Nittoh UP-35RH-NC User manual

ELECTRIC/HYDRAULIC PUMPS
UP-35RH-NC(L)
UP-35RH-NO(L)
UP-35RH-AR(L)
Operation and maintenance manual
NITTOH ZOHKI CO.,LTD.
102,4-10,2-Chome,Kamezawa,Sumida-ku,
Tokyo 130,Japan
Telephone.[phone]
Facsimile. 03-3625-6553

1
INDEX
1. Safety information ---------------------------- 2 page
2. Description of components ------------------ 4
3. Instructions before use ----------------------- 4
4. Operation --------------------------------------- 5
5. Maintenance ------------------------------------ 5
6. Circuits ----------------------------------------- 11
7. Construction drawings ----------------------- 11
8. Parts lists --------------------------------------- 12
9. Trouble shooting guide ----------------------- 14
10. Warranty ---------------------------------------- 15

2
1Safety Information
Read and follow all WARNINGS,CAUTIONS and INSTRUCTIONS included with each
roduct to use the roducts correctly and to avoid ersonal injury or ro erty damage during
system o eration. NITTOH ZOHKI CANN NOT BE RESPONSIBLE FOR DAMAGE OR
INJYRY RESULTING FROM UNSAFE USE OF PRODUCTS, LACK OF MAINTENANSE
OR INCORRECT SYSTEM APPLICATION.
Cautions remarks used in this manual are classified as follows;
DANGER
In case as the result of incorrect use in disregard of this remarks,
imminent danger may ha en, causing the risk of death or serious
injury.
WARNING
In case as the result of incorrect use in disregard of this remarks,
there will be s ossibility that an o erator will die or receive a
serious wound.
CAUTION
In case as the result of incorrect use in disregard of this remarks,
there will be a ossibility that and o erator will receive an injury or
material damage only will ha en.
Cautions when installed
WARNING
■Install a um unit for better balance.
Since the reservoirs of totally enclosed rubber structure are used in this series um s, the
um s can be laced for use in every direction (slant, inversion or er endicular).
However, the um s should be installed on stable laces. When a um is used aslant, fix
it firmly with. Otherwise, it slide down, causing an injury.
■Pre are good working environment.
Make sure all system com onents are rotected form external sources of damage such as
excessive heat, flame, moving machine arts, shar edges, corrosive chemicals.
CAUTION
■Do not use the um in the rain or on such wet or dusty laces.
■Do not ex ose hydraulic system to the direct rays of the summer’s sun.
Be careful with unacce table rise in hydraulic oil tem erature, causing trouble of
hydraulic equi ment.
■In case the um s are used outdoors in the extremely cold regions, exchange oil for
hydraulic oil of ro er viscosity.
Increased viscosity due to dro in oil tem erature, there is the ossibility that equi ment
gets out of order.

3
Caution when used
WARNING
■Take safety measures.
When hydraulic equi ment is o erated, rotect yourself with a ersonal safeguard,
working clothes and shoes, safety s ectacles, etc.
■Always check ressure limitations of hydraulic circuit.
Always confirm in advance that max. ermissible working ressure of a hydraulic um is
lower than the ressure rating of the lowest rated com onent connected in the system.
■Be careful to avoid electric shock.
Do not ull ower lug out with a wet hand. Use a grounded outlet or a lug ada ter with
a grounding attachment in order to rotect the o erator from electric shock. Do not o erate
the um by the side of electric welder or do not lace it on the earthed materials or
equi ment.
CAUTION
■Power su ly is AC220V 50/60Hz single hase.
Make sure your line voltage must be the same as the voltage your um is wired for.
Wrong voltage connection or voltage dro of your line shall cause burning or heating.
Be careful about voltage dro when used with an electric generator.
■When the ower su ly is disconnected, always gras the ower lug and ull it out.
Disconnection by gras ing the cord and ulling it out will cause breaking of a wire or a
short circuit.
■When a su lement cord is used, use only three-wire grounded cords of such sufficient
gauge as 1.25mm
2
or more, its length of max. 10M, in order to avoid voltage dro or
damage of the solenoid valves or electric motors.
S ecifications
Model,No
Electric motor
Hydraulic um
Reservoir
Weight
UP-35RH
-NC(L)
-NO(L)
-AR(L)
Commutator
and o en ty e,
0.35KW 220V
50/60Hz
single hase,
“E” insulation,
2000r m
Max,
Work ressure
MPa
Flow Rate
L/min(50Hz)
Ca acity
1.0L
(2.0L)
Usable
0.8L
(1.6L)
1L
7.5Kg
2L
(8.5Kg)
1
st
stage
2
nd
stage 1
st
stage
2
nd
stage
1 70 2.0 0.2

