Hitachi HIGHLY WHP08750VCDNC9AU User manual

HitachiHighly
Rollkolbenverdichter
Rotary Compressors
Spezifikation
Installation Manual
WHP08750VCDNC9AU
RIES GmbH, Rudolf-Diesel-Str. 10, D 64569 Nauheim, GERMANY
Phone: [phone], Fax: [phone], Email: [email protected], Website: www.ries-gmbh.de
R 410A - R 134a - R 513A
23,2 cm3/rev
1000 - 7200 min-1
DC /BLDC

Table of Contents
1. WHP08750VCDNC9AU Specifications ———————1～4
1.Scope of application
2.Compressor specifications
3.Motor parameters
4.General characteristics
5.Parts and drawings list
2. Standards for the use of special
compressors for heat pump water heaters ———5～14
3. Basis and rules for acceptance ——————————— 15
1.Acceptance basis
2. Acceptance rules
4. Drawings
5. modify the experience
————————16～32
————————Appendix

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：1/32
1. SCOPE
This specification is applied to SHANGHAI HIGHLY
Heat pump water heater compressor.
2. SPECIFICATION OF THE MODEL
Item Spec
2.1 Model Type WHP08750VCDNC9AU
2.2 Power source input to HITACHI
inverter （SHEC
220V
Rated voltage
Rated frequency
Phase
50 Hz
1phase
2.3 Output 2200W(at R410A 3300rpm)
2.4 Application Heat pump water heater
2.5 Refrigerant R410A/R134a/*R513A
2.6 Displacement 23.2ml/rev
2.7 Allowable frequency range 1000～7200min-1
2.8 Oil HAF68D1C or equivalent 630±20ml
2.9 Allowable amount of refrigerant
charge
Below 2100g
2.10 Compressor cooling Forced air
2.11 Hermetic Terminal 1/4”quick connect type
2.12 Space volume of inner case
1145cm3
2.13 Compressor weight 13.6 kg incl. Oil
2.14 Motor Type
Insulation class
Direct current brushless motor E class
R410A R134a *R513A
2.15 Nominal Heating Capacity (see *)
8750 4100 4212
2.16 Compressor Rated Input (see *) 2150 900 932
2.17 COP
4.05 4.56 4.52

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：2/32
Item Spec
2.18 Current （ A ） 12/4.9/4.9（compressor input）
2.19 Noise （dB（A））(see appendix) Below 78
2.20 Vibration （m/s2）（see appendix） Below 5
2.21 Natural frequencies of the compressor 13Hz/20Hz/21Hz
（Should try to avoid or pass quickly）
2.22 Capacity measuring conditions and
noise & vibration measuring condition
Rotational speed
Evaporating temp.
Condensing temp.
Liquid temp.
Ambient temp.
Return gas temp.
Wind speed
3300min-1
7.2 ℃
54.4℃
46.1℃
35.0℃
35.0℃
2 m/s
*.Nominal heating capacity equals refrigerant capacity adding motor input. Refrigerant capacity and
motor input are measured by secondary. Refrigerant calorimeter Methods of GB5773 by Shanghai Hitachi
Electrical Appliances Co.,Ltd. Allowable heating capacity should be more than 95% of the nominal
heating capacity and allowable motor input should be less than 107% of nominal motor input.
3. MOTOR PARAMETER
Item Spec 数 Explanation
3.1 Rotor Pole（Pole） 4 ——
3.2 Rated Frequency Range
（Hz） 30-240
Electrical Frequency，Relating to
VDCmax of Inverter
3.3 Demagnetizing
Curren（A） 32.0A
Peak Current，at 120℃，-5%
Demagnetizing Rate
3.4 Inductance Ld（mH） Sheet 1 ——
3.5 Inductance Lq（mH） q Sheet 1 ——

