TOHATSU VC52AS User manual

O W N E R’S
M A N UA L
VC52AS
VC72AS
PORTABLE
FIRE PUMP
No.003-12054-3
5-4, Azusawa 3-Chome, Itabashi-Ku
Tokyo 174-0051, Japan
Phone: [phone]
VC52AS
VC72AS
PORTABLE
FIRE PUMP
No.003-12054-3
OW N E R’S
M A N UA L
O W N E R ’ S M A N U A L VC52AS / VC72AS No.003-12054-3
⑥ -1_VC52AS

Copyright © 2020 Tohatsu Corporation. All rights reserved. No part of this manual
may be reproduced or transmitted in any from or by any means without the express
written permission of Tohatsu Corporation.

APPLICATIONS
OF THIS FIRE PUMP
USAGE
TOHATSU fire pumps “VC52AS, VC72AS” are manufactured for use in firefighting
operations.
These portable fire pumps are intended only for firefighting activities in collaboration
with general public fire extinguishing equipment.
Using it for other applications is regarded as being used for improper purposes.
The manufacturer of these fire pumps bears no responsibility for any damages that may
result from modification of the fire pump without prior permission from the
manufacture, improper use of the fire pump, or use of the fire pump for applications
other than those stated above.
Note that the use of these fire pumps for applications other than those stated above
can result in personal injury or damage to the equipment.
Using the fire pump within the range of intended uses implies that the user should
follow the instructions provided by the manufacturer relevant to operation, servicing
and maintenance.

Intended people
All persons who operate, service or maintain the fire pump must read and understand
the following items:
・Owner’s manual
・Safety-related instructions on the pump and the other parts such as the battery.
・The other owner’s manuals, such as battery charger.
The portable f ire pump should be operated by only persons who received training
as operators of fire engines along with each country’s (region’s) regulations.
The range of personal responsibility and supervision must be strictly defined by the
user.
If a person does not have adequate professional knowledge required for his/her
assignment, he/she must undergo relevant training or receive appropriate instructions
from an individual who is actually knowledgeable in operation of the fire pump.
A person who does not have enough knowledge is not permitted to operate the fire
pump.
When using the fire pump, conditions under which an explosion may occur are not
considered.
Keep this manual in a safe place for future reference.
Operators of this fire pump must always refer to all the relevant
manuals in order to avoid errors, personal injuries, and
equipment damage when operating the portable fire pump,
and to maintain faultless operation.
Arrange owner’s manual so that operators can refer to them
where they operate the fire pump.
CAUTION

INTRODUCTION
Thank you for purchasing the TOHATSU Fire Pump.
This fire pump has passed a range of quality assurance standards.
Owner’s manual
The portable fire pump complies with relevant laws and regulations.
The manual includes a description for operation and maintenance. Before using this
fire pump, be sure to read and understand the manual thoroughly.
Engine operation
This manual also includes a description for operation and maintenance of the engine.
・The manual is an important item that goes with your portable fire
pump.
・This manual should accompany this fire pump if sold to another
person.
NOTE

Before using this fire pump, write down the serial number in the following boxes. It will
be useful in the case of asking about servicing, repairs and genuine parts.
Serial Number
The pump serial number (identification number) is marked on the pump casing.
VC52AS
VC72AS

DANGER
WARNING
GENERAL SAFETY INFORMATION
Overview
Before operating the TOHATSU fire pump thoroughly
read this manual to understand the proper
operating procedures including “DANGER”,
“WARNING”, “CAUTION” and “NOTE”.
These notices are designed to bring attention to
very important information necessary to ensure
safe, trouble free operation.
Warning sign
Meaning
This sign is used for safety-related instructions in
this manual.
Be sure to follow all safety-related instructions,
otherwise, personal injury may occur.
Signal words
･Failure to observe will result in severe personal injury or
death.
･Failure to observe could result in severe personal injury or
death.
･Failure to observe could result in personal injury or property
damage.
・This instruction provides special information to facilitate the use or maintenance of
the pump or to clarify important points.
・For attaching position of the warning label, refer to the “CONTENT 3. LABELS”.
・Warning labels should be read clearly at any time.
If the display of the warning label becomes difficult to be read, it was almost
come off, you must replace paste immediately.
Safety-related instructions and warning signs
Read and follow the safety-related instructions described in this manual and all
warning signs on the portable fire pump thoroughly.
Always keep the warning signs in a legible condition. If any warning sign becomes
illegible or detached, replace it immediately.
CAUTION

Transporting the portable fire pump
・ Retractable handle is folding
type.
・ Do not put hand or finger
between top of retractable handle
and bracket.
・ When transporting the portable
fire pump, assign one person per
handle.
・ Also, when you transport the
portable fire pump, it should be
transported holding the handle
firmly.
・ There is a risk of injury to the leg by
fall.
Durability of protection
When you purchase a new pump, it is placed in
packing box and protected.
Storage of pump after transportation
Keep the pump away from high humidity, and place
it on a horizontal plane.
Disposal of packing box
Dispose the packing box by following the
environmental laws.
Noise
・Wear proper hearing protection
during operation.
Exhaust gas
Fatal hazard from carbon monoxide (CO) poisoning
Exhaust gas emitted from the engine contains carbon monoxide (CO)
etc. that may seriously affect human health.
Do not operate the engine in a room, car, warehouse, tunnel or other
closed locations that have poor ventilation.
CAUTION
CAUTION