4
2 Descri tion of com onents
① Carying belt
② Electric motor
③ Carbon brush
④ Tank cover
⑤ Relief valve
⑥ Power supply cord
⑦ Operation cord
⑧ Oil feeding plug
⑨ Delivery port PT3/8
⑩ Pendant switch
3Instructions before use
3-1 Confirmation of all com onents for shi ing damage or oil leakage. If any shi ing
damage is found, notify carrier at once. Shi ing damage is not covered by warranty.
The carrier is res onsible for all re air or re lacement costs resulting from damage in
shi ment.
3-2 Oil feeding lug CAUTION
Oil feeding lugs (Code No.5) are always shut tightly when in shi ment and even in use,
because the tanks are totally enclosed ty e. Use them together with quick cou lers with
check valves.
3-3 Confirmation of your ower su ly WARNING
Power su ly is AC110V or 220V 50/60Hz single hase. Make sure that a grounded
outlet or a lug ada ter with a grounding attachment must be used.
3-4 Confirmation of hydraulic oil WARNING
Always check oil level before o eration, with the connected cylinders fully retracted
(extended if ull cylinders). In case oil is added with cylinders fully extended and then
cylinders are retracted, the returned oil will overflow in the reservoirs, causing
generation of high ressure in the reservoirs, confirm required oil volume in a reservoir
as follows;
①Retract the connected cylinder fully.
②Pull ower lug out.
③Position the um with the tank end down.
④Turn oil feeding lug counter-clockwise and remove it.
⑤Clean an oil gauge of the removed oil feeding lug with
a iece of cloth and ut it in the oil feeding ort again
to check oil level. Be careful with O ring.
⑥It is OK if the reservoir is filled with oil, reaching u to
the u er bound of the oil gauge. Re lenish if oil is
short.(See 5-1)hydraulic oil for the details.
⑦Re lace the oil feeding lug and screw it in by turning
clockwise.

5
4O eration
“UP-35RH-NC” with 2-way normally closed solenoid valve, ressure holding ty e.
1Plug in the um .
2De ress the control “ON” switch to run the motor to advance the cylinder. If the switch
is released, the motor sto s and the lunger remains sto ed for ressure holding.
3To retract the lunger, de ress the “OFF” switch to actuate the normally closed solenoid
valve to return the oil. Note that it is not ossible to sto the lunger on the way at
descending stroke.
“UP-35RH-NO” with 2-way normally o en solenoid valve, auto-return ty e.
1Plug in the um .
2De ress the control “ON” switch to run the motor to actuate the normally o en
solenoid valve, so the oil is delivered to advance the cylinder.
3If the “ON” switch is released, the motor and solenoid valve sto and the oil is drained
to retract the lunger automatically. (The no-marked switch button is not wired and
does not work.)
“UP-35RH-AR” with differential ressure valve, auto-return ty e.
1Plug in the um .
2De ress the control “ON” switch to run the motor to advance the lunger.
3When the “ON” switch is released, the motor sto s and the lunger retracts
automatically. Note that the lunger starts to retract lately one beat after the “ON”
switch is released, because the um is fitted with the differential ressure valve,
instead of a solenoid valve. (The no-marked switch button is not wired and does not
work.)
5 Maintenance
5-1 Hydraulic working oil
①Kind of oil
Use only Nittoh NHO-32 hydraulic oil or an a roved, high-grade oil (ISO #32, viscosity :
32 cSt @40°C) with these um s to romote long um life.
②Oil tem erature
A titude tem erature for use of hydraulic oil is max. 55°C. In case color of the
tem erature seal attached to the tank has changed and indicated “55” as below, it has
ha ened unacce table rise in oil tem erature. Sto working so as to decrease oils
tem erature or tank such a measure as installation of an oil cooler.
Normal condition In case unacce table rise in oil tem erature