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：3/32
Item Spec explanation
3.6 Winding Resistance（Ω）
（20℃） 0.856 Line-to-Line
3.7 Voltage Constant
（Vrms/krpm） 33.50 Line-to-Line
3.8 Torque Constant
（N·m/Arms） 0.52 Torque/Current
3.9 Inertia （Kg·m2） 0.000361 ——
3.10 Flux Φa（Wb） 0.1310
φ(Per Phase，Peak)=
3.11 Magnet Material NdFeB
1
4. CHARACTERISTICS
4.1The surface of the compressor is painted to black, without obvious flaw ,impact scar, paint peel
off, rust and so on.
4.2. Indication
Compressor model type, manufacturing data are clearly indicated on the surface of compressor。
4.3. Residual moisture 250mg MAX
4.4. Residual impurities 150mg MAX
（RMS） 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0
Lq(mH) 9.55 9.27 8.77 8.34 8.00 7.72 7.49 7.29 7.12 6.97 6.83 6.70
Ld(mH) 5.69 5.61 5.53 5.44 5.35 5.27 5.20 5.12 5.05 4.97 4.90 4.82

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：4/32
5 PARTS AND DRAWING LIST
PARTS NAME QTY/SET DRAWING NO. REMARKS
Compressor 1 4CYCL0051 Dimensioned
sketch
Mounting
Parts
Rubber grommet
Bolt
Nut
3
--
--
4CYC00754
4CYC00791
M8
*
*
Electrical
Parts
Thermostat
Terminal cover
Gasket
Nut
Rubber washer
Sleeve
1
1
1
1
1
1
4CYC01036
4CYC00988
4CYC01047
3CYC00004
4CYC00174
4CYC01042
4CYC01039
1
2
3
Lead routing
Pressure guarantee
Chart
Oil level datum
Notes for rotational
speed change
Performance curse
Appendix
*. Out of supply, for reference.

DC INVERTER COMPRESSOR CRITERIA
PAGE：5/32
COMPRESSOR CRITERIA
1 Strictly observe the specification
The compressor should be used in specifications written in this “compressor specification” and
not be used in specifications outside it. Moreover, accessories should be specified parts used in
specified way, service must use specified parts too. The main circuit must link up
with fuse or breaker.
2 Source voltage
Specified inverter is linked up with compressor terminals . Applied voltage of this inverter
should be voltage specified in this “compressor specification”. Alternating voltage should
never be applied on terminals (for example：commercial alternating voltage of
1φ100V,200V,3φ200V).This is because that if applied alternating current the direct
current motor will demagnetize.
3 Operating voltage range
The compressor should be operated in the range of rated voltage 10% , under standard condition
and overload condition of rated frequency (applied voltage to inverter).
It must be satisfied with item 5, 6, 7 and the overload condition should not be continuous.
But the standard condition and overload condition mentioned here refer to condition that specified
in GB/T 7725. (The standard condition refers to the rating cooling condition and the overload
condition refers to the maximum operating condition.)
4 Operating temperatures and pressures
The operating temperatures and pressures of a compressor should be within the range shown in
the table 1.

DC INVERTER COMPRESSOR CRITERIA
PAGE：6/32
Table 1
Item Operating Envelope
Refrigerant R410A
（see graph 1a）
R134a
（see graph 1b）
Discharge pressure
MPa{kgf/cm2G}
4.2MPa {41.8} MAX
（condensing temperature : 65℃） In the
range mentioned in chart 2(a).
2.63MPa {25.85} MAX
（condensing temperature : 80℃） In the
range mentioned in chart 2(b).
Suction Pressure
MPa{kgf/cm2G}
0.272~1.652 MPa {1.8 ~ 15.5kgf/cm2G}
It can also be 0.101～0.272 MPa{0 ~
1.8kgf/cm2G} when in transition , but
should not be used when it is less than
0.101MPa{0kgf/cm2G}.
0.106~ 0.665MPa{0.08~ 5.78kgf/cm2G}
It can also be 0.101 ~ 0.106MPa {0 ~
0.08kgf/cm2G}when in transition , but
should not be used when it is less than
0.101MPa{0kgf/cm2G}.
Compressor case bottom temp 99℃or below and 6 degrees higher than condensing temperature
Motor winding temp. St andard load condition： overload condition ：
Rated voltage:： 105℃ MAX
R.Voltage±10%:
R.Voltage±10%:
120℃MAX
Accumulator temp Higher than outlet pipe of evaporator
Notes: Overload condition should not be continuous.
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature(℃)
Condensening Temperature（℃）
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
P1
P2
P3
P4
P5
P6
P7
Graph 1a Graph 1b
P1 P2 P3 P4 P5 P1 P2 P3 P4 P5 P6 P7
Condensing
temperature 65℃25℃25℃35℃65℃80℃25℃10℃10℃52℃70℃80℃
Evaporation
Temperature 25℃25℃-30℃-30℃-5℃25℃25℃10℃-25℃-25℃-15℃5℃