Safety devices
Before operating the portable fire pump, be sure to check that all
the safety devices have been installed in the appropriate positions.
Before removing the safety devices, turn the main switch off.
After protective devices (such as the muffler guard)
have been disassembled as part of servicing and
maintenance work, immediately install them back to
their original locations, making sure that they are in
safe and secure condition.
Check the portable fire pump visually and
functionally on a regular basis.
If you find any faulty device or equipment, remove
it immediately, and repair or replace it, if necessary.
Failure to do so may cause an accident.
After it has been repaired or replaced, make sure
that it functions correctly.
Protective clothing, Protective equipment
During fire extinguishing training or regular
firefighting services, wear normal protective
clothing and equipment to protect your body.
・Fireproof protective clothing
・Fireproof helmet
・Fireproof protective gloves
・Fireproof protective boots

Service, Maintenance
Servicing and maintenance of this fire pump must be carried out by
o n l y t h e persons who have professional knowledge, who are
familiar with the device, and who understand laws and regulations
regarding safety and accident prevention.
Before starting maintenance work, turn the main switch off to stop
the engine.
Disconnect the negative terminal of the battery.
Before starting maintenance work, securely place the portable fire
pump on the ground.
In the case of just after stopping the engine, do not touch the exhaust
pipe, the muffler and the other engine parts until these parts will be
cold enough. These parts could be very hot and will cause severe burns.
Electrical equipment
Only expert electricians or trained staff members
should handle electrical equipment.
When disconnecting the cable from the battery,
disconnect the negative (-) cable first.
When connecting the cable to the battery, be sure
to connect the positive (+) cable first. After that,
connect the negative (-) cable.
Do not place any metal on the top of or around the
battery. Doing so may cause a short circuit.
Use a fuse with the same specifications as the original
one when replacing it. Using a fuse that has a
greater capacity than the rated value may damage
the equipment.
Check the electrical equipment of the fire pump on
a regular basis.

Battery
Follow any safety-related instructions shown on the
battery.
The battery can generate flammable hydrogen gas
that may cause an explosion.
Do not charge the battery in closed location.
Do not smoke around the battery.
The battery electrolyte is caustic and may cause
personal injuries.
・ Always wear protective clothing.
・ Always wear protective gloves.
・ Always wear protective glasses.
・ Do not tilt the battery. Doing so may cause the
battery electrolyte to leak out from the vent hole.
Handling of fuel
Exercise care when handling fuel. Failure to do so
may cause fire.
Do not bring any flames near fuel. Stop the engine
before refueling. Do not smoke while refueling fuel.
Do not refill fuel in an enclosed room. Doing so may
cause an explosion caused by fuel fumes.
If fuel spills, wipe it with a cloth or other material,
and dispose of it according to relevant laws and
regulations.
Disposal
Dispose of disused batteries according to relevant
laws and regulations.

Genuine parts
When replacing parts for servicing and maintenance
of portable fire pumps, be sure to use only Tohatsu
genuine parts.
If genuine Tohatsu parts and accessories are not
used, it may adversely affect the functioning and
safety of the fire pump. Use genuine Tohatsu parts
only.
Tohatsu bears no responsibility for any personal
injuries or equipment damage that may result from
use of parts or accessories obtained from outside
sources.
Environmental protection measures
Dispose of oil, fuel, batteries, etc. according to
relevant environmental laws.
Do not dump waste into the ground, water, or
sewerage.
Store the fuel only in the specified container.
When disposing of parts, follow the correct disposal
procedure.
Water-prohibiting substance
Do not discharge water to water-prohibited
substance.
Use of water
Do not pump combustible liquids, chemical or
caustic liquids.

CONTENTS
1. SPECIFICATIONS……..……..….…...…..……….….……….…………..………1
2. OPERATION DEVICE……….….…..………………….…...…..…….…………5
3. LABELS……..….….……….………...…………...………...….…………….….……7
4. OPERATING PRECAUTIONS…………....…........………...……....…..…8
5. DESCRIPTION OF DEVICES……..…....……....….….….…..……….…..10
6. PREPARATION FOR OPERATION……………….…...………….…..…21
7. USE OF OPERATION PANEL…………..………...…..……………………26
8. STARTING THE ENGINE…..……….…...…….…….….…….....……....…29
9. PRIME AND DISCHARGE.……..……….….…………….……..….……..34
10. STOPPING THE ENGINE...……….………….…....…...…..…..….….…...41
11. MAINTENANCE AFTER OPERATION……..……..…..…..……..…...42
12. MAINTENANCE IN COLD CONDITION……...…...….………..….…49
13. USE OF ACCESSORY.……..….…..……………..….….…..….….….….…54
14. PERIODICAL INSPECTION…...……..…………..……........….….……..55
15. SERVICE AND MAINTENANCE….....................…......……...….…..58
16. TROUBLESHOOTING….………..….…..….….......……….….…......……69
17. APPENDIX….…..………..…………..…...…...…..……….……….….……...….83
18. TOOL AND STANDARD ACCESSORY……..…………….………..….84
19. WIRING DIAGRAM……………..……………...….…….….……..…….……..85

