad or adapter to the spindle. Hand tighten

using the spanner wrench provided.

(2) Attch the disc or polishing accessory.

(3) To remove, follow the reverse sequence.

5. Check the switch function.

Grip the body while holding the switch lock forward. Then push the

switch lever down to turn the tool "on". The switch will shut off
automatically when the lever is released. Turn the air regulator valve
for air flow control from zero to max.

6. Check the switch "off".

Make sure that the switch is off prior to connecting the air hose. If the
switch is on, this may cause accidental start up. Make sure that the
switch is off whenever this tool is on a work bench or resting on other
surfaces.

7. Connection of the air hose from the compressor to the tool.

(1) Check the air hose connection plug for small stone particles and

dust. Foreign Object Damage (FOD) can be caused by these small
stone particles if they get into the tool.

(2) Prior to connecting the air hose, make sure that it is not damaged

and the connecting joint is tightly clamped. Connect the air hose to
the compressor and the tool and make sure they air secure.

8. Test Run

6

CAUTION

˙ Prior to switching on, make sure that the tool is not in

contact with the work piece.

This may damage the work piece or cause personal

injury.

˙ When switching on, the operator should be positioned

away from the exposed portion of the disc.

Before polishing, perform a test run with the polisher. Take care to
ensure that no one is in the immediate area during the test run. During
the test run, make sure that the polisher is running normally and that
the disc is properly set.

Test Run Times



Disc Changes………………………………...More than 3 Minutes

 Start of Operations……………...……………………...1-2 minutes

WARNING

˙ Turn the switch off whenever polishing operations are

interrupted, discs are changed, after completion of
polishing, and when the air hose is to be disconnected.

˙ Use protective glasses while polishing.

˙ Handle your polisher with care. Improper contact with

other materials may cause damage to the disc or to the
polisher. Continuing polishing operations with cracked or
damaged discs is hazardous and could result in physical
injury. If the polisher is dropped, perform a test run before
resuming operation. Make sure that the tool is working
properly before continuing.

7

Grease Hole

Safety Rules



Read all instructions before using this machine. All operated must

be fully trained in its use and aware of these safety rules.



Also lubricate the tool after performance.



Before operating the tool, pour 20cc suitable motor lubricating oil

into Air Inlet. Run the tool for few seconds to allow air to circulate
the oil and well lubricate the cylinder. This will ensure top
performance and maximum durability of tool.



When starting the sander without pad, it exhausts air too soon to

cool the internal parts and generates hear. Always install pad
when performing the sander. The sander can be performed
without pad when lubricating the cylinder.



Supply tool with 90psi (6.3kg/cm²) of clean and dry air. Higher

pressure raises performance beyond the rated capacity of the
tool will shorten the tool’s life because of faster wear and could
cause injury.



Unscrew L-handle Screw and grease every

week for extending durability of gear.



If the machine appears to malfunction

remove from use immediately and arrange

for service and repair.

8

GPW-7 Wet Air Sander/Polisher

PARTS LIST



:Consuming Parts

No.

Part No.

Description

Qty.

No.

Part No.

Description

Qty.

1

7W001

Main Body

1

28

7W019S

Water Cock

1



2

SG009

Oil Seal

1

32

7W042

Air Inlet Nozzle

1

3

OR006

O-Ring

3

33

7W043

Hose Adaptor

1

6

7W020

Water Inlet Tube

1

34

7W021

Rubber Glue

1

7

7W023A
Water Inlet Transfer Post

1



35

B608LLU

Bearing

1

w/brass tube

36

7W027D

Main Shaft (5/8”)

1

8

MC007

Screw

2

7W027E

Main Shaft (M14)



9

B6000LLU

Bearing

2

37

KC003

Locking Key

1

10

7W004

Cylinder Cap

1

38

829055W

Water Exit

1



11

7W006

Rotor

1

39

7W029

Spiral Gear

1



12

7W007

Blade

4



40

B6203LLU

Bearing

1

13

SP014

Spring Pin

2

41

SG011-1

Oil Sealer

1

14

7W005

Cylinder

1

42

7W033

Locking Screw Cap

1

15

7W008

Rear Cylinder Cap

1

45

7W037

3” Sanding Pad

1



16

B626LLU

Bearing

1

7W037-1

4” Sanding Pad

17

7W003

Dust-Proof Plug

1

46

7W040

Cap Screw

1

18

7W011

Locking Cap

1

47

7W038

Handle

1

19

MS010

Screw

1

49

829048

Stop Spanner

1

20

7W012

Locking Ring

1

50

7W019-1

Water Valve

1

21

7W013

Shifting Post

1

51

SPW5

Spring Washer

1

22

OR030

O-Ring

2

53

OR052

O-Ring

1

23

7W014

Air Plunger

1

54

221A10800

Grease Hole

1

24

SP033

Spring Pin

2

55

OR042

O-Ring

1



26

7W016

Shifting Knob

1

56

S079

Spring

1

27

MC008

Locking Screw

1

57

7W002

Spring Cushion

1

※

If you need to order parts, please mark both Parts No. and Description. 2011/1/13

9

GPW-7L Wet Air Sander/Polisher

(Safety Lever)

PARTS LIST



: Consuming Parts

No.

Part No.

Description

Qty.

No.

Part No.

Description

Qty.

1

7W001

Main Body

127

7W029

Spiral Gear

1



2

SG009

Oil Sealer

128

B6203LLU

Bearing

1

3

OR006

O-Ring

329

SG011-1

Oil Sealer

1

4

OR044

O-Ring130

7W033

Locking Screw Cap

1

6

7W020

Water Inlet Tube

1337W037

3” Sanding Pad

1

7

7W023A
Water Inlet Transfer Post

1

7W037-1

4” Sanding Pad

w/brass tube

34

7W040

Cap Screw

1

8

MC007

Screw235

7W038

Side Handle

1



9

B6000LLU

Bearing

236S046

Spring

1

10

7W004

Cylinder Cap

137218L027

Valve Pin

1



11

7W006

Rotor138

OR030

O-Ring

2



12

7W007

Blade439

7WL046

Air Plunger

1

13

SP014

Spring Pin

240DR001

Riveter

1

14

7W005

Cylinder

141P011

Pin

1

15

7W008

Rear Cylinder Cap

142829005A

Throttle Lever

1



16

B626LLU

Bearing

143SP026

Spring Pin

1

17

7W003

Dust-Proof Plug

1447W019S

Water Cock

1

18

7W011

Locking Cap

1487W042

Air Inlet Nozzle

1

19

MS010

Screw149

7W043

Hose Adaptor

1

20

7W012

Locking Ring

150829048

Stop Spanner

1

21

7WL045

Shifting Post

1517W019-1

Water Valve

1

22

7WL044

Rubber Sleeve

153OR052

O-Ring

1



23

B608LLU

Ball Bearing

1

54

221A1080
0

Grease Hole

1

24

7W027D

Main Shaft (5/8”)

1

55

OR042

O-Ring

1

7W027E

Main Shaft (M14)

56

S079

Spring

1

25

KC003

Locking Key

1577W002

Spring Cushion

1

26

829055W

Water Exit

1

※

If you need to order parts, please mark both Parts No. and Description. 2011/1/14

GISON Machinery Co., Ltd.

No.6, Alley 105, Lane 68, Sec. 2, Sinan Road, Wurih,
Taichung 41466, Taiwan

Tel : [phone] Fax : [phone]
E-Mail : [e-mail] / [e-mail]
Web-Site: http://www.gison.com.tw

Printed in Oct. 2017