DC INVERTER COMPRESSOR CRITERIA
PAGE：7/32
5 Pressure difference between suction and discharge
In all allowable rotational speed range, the difference of pressure should be more than
0. 39MPa{4kgf/cm2}. But if there is no problem of noise when assembled in air conditioner,
it can also below this value.
6 Discharge pipe temperature
Discharge pipe temperature is measured at a distance 300mm from the surface of compressor
and should be less than 110℃. The tip of the thermocouple is fixed by soldering when
measuring discharge pipe temperature .Furthermore, soldering point is covered with urethane
foam to prevent the effect of wind.
7 Air leakage test pressure
The pressure should be less than 4.32MPa{42kgf/cm2G}.
8 Oil back and oil level
The oil should be returned continuously to the compressor and the structure of the refrigerating
system should not make oil stay in the system. The oil level in compressor should be satisfied
with chart 2.If not keep the oil level, the shortage will occur, and influence the reliability
of the compressor.(please check the oil level in the compressor with the sight glass which supplied
form SHEC.
9 Dust of compressor hermetic terminals
Compressor hermetic terminals should be mounted with specified cover in right way to prevent
dust entering, and should be used in direction which dust is hard to enter in.
10 Lead wire of compressor hermetic terminals
Measuring the temperature of hermetic terminals , lead wire should be resist to the temperature
and be clamped so as not in touch with the surface of compressor and pipe.

DC INVERTER COMPRESSOR CRITERIA
PAGE：8/32
11 Start-stop frequency
The frequency should be less than 6 times per hour. Operating time from start to stop should
be more than 3 minutes. Stopping time should be more than 3minutes. But oil level should be
met to item 8. Suction and discharge pressure should balance completely before
restarting.
12 Rate of rotational speed change
The rate of compressor rotational speed (acceleration) should be less than 133min-1/s, But if
The variable range is below 120min-1, rate can also be less than 600min-1 when rotational
Speed is reduced to avoid temporary over- current. The change of compressor rotational
speed is referred to chart 3.
13 Air and moisture in refrigerating system
The degree of vacuum in refrigerating system should be less than 20Pa (150×10－3mmHg) at
room temperature just before charging refrigerant. The quantity of water should be less than
0.2ml.
14 Impurities in refrigerating system
(1) The weight of residue on the inside surface of the heat exchanger and tube should be less
than 0.08g/m2. But metallic dust should not be permitted in the system. This value means the
weight of foreign residue collected by filer paper after washing inside surface of
the heat exchanger tubes with R-11.
(2) Prevent the impurities from entering into the enclosed unit system used R410A. When the impurities
entered into the enclosed system, it will damage the moving mechanism parts and result
in the capillary depositing.
(3) Eliminate all system contaminants such as trichlorethylene, alkalies, soaps, oil, acids &
washing fluid used at machining heat exchanger and tubes.

