Variable displacement vane (with mechanical pressure compensator) PVS-Type Key Features: Rotation: Right (viewed from shaft end) Mounting flanges: 4-hole flange (UNI ISO 319/2) onnections: GS SP (UNI ISO 228/1) e S Mechanical displacement limiter "Q" on request ll s are already set up as standard to be coupled to each other and with other types of Series/Name Rated isplacement (cm 3 /r [in 3 /r]) Maximum Flow apacity at 145 rpm (L/min) [US gpm] Maximum Pressure (bar) [psi] 2-PVS-1-2 2 [1.22] 29 [7.66] 1 [145] 2-PVS-1-25 25 [1.53] 36 [9.51] 1 [145] 2-PVS-2-31 31 [1.89] 45 [11.89] 1 [145] 2-PVS-2-4 4 [2.44] 58 [15.32] 1 [145] 2-PVS-2-5 5 [3.5] 73 [19.28] 1 [145] 2-PVS-3-63 63 [3.84] 91 [24.4] 8 [11] 2-PVS-3-8 8 [4.88] 116 [3.64] 8 [11] 2-PVS-3-1 1 [6.1] 145 [38.3] 8 [11] -1.5.52.1.3.16.
ONTNTS ONTNTS GNRL SRIPTION...-3 HRTRISTIS... -4 ORRING O... -5 THNIL T... -6 OMIN PUMPS... -7 HRTRISTI URVS...-9 IMNSIONS... -12 SSORIS... -17 INSTRUTIONS FOR INSTLLTION N US...-19 WRNING ll erarma s have been carefully checked during manufacture and subjected to stringent testing cycles before shipment. To achieve optimum performance, avoid problems and maintain the warranty, the installation instructions enclosed with each must be strictly observed. NOTS efore selection or use of any erarma product, it is important that the purchaser analyses all aspects of its application and reviews the information in the current erarma Technical-Sales catalogues. ue to the many different operating conditions and applications for erarma products, the purchaser, through their own analysis and testing, is solely responsible for making the final selection of the products and assuring that all performance and safety requirements are met. erarma S.r.l. accepts no responsibility for any editing mistakes in this catalogue. erarma S.r.l. reserves the right to modify these data without prior notice. -2
GNRL SRIPTION erarma PVS variable displacement vane s come in three nominal sizes: SIZS 1-2-3, each of which is available in three different displacements. The PVS low pressure s (1 bar) [145 psi] are equipped with a MHNIL pressure regulating device. Pump components include: a body 1, a drive rotor 2 which houses the vanes 3, vanes that transport the fluid into the inlet and outlet chambers; a stator 4 (mobile circular ring) for varying eccentricity and consequently displacement; side distribution plates with XIL HYROSTTI OMPNSTION 5 which delimit the inlet and outlet chambers; a guide block balancing adjustment screw 6 (absolutely must not be tampered with by the user); a displacement adjustment piston 7, a maximum volume adjustment screw 8 (available on request); a pressure control device 9; and a pressure regulator 1. 1 9 1 2 6 7 8 OUT IN 3 4 5 GNRL SRIPTION Hydraulic Symbol -3