6
③ Oil exchange CAUTION
The frequency of oil change will de end u on general working conditions, severity of use
and overall cleanliness. 300 hours (working time) of use or about 3 months is considered
as a standard change interval. Periodically com are sam les oh the reservoir oil with new
oil and ins ects oil color for contaminants or differences.
Remove oil feeding lug and tilt the um to drain out old oil. Be careful that such
im urities as dusts do not enter info the reservoir and new oil is filled u to the gauge
level mark shown on um . Precautions when oil changed are;
●Retract all cylinders fully to the return osition.
●Do not fill with even a small quantity of re lenishment of different kinds of oil.
●Be careful that im urities or foreign matter do not enter info new oil.
④ Others WARNING
When oil enters into a eye, wash it away fully with clean water and consult a doctor
immediately. In case oil enters into the skin of such a wound, wash it away with soa y
water and consult a doctor without delay.
5-2 Pressure and i ing
① Com osition of hydraulic equi ment system WARNING
When a um , high- ressure hose(s), cylinder, valve, cou lings are connected together,
always check roduct limitations regarding ressure ratings and load ca acities. The
system o erating ressure must not exceed the ressure rating of the lowest rated
com onent in the system.
②Pressure gauges
Always install or re are a ressure gauge in-line form the um in order to check
ressure develo ed.
③ Pi ing CAUTION
Use wra ing of Teflon ta e on hoses fittings, valves and cou lers. Make sure all hose
connections are tight-use ro er tools to tighten connections with reference to the
following table. Do not over tighten the connections.
NPT,PT
sizes
Tightening torque N
-
m(kgf
-
m)
1/8
”
13
-
14 (1.3
-
1.4)
1/4
”
30
-
40 (3.0
-
4.0)
3/8
”
60
-
70 (6.0
-
7.0)
1/2
”
100
-
110 (10.0
-
11.0)
Make sure that ta e not shed into hydraulic system, causing damage. Trim loose ends.

7
5-3 High ressure hoses
① Hose installation WARNING
Install hoses, leaving something in reserve, because high- ressure hoses ex and and
contract more or less when full ressure is a lied. Be careful that the hoses do not rub
against other solid materials.
Never allow the hoses to kink, twist, curl or bend so tightly that oil flow within hoses are
blocked or restricted. Do not clam the hoses, causing troubles.
② Hose handling DANGER
Never dro heavy things against the hoses, causing bursting of hoses or serious accident.
Do not subject the hoses to any otential hazard (fire, extreme heat or cold, heavy im act
or shar surfaces), which might ru ture or weaken the hoses. Never ull hoses to move or
lift equi ment connected with hoses.
Should a hose ever burst or ru tured, immediately sto o erating the um before
attem ting to remedy the situation. Never attem t to gras a leaking hose under
ressure with your hands. The force of the esca ing hydraulic fluid could cause serious
and ermanent injury.
5-4 Quick cou lers
① Connections
Make sure that all cou lers are connected ro erly. Incom lete cou ling connections
might cause artial or com lete blockage of oil flow, resulting in trouble of hydraulic
system.
② Handling WARNING
Sto o erating of the um with a hose and cou ler, but without a cylinder. The damaged
cou ler will cause accident. Do not disconnect the cou ler sets, which are under ressure.

