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Related Manuals for Witt HRP Series
Summary of Contents for Witt HRP Series
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Page 2: Table Of Contents
Content 1. INTRODUCTION ..........................1 1.1 INTENDED USE ..........................1 1.2 SAFETY REQUIREMENTS ......................1 1.3 SAFETY ADVICE ...........................1 1.4 DISCLAIMER ..........................2 2. TERMS OF WARRANTY ........................3 3. TECHNICAL INFORMATION ......................4 3.1 DESCRIPTION OF TYPES ......................4 3.2 SCOPE OF DELIVERY ........................4 3.3 ORDER INFORMATION ........................4 3.4 CODES / CERTIFICATES / APPROVALS..................4 4. -
Page 3: Introduction
1.1 INTENDED USE 9. SERVICE AND MAINTENANCE ...................... 55 9.1 REMOVING A PUMP ........................55 The WITT hermetic refrigerant pump type is designed to deliver exclusively refrigerant liquid at its boiling point. 9.2 SHIPPING OF THE PUMP ......................55 The pump is labelled with model and design limitation for pressure and temperature. -
Page 4: Disclaimer
Retighten all screw connections after maintenance and repair work! may be carried out to the refrigerant pump without the explicit written approval by TH. WITT If you have to disassemble any safety devices for maintenance and repair make sure that upon KÄLTEMASCHINENFABRIK GMBH. -
Page 5: Technical Information
(values at operating point – see selection tool) The following certifications are available and can be downloaded from our website www.th- witt.com: declaration of incorporation of a partly completed machinery according to EG machinery di- rective, conformity declaration according to EU- low voltage directive. -
Page 6: With Nh
FURTHER 60 HZ MOTORS 60 Hz 3 x 460 V 60 Hz 3 x 380 V DESCRIPTION Unit 3232 5040 5050 8050 10080 DESCRIPTION Unit 3232 5040 5050 8050 10080 Speed [min 3500 3500 3500 3500 3500 Speed [min 3500 3500 3500 3500... -
Page 7: Materials
4.3 MATERIALS Pump housing: EN-GJS-400-18-LT Stator: steel / copper Rotor: steel/aluminium Bearings: PTFE The following table gives an overview of available standard and special pump types. Futher Shaft: C 35+C pump types are under development. Motor can: 1.4301 Impellers: GX22CrNi17M Nenndruck und verfügbare Pumpen / Design pressure and available pumps Main bolts: Design... -
Page 8: Hrp 5040
5040 5050 8050 10080 60,3 60,3 88,9 114,3 48,3 60,3 60,3 88,9 5040 5050 8050 10080 h1 115 h2 105 Fig. 2 HRP 5040/5050/8050/10080... -
Page 9: Sectional Views
4.6 SECTIONAL VIEWS Fig. 3 a HRP 3232 Fig. 3b HRP5040/HRP 5050/HRP 8050/HRP 10080... -
Page 10: Ltr
Parts list HRP 3232 and HRP 5040 backup fuse for PTC resistor 2591.000101 2591.000101 sensor wire HRP 3232 HRP 5040 sensor wire insulation sensor connecting cover sensor inlet nipple part Dimension Code - No. Weight Dimension Code - No. Weight counterflange suction side DN32 1720... - Page 11 HRP replacement assemblies and spare part sets Parts list HRP5050 HRP 5050 HRP 5050 CO HRP3232 HRP5040 Part Article No. Weight [g] Part Article No. Weight [g] part dimension code - no. Weight [g] dimension code - no. Weight [g] bearing casing with parts: 2162.A00092 2162.A00090...
- Page 12 connecting box, compl. 98/64/38 2162.000075 98/64/38 2162.000075 backup fuse for PTC resistor 2591.000101 2591.000101 07, 29, 39, 41.1-CO , 45, 51, 77-79, since 01/12 sensor wire A7- CO 93, E30, E42.1- CO sensor wire insulation A7- CO2 sensor connecting cover A7- CO2 stator with parts A8- CO...