HRTRISTIS HRTRISTIS SILNT RUNNING from to 72 d(). HIGH FFIINY. LONG WORKING LIF thanks to quality materials and state-of-the-art manufacturing technology: hydrodynamic lubrication of bearings and hydrostatic balancing of distribution plates. ONOMY N SIMPLIFITION OF HYRULI SYSTM. The s can be supplied with various proportional devices for flow, pressure and power control. ISO standard MOUNTING FLNGS. GS (SP), S standard PORT ONNTIONS. MOULR SIGN: all erarma s feature modular design for maximum flexibility and adaptability. The s comprise a body, common to each size, on which the various types of compensator devices (mechanical and hydraulic for pressure and volume control) can be mounted. The can therefore be converted from PVS to PSP and vice versa without any special modification, using the same standard body. PSP PVS IN -4
ORRING O 1 2 3 4 5 6 7 8 9 SRIS NM SIZ ISPLMNT FLNG PRSSUR STTING ROTTION SLS OPTIONS.G. 2 PVS 1 2 F H R M Q-KL 1 PUMP SRIS = 2 2 PUMP NM = PVS ORRING O 3 PUMP SIZ = 1, 2, 3 4 ISPLMNT M 3 /R = 2-25 (SIZ 1) 31-4 - 5 (SIZ 2) 63-8 - 1 (SIZ 3) 5 FLNG N PORT ONNTIONS = F (UNI ISO 319/2 - GS SP UNI ISO 228/1 thread) 6 PRSSUR STTING ONTROL L H 15-5 bar (218-725 psi) 3-8 bar (435-11 psi) for SIZ 3 3-1 bar (435-145 psi) for SIZ 1-2 7 ROTTION = R (Right hand - clockwise viewed from shaft end) 8 SLS = M (NR) (FPM-Viton) 9 OPTIONS = KL (Key lock compensator) Q (Flow regulation screw) -5
THNIL T THNIL T NOMINL SIZ SIZ 1 SIZ 2 SIZ 3 Geometric displacement according to UNI-ISO 3662 (cm 3 /r) [in 3 /r] ctual displacement (cm 3 /r) [in 3 /r] 2-25 [1.22-1.526] 22.1-26.9 [1.349-1.642] 31.5-4-5 [1.922-2.441-3.51] 34.5-42.8-53.1 [2.15-2.612-3.24] 63-8-1 [3.844-4.882-6.12] 69-86.2-15.5 [4.211-5.2-6.438] Maximum working 1 [145] 1 [145] 8 [11] Pressure setting range Permitted maximum drain port Inlet pressure (absolute-bar) [absolute-psi] L - 15 / 5 bar [218/ 725 psi] H - 3 / 1 bar [435 / 145 psi] L - 15 / 5 bar [218 / 725 psi] H - 3 / 1 bar [435 / 145 psi] 1 [14.5].8-1.5 [11.6-21.8] Speed range (r/min) 8-18 Rotation direction (viewed from shaft end) Loads on drive shaft Maximum torque on primary shaft (Nm) [lb in] Hydraulic fluid Right (clockwise) R NO RIL OR XIL LOS LLOW L - 15 / 5 bar [218 / 725 psi] H - 3 / 8 bar [435 / 11 psi] 197 [1744] 4 [354] 74 [655] HM hydraulic oil according to ISO 6743/4; HLP hydraulic oil according to IN 51524/2 organic ester HF-U according to ISO 6743/4 (Quintolubric 888) for other fluids contact erarma Technical-Sales Service Viscosity range (cst, mm2/s) 22 - Starting viscosity under full flow conditions (cst, mm²/s) Viscosity index according to ISO 299 4 max 1 min Inlet fluid temperature range ( ) [ F] -1 / +5 [14 / 122] Maximum acceptable fluid contamination level Recommended fluid contamination level for a longer working life 2/18/15 according to ISO 4/99, LSS 9 according to NS 1638 18/16/13 according to ISO 4/99, LSS 7 according to NS 1638 Weight (kg) [lb] 12 [26.7] 32 [71.1] 44 [97.8] For different operating conditions, please contact erarma Technical Service -6