8
5-5 Bleeding air from the system CAUTION
Reservoirs of UP-35RH-Series um s are made of totally enclosed rubber tanks and tank
covers. Rubber tanks are filled with oil, making no room for air accumulation. However, in
case a new cylinder and / or new hose is connected with the um , or oil is exchanged, air
may accumulate in the hydraulic system. This air will cause the um not deliver oil or
the cylinder to res ond in an unstable or slow manner. Be careful with air accumulation
in the system. To remove this air;
①Is the tank full with oil?
Make sure that the cylinder is retracted fully (otherwise, re lenishment will become too
much, resulting in damage of the oil tank) and osition the um with the oil tank end
down as shown below. Remove the oil feeding lug and check oil volume. Re lenish oil if
the oil is not full. Re lace the oil feeding lug.
②In case even if the tank is full oil cannot be delivered to develo ressure, stand the um
with the tank end down and do inching o eration (intermittent switching) with the
endant switch about 10 to 11 times.
③In case oil could not be delivered to develo ressure, lace the um horizontally (normal
osition) and ush the rubber bag through the hole (8mm dia.) on the tank cover end with
a rod having a round end, with attention that the rubber bag does not get hurt, and at the
same time do inching o eration with the endant switch.

9
④If the um works normally, air in the hose, cylinder and other system is collected in the
tank and oil must be re lenished.
◎How air may accumulate in the um (rubber tank) when hydraulic equi ment are
connected together with? Always check and confirm before use that the oil tank is full.

10
5-6 Carbon brushes
① Cautions when in use WARNING
Always check the wearing condition of the carbon brushes. When the carbon brushes have
been worn down and exchanging time has come, the motor will sto automatically.
Re lace when a carbon brush has been worn down to 6mm in length as shown below or
working time of the motor is 150 hours or more subject to the conditions of their uses. Use
only NITTOH carbon brushes with these um s to romote long um life. When they
have been worn down, the s ring exerts insufficient ressure to hold brush against the
commutator.
② How to change
Firstly disconnect the ower su ly. Remove rubber ca s on two laces and loosen and
remove fitting screws inside with a screw driver, so the carbon brushes can be taken out.
Re lace with new ones and fix the screws and rubber ca s.
5-7 Relief valve adjustment
①Range of standard ressure adjustment available is form 58.8 to 68.6MPa. Loosen lock
screw on the high- ressure relief valve and turn the adjusting screw a few turns
counter-clockwise to decrease ressure setting to a lower desired ressure. Clockwise
rotation of the adjusting screw will increase ressure. After setting ressure, re lace the
lock screw.
Different kind of a s ring is needed to adjust and set at lower ressure than the standard.
Consult NITTOH authorized distributor.

11
6Circuits
UP
-
35RH
-
NC
Hydraulic Circuit
Electric Circuit
UP
-
35RH
-
NO
Hydraulic Circuit
Electric Circuit
UP
-
35RH
-
AR
Hydraulic Circuit
Electric Circuit
7 Construction drawings