1
1.
SPECIFICATION
S
Model
VC52AS
VC72AS
Description
Portable
pump
Engine
Manufacturer
TOHATSU CORPORATION
Model
2WT76AM
Type
2
-
stroke, water
-
cooled spark ignition engine
Bore ×Stroke
76 mm × 68 mm (2.99 in × 2.68 in)
Number of Cylinder
2
Piston displacement
617 cm
3
Authorized output
30kW (40.8PS)
Fuel type
Unleaded petrol RON91
Fuel tank capacity
18 L (4.76gal(US))
Fuel
consumption
9 L/h (2.38gal(US)/h)
1
3
L/h (3.
43
gal(US)/h)
Engine oil tank capacity
1.6 L (0.42gal(US))
Ignition
C.D.I.
Spark plug
NGK BPR7HS
-
10
Starting system
Electric starter and Manual starter
Lubrication
Auto mixing
Fuel system
Carburetor
Battery
12V
-
16 Ah/5 h, 12V
-
18 Ah/10 h
Flooding bulb
12V
-
35W

2
1.
SPECIFICATION
S
Model
VC52AS
VC72AS
Primer
Type
Rotary
-
vane vacuum pump (Oil less type)
Max. suction height
Approx. 9 m (29.5 ft)
Pump
Type
Single suction, single
stage, centrifugal pump
Number of delivery outlet
1
Discharge port coupling
BSP thread 2
-
1/2” (male)
JIS fire thread (B
-
9912) 2
-
1/2” (male)
Suction port coupling
BSP thread
4”(male), 4
-
1/2" (
male)
JIS fire thread (B
-
9912), 3” (male), 3
-
1/2” (male)
Pump performance
(Suction height: 3 m / 9.8 ft)
1.45 m
3
/min at 0.5 MPa
380 gal(US)/min at 75 psi
1.43 m
3
/min at 0.7 MPa
375 gal(US)/min at 100 psi
1.15 m
3
/min at 0.7 MPa
300 gal(US)/min at 100 psi
1.02 m
3
/min at 1.0 MPa
265 gal(US)/min at 150 psi
Dimensions and weight
Length×Width×Height
700
× 620 × 730 mm (27.6 × 24.4 × 28.7 in)
Mass (Dry)
85 kg (187 lbs)
Materials
Engine
Crankcase, Cylinder, Cylinder head
Aluminum alloy
Crankshaft
Chromium
-
molybdenum steel
Connecting rod
Chromium
-
molybdenum
steel
Piston
Aluminum alloy
Pump shaft
Chromium
-
molybdenum steel
Muffler
Steel
Pump
Pump casing,
Pump cover Aluminum alloy
Impeller
Aluminum alloy
Shaft seal
Type
Mechanical seal

3
1.
SPECIFICATION
S
Performance Curve
VC52AS
gal(
US)
/min
PERFORMANCE CURVE
Pressure
psi
MPa
Suction hose dia. :3’’ Suction hose length :6m Suction hose height :3m
gal(US)/min
1.0
Discharge
0
.9
0
.8
0
.7
0
.6
0
.5
0
.4
60
80
100
120
140
m
3
/min
0
.6
0
.7
0
.8
0
.9
1.0
1.1
1.2
1.3
1.4
1.5
400
350
300
250
200

4
1.
SPECIFICATION
S
Performance Curve
VC72AS
Suction hose dia. :3’’ Suction hose length :6m Suction hose height :3m
PERFORMANCE CURVE
Pressure
psi
MPa
Discharge
gal(US)/min
m
3
/min
80
100
120
140
1.0
0.9
0
.8
0.7
0
.6
0.5
0
.8
0
.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
450
400
350
300
250

5
2.
OPERATI
O
N DEVICE
Fuel tank cap
Engine oil tank cap
Front cowl
Engine oil tank
Knob (wing screw)
Battery
Discharge valve
(Ball cock type)
Discharge valve handle
Discharge valve
Discharge port
Suction port
Suction hose
coupling (cap)
Pump casing drain cock
Priming lever
Fuel cock
Primer strainer
Spark plug (#1)
Spark plug (#2)
Carrying
Handles(4)
Manual starter
handle
Fuel drain pot
Muffler
Priming outlet
Exhaust pipe
Real
cowl

6
2.
OPERATI
O
N DEVICE
Control panel
Operation panel warning lamps
Pressure gauge for suction
Pressure gauge for discharge
Overheat switch
Operation panel
Monitor
lamps
Hour meter
Main switch
Floodlight projection and battery
charging socket Throttle dial
Fuel Engine oil
Overheat

7
3.
LABEL
WARNING & CAUTION
(Pulley for Vacuum pump)
On the fuel tank ~ Inside of the cowl