OMIN PUMPS RRM s are already set-up for coupling to one another or to other types of (see table of possible combinations). The standard rotor shaft is set up for coupling (see section view, detail "", on page 3). fter removal of cover "", the can be fitted with the different units already set up for coupling. With this solution RRM intends to avoid s with non-standard special applications, in order to simplify interchangeability and combination. For solutions different to the ones described, please contact erarma Technical Service. 2 1) ombined Pumps 2) Non return valve - recommended installation (supplied on request) 1 OMIN PUMPS The ordering code should be specified according to the coupling sequence PRIMRY PUMP O + OUPLING UNIT O + SONRY PUMP O -7
OMIN PUMPS ombined s should be mounted in decreasing order of absorbed power. epending on the conditions of use of each, combination should be established after first checking that torque values (Nm) [lb in] never exceed the limits specified in the table below. Primary Secondary oupling unit code 2 PVS-PSP 1 2 PVS-PSP 2-3 Gear 1P 311 Gear 1M 3111 Gear 2 3112 1-PLP-PHV-5-F 312 1-PLP-PHV-5-FGR2 3112 2 PVS-PSP 1 F 311 S "" 311 Gear 1P 322 Gear 1M 3221 Gear 2 3222 Gear 3 3223 1-PLP-PHV-5-F 324 1-PLP-PHV-5-FGR2 3222 2 PVS-PSP 1 F 321 2 PVS-PSP 2 322 S "" 312 S "" 313 2 PVS-PSP 3 2 PVS-PSP 3 323 Maximum torque for secondary 55 Nm [487 lb in] 11 Nm [974 lb in] 18 Nm [1593 lb in] Warning: the sum of the torques of the combined s must not exceed the maximum permissible torque on the primary (see page 6). Secondary with S or 2-bolt mounts should conform to the dimensions below. Ø Ø G F Primary Secondary flange 2 PVS 1 S J744 2 PVS 2-3 S J744 S J744 Ø Ø min. max. F G 82.5 [3.248"] 82.5 [3.248"] 11.6 [4."] 19.5 [.75"] 19.5 [.75"] 22.2 [.874"] 21.1 [.831"] 21.1 [.831"] 25.1 [.988"] 25.5 [1."] 4.8 [.189"] 32 [1.2"] 4.8 32 [.189"] [1.2"] 6,375 [.251"] 41 4.8 [1.614"] [.189"] 59 [2.323"] 59 [2.323"] 71 [2.795"] 7 [.276"] 7 [.276"] 9.5 [.374"] 16.4 [4.189"] 16.4 [4.189"] 1 [5.748"] -8
HRTRISTI URVS indicative values related to 145 r/min., HM hydraulic oil according to ISO 6743/4, ISO VG 32 according to ISO 3448, temperature 5 [122 F] flow (l/min) [USgpm] 4 [1.57] 3 [7.93] 2 [5.28] 1 [2.64] drainage (l/min) [USgpm] 2.5 [.66] 2 [.53] 1.5 [.4] 1 [.26].5 [.13] 2 PVS 1 2-25 values established under zero flow setting 2-25 volumetric efficiency - zero flow setting curve 2 [29] 4 8 1 [58] [87] [11] [145] 2 [29] 2 7 [9.39] 6 [8.5] 5 [6.71] 4 [5.36] 3 [4.2] 2 [2.] 1 [1.34] 4 [58] [87] absorbed power (kw) [hp] 8 [11] 1 [145] Maximum noise level measured on erarma test bench with sound-level meter placed 1 metre [39.37"] from the, with flexible coupling. 7 d() 66 64 62 58 2-25 2 [29] 4 [58] 8 [87] [11] 1 [145] HRTRISTI URVS volumetric efficiency - zero flow setting curve flow (l/min) [USgpm] 4 [1.57] 3 [7.93] 2 [5.28] 1 [2.64] 2 [29] 4 [58] 8 [87] [11] Power consumption with maximum flow Power consumption with zero flow setting 25 8 [1.73] 7 [9.39] 6 [8.5] 5 [6.71] 4 [5.36] 3 [4.2] 2 [2.] 1 [1.34] 1 [145] absorbed power (kw) [hp] 25 [3626] 2 [291] 15 [2176] 1 [145] 5 [725] Response time and pressure peak time ms 2-25 5 ms Pressure peaks are due to the test system. Pressure peak exceeding 3% of the maximum operating pressure must be eliminated by adopting the appropriate measures. -9