12
8 Parts list
No. Part No. Descri tion
Driving ortion
1-1 2P50296 Base late
1-2 AC0598A0 Oil seal
1-3 4P51380 Eccentric collar
1-4 RNAF223013 Ball bearing
1-5 φ4×28 S ring in
1-6 4P51417 Shaft
1-7 MPU-100 Electric motor
1-8 Gear
1-9 Key
1-10 G-15 G ring
1-11 TLA1512 Ball bearing
1-12 NTB1528 Thrust bearing
1-13 AS1528 Thrust washer
1-14 M6×20 Set screw 1
1-15 4P51474 Blind rubber lug
1-16 4P53078 Leg stay
1-17 M5×10 Fitting bolt
1-18 4P51667 Belt eg
1-19 M5×10 Fitting bolt
1-20 Carbon brush
Pum ortion
2-1 4P51418 Low ressure iston
2-2 4P51419 Rubber washer
2-3 WH13-20 S ring
2-4 4P51738 High ressure iston
2-5 WR5-10 S ring
2-6 φ6 Steel ball
2-7 φ5 Steel ball
2-8 φ5.5 Steel ball
2-9 4P51387A S ring
2-10 WF5-10 S ring
2-11 4P51457 Retainer A
2-12 4P51458 Retainer B
2-13 4P53933 Retainer F
2-14 4P50636 Co er acking
2-15 MSWA-12 Screw 1
2-16 MSW-12 Screw 2
2-17
MSWA-12-6
Screw 3
2-18 PT1/16 Blind lug
2-19 4P51460 Hi ressure blind cover
2-20 4P52529 S acer
2-21 4P54064 Retainer H
Returning ortion
3-1-1 4P51423 Return iston (NCNO)
3-1-2 4P51976 Return iston (AR)
3-2 P-12 O ring
3-3 4P51424 Accum iston
3-4 P-7 O ring
3-5 TM8-15 S ring
3-6 4P51426 Return ush in
3-7 4P51425 Lever
3-8 M4 Lock nut
3-9 M4×20 Adjusting screw
3-10 MS4-40 Fulcrum in
3-11 4P51427 Push in 1
3-12 MYA-6 Oil seal
3-13 E-50 Set ring
3-14 WM13-20 S ring
3-15 φ3×8 S ring in
3-16 4P51476 Push in 2
3-17 WL8-20 S ring
3-18 SUSφ1.5 Sub ush in
3-19 4P51462 Auto return blind lug
3-20 P-3 O ring
3-21 4P54007 Fitting late
3-22
SS-102-553
DC solenoid
3-23 M3×5 Fitting bolt
3-24 4P51803 Pilot needle
3-25 M6 Washer
3-26
AWS12-35
Return s ring
3-27
M6×20
Fitting bolt
3-28
S2VB-10
Rectifier bridge
3-29
M3×8
Fitting bolt
3-30
M3
Nut

13
Relief valve ortion
4-1 Tl8-15 Relief s ring low
4-2
M12×P1.5
Lock nut
4-3 4P51889 Ball receiver
4-4 TB8-15 Relief s ring high
4-5 P-6 O ring
4-6 4P51980 Relief s ring retainer
4-7 M5×5 Lock screw
4-8 φ2.5 Steel ball
4-9 φ1/4 Steel ball
Tank ortion
5-1 3P50374 Rubber tank 1L
5-2 3P50375 Tank cover 1L
5-3 4P51430 Belt eg 1L
5-4 4P53043 Leg stay 1L
5-5 C-30-CS-1 Rubber leg
5-6 4P51520 Oil feeding lug
5-7 P-16 O ring
5-8 4P51431 Filter
5-9 M6×10 Fitting screw
5-10 3P50527 Rubber tank 2L
5-11 3P50528 Tank cover 2L
5-12 4P52413 Belt eg 2L
5-13 4P53114 Leg stay 2L
5-14 M5×10 Fitting screw
5-15 3P50529 S acer
5-16 G-100 O ring
5-17 M6×15 Fitting screw
Electrical arts ortion
6-1 Protection tube
6-2 Pendant control switch
6-3 Power cord
6-4 3P50476 Muffler
6-5 M4×5 Fitting screw
6-6 4P51815 Dashboard 2
6-7 4P51814 Dashboard 1
6-8 Cord cli
6-9 M4×10 Fitting bolt
6-10 St4.2×9.5 Fitting bolt
P-relief valve ortion
7-1 4P50621 Adjusting screw
7-2 4P50624 Valve
7-3 4P51711 Relief valve body
7-4
M12×P1.25
Lock nut
7-5 4P50623 S ring