DC INVERTER COMPRESSOR CRITERIA
PAGE：9/32
15 Compressor vacuum operation
Compressor should never be operated while under vacuum. Otherwise, internal arcing
can cause damaging parts.
16 The compressor should be operated for more than 20 seconds within 15 minutes after charging
refrigerant into the system so proper lubrication results.
17 Liquid refrigerant return limitations
(1) Liquid refrigerant level in s-tank should be lower
than the top of s-pipe in s-tank.(see chart at right)
(2) There should not exist noise of the liquid refrigerant compression, current and vibrancy
increase. System can append the assistant stank or reduce the amount of refrigerant
to prevent from liquid refrigerant compression. Refrigerant system forbid liquid
refrigerant from flowing back compressor in any case. In normal condition the overheat
gas refrigerant should flow back compressor.
18 Purge parts with dry nitrogen or dry air to remove remains in parts (dust,
detergent, etc.) before assembly of system. Time fur purging: over one second
for pipe; over three seconds for heat exchanger. Purging pressure: 0.9±0.1MpaG.
Dew point of dry air: Below -20°C
Dry nitrogen should be charged in compressor before assembly of system. Welding should be finished
within one minute after charge of nitrogen. Dry nitrogen needs to be charged again and weld if over
one minute. Always purge the compressor with dry nitrogen during assembly of system.
The motor winding temperature should be less than 149℃
and hermetic terminal body temperature should be less than 177℃ in process of
manufacturing.

DC INVERTER COMPRESSOR CRITERIA
PAGE：10/32
19 Apply for vehicle
The compressor should not be used on moving equipment such as automobiles, trains,
ships, etc.
20 Installation
The rotational axis of compressor should be kept vertical during operation. But in actual
application the axis incline must be within 5°at all directions during operation
21 Pipe vibration
The displacement of the pipes, which connect from the compressor to other parts of the refrigerate-
or systems, should be less than 0.8mm(1/32”)when the compressor is operating at allowable
rotational speed range and voltage range of rated ±10%.
Displacement in excess of 0.8mm(1/32”) will require changing tube length and/or routing.
22 Connecting tube desigh
In designing and routing tubing that connect from the comprssor to the other parts of the air
conditioner, following should be considered.
Moving tubes to the moving parts; minimum clearance 12.7mm(1/2”)
Moving tubes to non-moving parts; minimum clearance 9.5mm((3/8”)
Moving tubes never touch to lead wire.

DC INVERTER COMPRESSOR CRITERIA
PAGE：11/32
23 Miscellany
(1) The compressor should be carried carefully to avoid drop, drag ,impact and should not apply
partial force on projection parts such as pipe, hermetic terminals, foot during carrying and
processing.
(2) The compressor should not be operated to form a vacuum and to absorb air. The compressor only can
run in one direction which according to lead routing wiring diagram. Never reversion otherwise the
compressor will be in trouble.
（3）The compressor should not be left opened in the atmosphere for more than 5 minutes.
When the air entered into the unit system with refrigerant R410A orR134a
or R1234yf, it will expedite the deterioration of the oil and result in
the capillary depositing and the reducing of insulation resistance.
（4）Electric pulse should not be applied to compressor when it is in vacuum.
（5）The compressor should be kept in the place with low-dust, low-moisture.
（6）The compressor can’t be used in the place with corrosive atmosphere such as hot spring and
chemical warehouse. It should not be the structure often splash water on the surface of the
compressor forcibly.
（7）The trouble of cross valve, electromagnetic valve, defroster, refrigerant controller, fan motor
used in refrigerating system may cause compressor accident .So their reliability should be
ensured completely. Moreover, the way of design, manufacture, application of refrigeration
cycle with less-leak should be adopted.