HRTRISTI URVS indicative values related to 145 r/min., HM hydraulic oil according to ISO 6743/4, ISO VG 32 according to ISO 3448, temperature 5 [122 F]. flow (l/min) [USgpm] flow (l/min) [USgpm] 8 [21.13] 7 18.49] [15.85] 5 [13.21] 4 [1.57] 3 [7.93] 2 [5.28] 1 [2.64] 8 [21.13] 7 18.49] [15.85] 5 [13.21] 4 [1.57] 3 [7.93] 2 [5.28] 1 [2.64] volumetric efficiency - zero flow setting curve 2 4 [29] [58] [87] 8 [11] 1 [145] 2 PVS 2 31-4-5 31 12 [16.9] 1 [13.41] 8 [1.73] 6 [8.5] 4 [5.36] 2 [2.] volumetric efficiency - zero flow setting curve 2 4 [29] [58] [87] 8 1 [11] [145] 4 14 [18.77] 12 [16.9] 1 [13.41] 8 [1.73] 6 [8.5] 4 [5.36] 2 [2.] absorbed power (kw) [hp] absorbed power (kw) [hp] drainage (l/min) [USgpm] 5 [1.32] 4 [1.6] 3 [.79] 2 [.53] 1 [.26] values established with zero flow setting 31-4-5 2 [29] 4 [58] [87] 8 [11] 1 [145] Maximum noise level measured on erarma test bench with sound-level meter placed 1 metre [39.37"] from the, with flexible coupling 72 d() 7 66 64 62 31-4-5 2 [29] 4 [58] [87] 8 [11] 1 [145] volumetric efficiency - zero flow setting curve flow (l/min) [USgpm] 8 [21.13] 7 18.49] [15.85] 5 [13.21] 4 [1.57] 3 [7.93] 2 [5.28] 1 [2.64] 2 [29] 4 [58] [87] Power consumption with maximum flow 8 [11] Power consumption with zero flow setting 1 [145] 5 16 [21.] 14 [18.77] 12 [16.9] 1 [13.41] 8 [1.73] 6 [8.5] 4 [5.36] 2 [2.] absorbed power kw 25 [3626] 2 [291] 15 [2176] 1 [145] 5 [725] Response time and pressure peak time ms 31-4-5 5 ms Pressure peaks are due to the test system. Pressure peak exceeding 3% of the maximum operating pressure must be eliminated by adopting the appropriate measures. -1
indicative values related to 145 r/min., HM hydraulic oil according to ISO 6743/4, ISO VG 32 according to ISO 3448, temperature 5 [122 F] flow (l/min) [USgpm] flow (l/min) [USgpm] 1 [42.27] 14 [36.98] 12 [31.7] 1 [26.42] 8 [21.13] [15.85] 4 [1.57] 2 [5.28] volumetric efficiency - zero flow setting curve 1 [42.27] 14 [36.98] 12 [31.7] 1 [26.42] 8 [21.13] [15.85] 4 [1.57] 2 [5.28] 2 4 8 [29] [58] [87] [11] 2 PVS 3 63-8-1 63 18 [24.14] 15 [2.12] 12 [16.9] 9 [12.7] 6 [8.5] 3 [4.2] volumetric efficiency - zero flow setting curve 2 [29] 4 [58] [87] 8 21 [28.16] 18 [24.14] 15 [2.12] 12 [16.9] 9 [12.7] 6 [8.5] 3 [4.2] 8 [11] absorbed power (kw) [hp] absorbed power (kw) [hp] drainage (l/min) [USgpm] 5 [1.32] 4 [1.6] 3 [.79] 2 [.53] 1 [.26] values established under zero flow setting 63-8-1 2 [29] 4 [58] [87] 8 [11] Maximum noise level measured on erarma test bench with sound-level meter placed 1 metre [39.37"] from the, with flexible coupling d() d() 74 72 7 66 64 62 63-8-1 2 4 [29] [58] [87] 8 [11] HRTRISTI URVS flow (l/min) [USgpm] 1 [42.27] 14 [36.98] 12 [31.7] 1 [26.42] 8 [21.13] [15.85] 4 [1.57] 2 [5.28] volumetric efficiency - zero flow setting curve 2 [29] 4 [58] [87] Power consumption with maximum flow Power consumption with zero flow setting 1 24 [32.18] 21 [28.16] 18 [24.14] 15 [2.12] 12 [16.9] 9 [12.7] 6 [8.5] 3 [4.2] 8 [11] absorbed power (kw) [hp] 2 [3771] 2 [291] 14 [231] 8 [11] 2 [29] Response time and pressure peak time ms 63-8-1 5 ms Pressure peaks are due to the test system. Pressure peaks exceeding 3% of the maximum operating pressure must be eliminated by adopting the appropriate measures. -11