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Page 13: X (U X I Wirk X Cos J)
Parts list HRP8050 sensor wire A7- CO sensor wire insulation A7- CO HRP 8050 HRP8050 CO sensor connecting cover A7- CO sensor inlet nipple A7- CO DN80 1625 DN80 1625 part dimension code - no. Weight [g] dimension code - no. Weight [g] counterflange suction side counterflange discharge side... - Page 14 complete HRP-replacement assemblies and spare part sets ..Counterflange incl. mount. mat. 2162.000146 2531 2162.000146 2531 4 x 24a, 4 x 24b, 2 x 31, 83, HRP 8050 HRP 8050 CO ..Counterflange incl. mount. mat. Teil Artikelnummer Gewicht [g] Teil Artikelnummer Gewicht [g] 2162.000145 1600...
- Page 15 Parts list HRP8050-2 complete HRP-replacement assemblies and spare part sets HRP 8050-2 HRP 8050-2 part dimension code - no. Weight [g] suction casing DN 80 2162.000178 9040 suction intermediate piece Ø196 2162.000028 2276 Part Article No. Weight [g] guide vane-interm. piece 1 Ø196 2162.000033 3764...
- Page 16 Parts list HRP10080 complete HRP-replacement assemblies and spare part sets HRP 10080 HRP10080 CO part dimension code - no. Weight [g] dimension code - no. Weight [g] HRP 10080 HRP 10080 CO suction casing DN 100 2162.002011 11420 DN 100 2162.002011 11420 suction intermediate piece...
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Page 17: Description Of Operation
4.7 DESCRIPTION OF OPERATION 4.8 PERFORMANCE CHARACTERISTIC TABLE From the surge drum refrigerant liquid flows into the suction chamber of the pump. In the suction 50 Hz, 3 x 400V connection a conical screen is placed. A special design of the suction chamber reduces the inlet Druckdifferenz Δp [bar] Volumenstrom V[m³/h] friction. -
Page 18: Applications
5.1 GENERAL In industrial refrigeration systems pumps are used to deliver refrigerant to the evaporators. WITT hermetic refrigerant pumps are designed especially for this purpose. The principle of a pump re-circulation system is shown in fig. 4. Fig. 4 principle of pump re-circulation system... -
Page 19: Determination Of The Delivery Head
RE-CIRCULATION RATES AND PUMP CAPACITY HRP8050 requires, when operated with synthetic refrigerants (HFC, HFO), e.g. R134a, R404A, R410, R507, a larger motor. Therefore these re-frigerants must be specified when ordering! Recirculation factor Recirculation flow in m³/hr per 100 kW* Refrigerant A horizontal separator is recommended: this gives greater surface area for the settlement of Air Cooler 1,2 –... -
Page 20: Use Of Frequency Converters
The vortext breaker shall consist of crossed plates with a baffle plate on top to avoid any vor- texing. Vortex breakers are available from TH. WITT. Above the baffle plate of the vortex breaker there should be at least 15mm refrigerant level (in systems a minimum coverage of 50mm is required). -
Page 21: Downleg Design
A standard short oil drainage dome is not suitable for connecting a pump suction down leg. 6.3 DOWNLEG DESIGN Do not connect two or more pumps in operation by a single common pump suction line liquid The pump shall be connected vertically with the separator. To prevent interference between header. -
Page 22: Pump Discharge Line
If the valve is installed in the gas part of the vent line, immediately in front of the connection Required diameter of the downleg to the pumps point to the CO vessel a smaller valve is sufficient, e.g. DN10 (0.4”). The stop valve must be locked in an open position and marked “do not close during normal operation”. - Page 23 SAFEGUARDING AGAINST TOO HIGH PRESSURE 60 Hz, 3 x 460V Operating refrigerant pumps against too high pressure (e.g. against partially or fully Set point Δp Evap. Temp. R404A/R507A R134a closed throttled condition) is not allowed and will damage the refrigerant pump! °C °F [bar]...