DC INVERTER COMPRESSOR CRITERIA
PAGE：12/32
(8) The main electric circuit should be equipped with fuse or breaker.
(9) Refrigerant should be charged from the end of condenser of refrigerating systems. Never
Charge refrigerant to the compressor directly.
The refrigerant should always be charged in liquid state. When the refrigerant is charged in
gas state, The percent component will possibly be changed. Do not recharge with the
remaining refrigerant in the system when leakage happened. Because the percent component of
the refrigerant in the unit system had possibly been changed.
(10) Temperatures within systems during stable compressor operation should not be less than
-35℃ to prevent wax precipitation from the oil.
(11) Compressor mounting
Rubber grommets are designed soft to provide the noise isolation and to lessen vibration
Energy transmission. Stud bolt should be designed to provide sufficient clearance for noise and
vibration isolation and to prevent compressor from coming off its mount.
(12) The units of refrigerating system should be connected to earth.
(13) There should be adequate clearance between the OD23-under-surface of Push-Nut and the
upper surface of rubber grommets.
(14) SHEC will not take any responsibility against accident that is caused by the accessories
equipped by yourselves.
(15) The hermetic terminals of compressor should not be inserted slantingly and not be applied
twisting force after inserting so as to avoid reducing of terminal fixed force.

DC INVERTER COMPRESSOR CRITERIA
PAGE：13/32
(16) The pipe and hermetic pens attached to the compressor should not be bent.
(17) The dropped compressor can’t be used anymore.
(18) Compressor can be used when ambient temperature is higher than -10 . Confirm℃the start-up of
compressor if the temperature of compressor surface is below -10 . Heat up compressor to reach
℃
the temperature higher than -10 with heater if the ambient temperature is b℃elow -10 .℃
(19) Set a thermistor on the case cover of compressor to prevent from accident of
leakage of refrigerant. The thermistror can stop the operation of compressor when
compressor in abnormal temperature. The lead wires of thermostat is enveloped with
tube, as same as that of the terminals, to avoid direct contact with the compressor
and pipe.
(20) The compressor should not be splashed with water intentionally. Prevent moisture
from entering into the enclosed unit system. When the moisture entered into the
unit of the refrigerant R410A, the refrigerant oil and the organic compound
material presented in the hermetic motor will possibly decompose on the
affecting of water. It will result in the capillary depositing and the reducing
of insulation resistance.
It is necessary to install a dryer to dehumidify the residual moisture
mixed in the refrigerant in the cycling system. The specially defined
molecular-sieve dryer is advised.

DC INVERTER COMPRESSOR CRITERIA
PAGE：14/32
(21) Use the refrigerant of specified brand. When the refrigerant not specified used, it will
possibly cause trouble of the performance and reliability of the compressor by the impurities
in the refrigerant.
(22) The lead wires should be connected to hermetic terminals without being touched on the surface
of the compressor.
(23) Be careful of avoiding oxide scale while soldering during assembly of refrigerating system.
(for example: flow or fulfill dry nitrogen)
(24) The quantity and kind of contamination (the process materials) in the cycle should
be grasped and managed. Carry on reliability test that input contamination a lot than
anticipated contamination quantity.
(25) To avoid water and impurity into he refrigeration system and make sure no leakage of
refrigerant during the operating course. It’s required to direct the erector and
maintenance man of air-conditioner.
The below substances shall be provided on the final appliance’s accessing parts
to be subject to this maintenance and in the instruction sheet(s) of the final
appliance:expected
WARNING:
When recharge the refrigerant, the processing must be done by the manufacturer
or manufacturer appointed repair shop* or service agent* because correct type of
refrigerant must be ensured.
Provide the contact and address of the repair shops/agent.
Prohibition of mixing the refrigerants
(26) The start-up current and torsion of compressor
Adjust the start-up torsion of the compre
ssor to above 0.55Nm by
inverter.
Confirm and measure the start-up current if change the parts and design.

Check upon Delivery PAGE：15/32
1.Basis for Checking upon Delivery
The Performance test will be carried out in accordance with this “compressor
Specification”.
The Safety Performance in accordance with GB4706.1 Safety of household and
similar electrical appliances General requirements and GB 4706.17 Safety
of household and similar electrical appliances Particular requirements for
motor-compressor.
2.Rule for Checking upon Delivery
If come across any quality problem, please notify the company in written form
within 30 days after the arrival of the cargo, the company shall exchange
exactly the number of the products, otherwise they shall be regarded as being
up to standard.

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