IMNSIONS IMNSIONS Inlet port 1 [.394] 1" Gas (SP) Ø1 [3.937] Ø25 [.984] 7 [2.756] 9 [.354] 82 [3.228] 26 [1.24] 159 [6.2] 25 [8.71] *- Supplied on request (see page 18) rain port 3/8" Gas (SP) 213 [8.386] 2 PVS 1 2-25 (F) 131 [5.157] 82 [3.228] 3 [1.181] max. 28 [1.12] 28 [1.12] max. 66 [2.598] 66 [2.598] 8 [3.15] 8 [.315] 12 [4.724] Pressure adjustment screw 12 [4.724] Ø11 [.433] Ø125 [4.921] PVS 26 [1.24] Outlet port 3/4" Gas (SP) Flow regulation screw* 2 PVS 2 31-4-5 (F) Ø125 [4.921] Ø32 [1.2] Inlet port Ø [2.362] 35.7 [1.] 1 [.394] 7 [2.756] 9 [.354] 4 [1.575] 91 [3.583] 219 [8.622] 279 [1.984] *- Supplied on request (see page 18) rain port 115 [4.528] 285 [11.22] 175 [6.89] 4 [1.575] max. 11 [4.331] 45 [1.772] max. 95 [3.74] 95 [3.74] 63 [2.48] 1 [.394] Ø14 [.551] 35 [1.378] 15 [5.96] 114 [4.488] 15 [5.96] Ø1 [6.299] Pressure adjustment screw 26.2 [1.31] Outlet port Ø 3 [1.181] Flow regulation screw* 52.4 [2.63] Flange Ø Ø F (ISO) 38 [1,496] Note: dimensions inside [ ] are in inches S (3) 1"1/2 M12 x 45 [.472x1.772] 25 [,984] S (3) 1" M1 x 35 [.394x1.378] 1/2" Gas (SP) -12
Inlet port Ø [2.677] 43 [1.693] 1 [.394] Ø1 [6.299] Ø4 [1.575] 77.8 [3.63] 9 [.354] 15 [4.134] 245 [9.6] 313 [12.323] *- Supplied on request (see page 18) rain port 125 [4.921] 2 PVS 3 63-8-1 (F) 35 [12.8] 185 [7.283] 45 [1.772] max. 12 [4.724] 4 [1.575] max. 15 [4.134] 43 [1.693] 123 [4.843] 12 [.472] 15 [4.134] 63 [2.48] 185 [7.283] 185 [7.283] Ø18 [.79] Ø2 [7.874] Pressure adjustment screw ir bleed Outlet port Ø 3.2 [1.189] 35 [1.378] Flow regulation screw* 58.7 [2.311] IMNSIONS Flange Ø Ø F (ISO) 51 [2,8] Note: dimensions inside [ ] are in inches S (3) 2" M12 x 45 [.472x1.772] 32 [1,2] S (3) 1"1/4 M1 x 4 [.394x1.575] 1/2" Gas (SP) -13
Primary 2 PVS PSP 1 F IMNSIONS Secondary 1P gear 1M gear 2 gear 132 [5.197] 132 [5.197] 132 [5.197] Primary 2 PVS 1 F 64 [2.52] 64 [2.52] 72 [2.835] 196 [7.717] please 196 [7.717] 24 [8.31] consult gear catalogue Secondary 1-PLP-F 1-PLP-FGR2 25 [8.71] 24 [8.31] 17 [4.213] 17 [4.213] 21 [7.913] 21 [7.913] 26 [1.24] 26 [1.24] Primary 2 PVS PSP 1 F Secondary 2 PVS PSP 1 26 [1.24] 27 [8.15] 27 [8.15] 159 [6.2] Note: dimensions inside [ ] are in inches -14
Primary 2 PVS PSP 2 F Secondary 1P gear 1M gear 2 gear 3 gear 173 [6.811] 173 [6.811] 173 [6.811] 173 [6.811] 9 [3.543] 9 [3.543] 9 [3.543] 9 [3.543] Primary 2 PVS PSP 2 F [2.362] [2.362] [2.362] [2.362] 263 [1.354] 263 [1.354] 263 [1.354] 263 [1.354] please consult gear catalogue IMNSIONS F Secondary 1-PLP 5 F 1-PLP 5 FGR2 F 258 [1.157] 263 [1.354] 17 [4.213] 17 [4.213] [2.362] [2.362] 24 [9.449] 245 [9.6] 4 [1.575] 4 [1.575] 3 [1.181] 3 [1.181] Primary 2 PVS PSP 2 F Secondary F F 2 PVS PSP 1 F 4 [1.575] 2 [9.5] 3 [1.181] 159 [6.2] [2.362] 2 [1.236] Primary 2 PVS PSP 2 F Secondary F G G F 2 PVS PSP 2 F 4 [1.575] 275 [1.827] 3 [1.181] 275 [1.827] 22 [8.661] 275 [1.827] [2.362] Note: dimensions inside [ ] are in inches -15