- Page 24 0,96 4419.020113 0,28 m/s. HRP 8050 27,3 0,96 4419.020111 0,38 See WITT information sheet W 4652-0.01 HRP10080 27,3 1,28 4419.020112 12,5 0,47 * mm values for DIN pipes / ** inch values reference schedule 80 pipe *** Article orifice consisting of: flanges, orifice, gasket, bolts and nuts...
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Page 25: Electrical Information
When a closed circuit with the pump housing is observed, the bearings are worn and the pump The required PTC motor control relay, e.g. INT 69 V, can be supplied by WITT. must be sent to the supplier for repair. - Page 26 Steuerung mit Strömungsw ächter / control with flow indicator Informationszeichnung presentation of information HRP 3232, HRP 5050, HRP 10080 Datum : 01.12.2000 Diese Zeichnung zeigt die, v on der Fa. Witt empfohlene, und/and seit/since 01.12.2000 Zeichn.Nr.:3-16128.0342.001.007s Steuerung der Kältemittelpumpen Typ HRP HRP 5040 und 8050...
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Page 27: Transport And Storage
7. TRANSPORT AND STORAGE 70°C All connections are protected with yellow plastic caps to prevent any dirt or moisture contami- nates the pump. Storage shall be dry and protected from any dirt or debris. Please lift the pumps according to the following photos. rechtes Drehfeld Thermistor rechtes Drehfeld... -
Page 28: Installation And Application
8. INSTALLATION AND APPLICATION All of the following specified work must be carried out by knowledgeable and trained personnel experi-enced in installation and service of refrigeration systems! 8.1 PREPARING THE PUMP FOR INSTALLATION Before the pump is installed the following functions should be carried out: ·... -
Page 29: Prior To Commissioning
Table 4 8.3 PRIOR TO COMMISSIONING · the refrigeration system must be pressure tested, vacuum tested and be fully charged with refrigerant. · the suction- and discharge valves must be fully open the valves of the pressure differential control, if fitted, must be fully open ·... -
Page 30: Pump Standstill (Stand-By)
8.6 PUMP STANDSTILL (STAND-BY) 9. SERVICE AND MAINTENANCE During periods of pump standstill, only one valve may be closed, preferably the suction 9.1 REMOVING A PUMP valve. When the suction and discharge valves are closed at the same time, trapping cold liquid in the pump, the pressure will increase rapidly, as the liquid warms up, to an Follow all national and local safety requirements when removing the pump. -
Page 31: Reparing A Pump
Only knowledgeable, trained refrigeration mechanics should install, operate, or service these pumps. Oil can be drained through a WITT EA 10 GÜ/GB stop valve which can be installed in place of the lower 1/4"-srew plug in the suction or discharge chamber. -
Page 32: Trouble Shooting
TROUBLE SHOOTING Motor protec- - Pump is blocked (see above) tion/fuses trip pump symptom Possible causes - noise comes from outside - foreign material in pump - operation against a too high pressure – check the setting of your overflow valve (or whether there is sufficient flow to the evaporators) - in CO2 systems check whether the minimum flow line is fully open pump makes... - Page 33 ANNEX Steuerung 1: Pumpenstart nach Stillstand Control 1: pump start after stand-still Steuerung 4: Betrieb mit 2 oder mehr Pumpen Pumpe ein Control 4: operation with 2 or more pumps Pump on Differenzdrucküberwachung 2 (oder mehr) Pumpen im Betrieb (gleiche Frequenz) Differential pressure 2 (or more) pumps in operation (same frequency) 20 Sec...
- Page 34 Frequenzumrichter Frequency converters Steuerung 5: Betriebssituation, gilt für alle Pumpen Control 5: operating condition, for all pumps Mindeststand im Behälter / minimum level in the vessel Einstellungen Settings: ØMindeststand (Abschaltung): 50 mm oberhalb Strudelbrecher Pumpe läuft ØLow level (switch off): 50 mm above vortex breaker Pump in operation •...
- Page 36 Lukasstraße 32, 52070 Aachen, Germany Tel. +49 241 18208-0 sales@th-witt.com...
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