14
9 Trouble shooting guide
WARNING
●To revent injuries, any re air work or trouble-shooting must be done by qualified ersonel
familiar with this kind of equi ment. Use the ro er gauges and device.
Problems
Possible Causes
Remedies
Motor does not run
WARNING
Disconnect ower
su ly before
disassembly or re air.
(1)
No su ly voltage.
(2) Broken lead wire or defective
ower cord lug.
(3) Defective switches.
(4) Worn carbon brushes.
(5) Defective motor.
(6) Defective remote switch.
(7) Unit is not lugged in.
(1)
Check line volt
age.
(2)Re lace defective artd.
(3)Check switches.
(4)Re lace carbon brushes.
(5)Re air or re lace motor.
(6)Re air or re lace switch.
(7)Plug in unit.
Abnormal noise of
motor.
(1)
Damage or um or motor.
(2) Damage of ball bearings, etc.
(1)
Re air or re lace unit.
(2) Re lace ball bearings.
Motor runs, but
cylinders do not
advance or retract.
(1)
Damage of release valve.
(2)Oil level is too low.
(3)Air in system.
(4)Filter lugged or dirt in um .
(5)Damage of um body.
(6)Damage or out of adjustment
of relief valve.
(1)
Re air or re lace it.
(2) Fill reservoir to 1/2 of level
gauge with all cylinders
retracted.
(3) Bleed the system.
(4) Pum filter should be
cleaned and if necessary,
um should be dismantled
and cleaned.
(5) Re air um .
(6) Re air or readjust as needed.
Cylinders works, but
full ressure is not
built u .
(1)
Damage of release valve.
(2) Air in system.
(3) Damage of um body.
(4) Lowering of set ressure or
damage of relief valve.
(1)
Re air or re lace.
(2)Bleed the system.
(3)Re air um .
(4)Readjustment of set ressure
or re air of relief valve.
Cylinders works, but
their s eed too slow,
artially or erratically.
(1)
Damage of release valve.
(2) Air in system.
(3) Unacce table rise in oil
tem erature.
(4) Damage of um body.
(1)
Re air or re lace.
(2)Bleed the system.
(3)Sto o eration or install oil
cooler. (max. 55℃)
(4) Re air um .
Cylinders do not
retract.
(1)
Damage of release valve.
(2) Damage of return s rings of
cylinders or quick cou lers.
(1)
Re air or re lace.
(2) Re air or re lace s rings or
cou lers.
Oil leaks.
Damage seals, seats or steel
balls.
Re lace them.
Short circuit.
(1)
Damage cords.
(2)Bad insulation of electric
arts.
(1)
Re lace.
(2)Re lace.

15
10 Warranty
9-1 Warranty eriod
It is for one year from urchase.
9-2 Warranty
All NITTOH roducts and arts, with the exce tion mentioned below, are warranted
against defects in materials and workmanshi , which results in damage to roducts and
arts. This warranty shall cover re air and/or re lacement of the roducts or
com onents/ arts free of charge. To qualify for warranty consideration, return the
NITTOH roduct, freight re aid, to a NITTOH factory. Refer to the NITTOH
STANDARD EXPRESS WARRANTY for the details.
9-3 Warranty exce tions
No warranty claim will be acce ted for damage or breakdown arising for any of the
following reasons.
“Abuse or im ro er use, fair wear and tear, faulty or negligent o eration, im ro er
storage, chemical/ electrical influences or climatic or other effects which can not be
related s ecially to faults in manufacture”
No liability is acce ted for acking seals, s rings, and/ or the like, and the following:
◎Alterations or remodeling on the roducts undertaken by the urchasers without any
rior notice and agreement to NITTOH.
◎Severe and very highly frequent use, deviating from roduct s ecifications.
◎Damage due to faulty installation or assembly by urchasers or third arties.
◎Damage from natural disaster.
◎Damage from such accidents as fire, submersion, dro ing, etc.