Primary 2 PVS PSP 3 F IMNSIONS Secondary 1P gear 1M gear 2 gear 3 gear 198 [7.795] 198 [7.795] 198 [7.795] 198 [7.795] 9 [3.543] 9 [3.543] 9 [3.543] 9 [3.543] Primary 2 PVS PSP 3 F [2.677] [2.677] [2.677] [2.677] 288 [11.339] 288 [11.339] 288 [11.339] 288 [11.339] please consult gear catalogue Secondary F F 1 PLP 5 F 1 PLP 5 FGR2 283 [11.142] 288 [11.339] 17 [4.213] 17 [4.213] [2.677] [2.677] 259 [1.197] 264 [1.394] 35 [1.378] 35 [1.378] Primary 2 PVS PSP 3 F Secondary F F 2 PVS PSP 1 F 265 [1.433] 35 [1.378] [2.677] 285 [11.22] 159 [6.2] Primary 2 PVS PSP 3 F Secondary F F 2 PVS PSP 2 F 2 PVS PSP 3 F 295 [11.614] 315 [12.42] 35 [1.378] 35 [1.378] [2.677] [2.677] 3 [11.811] 315 [12.42] 22 [8.661] 245 [9.6] Note: dimensions inside [ ] are in inches For the dimensions of the other solutions described on page 8, please contact erarma Technical Service. -16
SSORIS KY-LOK STTING PRSSUR VI 2 PVS 1...-KL [2.362] 77 [3.31] 191 [7.52] SSORIS 2 PVS 2...-KL 2 PVS 3...-KL 235 [9.252] 245 [9.6] [2.362] [2.362] 77 [3.31] 77 [3.31] Note: dimensions inside [ ] are in inches -17
SSORIS Pump type Indicative data that can change from to 7 x 7 [.276" x.276"] 2 PVS 1-2 FLOW RGULTION SRW 2 PVS 1-25 2 PVS 2-31 2 PVS 2-4 2 PVS 2-5 2 PVS 3-63 If the is supplied with flow regulation screw "Q" set to less than 5% of the nominal flow, the can only start on condition that the system and are completely filled with fluid. 2 PVS 3-8 2 PVS 3-1 MX flow at 145 r/min (l/min) [USgpm] MIN flow at 145 r/min (l/min) {USgpm} Reduced flow by screw turn (l/min) [USgpm] 33 {8.72} 11 {2.91} 14 {3.7} 39 {1.3} 17 {4.49} 14 {3.7} 5 {13.21} 2.3 {.61} 23.8 {6.29} 62 {16.38} 14.3 {3.78} 23.8 {6.29} 78 {2.61} 3.3 {8.} 23.8 {6.29} 1 {26.42} 14 {3.7} 34.5 {9.11} 125 {33.2} 39 {1.3} 34.5 {9.11} 152 {4.15} 66 {17.44} 34.5 {9.11} FLNGS S J518 (3 SRIS) SUPPLI WITH SRWS N O-RING G H Ø F J ØK Pump type ORRING O Nominal size Ø F G H J ØK Screws O-Ring 2 PVS PSP 2 55412 1" 1" Gas (SP) 25 52.4 7 26.2 52 38 18 19 11 [.984] [2.63] [2.756] [1.31] [2.47] [1.496] [.79] [.748] [.433] 38 7 93 35.7 78 44 25 24 13.5 55416 1" 1/2 1"½ Gas (SP) [1.496] [2.756] [3.661] [1.] [3.71] [1.732] [.984] [.945] [.531] 2 PVS PSP 3 55414 1" 1/4 1"¼ Gas (SP) 32 58.7 79 3.2 41 21 22 11.5 [1.2] [2.311] [3.11] [1.189] [2.677] [1.614] [.827] [.866] [.453] 51 77.8 12 42.9 9 45 25 3 13.5 55418 2" 2" Gas (SP) [2.8] [3.63] [4.16] [1.9] [3.543] [1.772] [.984] [1.181] [.531] M1 [.394] M12 [.472] M1 [.394] M12 [.472] OR 4131 NR OR 4187 NR OR 415 NR OR 4225 NR Note: dimensions inside [ ] are in inches -18
INSTRUTIONS FOR INSTLLTION N US 1) Size 1 PVS s can be mounted in any position. Sizes 2 and 3 PVS s must be mounted with the shaft along a horizontal axis and with the compensator device facing upward (see figure). When the is installed above the tank oil level, pay attention to the inlet pressure (see page 6). The minimum section of the inlet pipe must be equal to the section of the thread of the inlet port. The inlet pipes should be as short as possible, with a small number of bends and without internal section changes. 2) ll return and drain pipes must be positioned so that the oil cannot be sucked back directly by the (see figure). The oil tank must be suitably sized in order to exchange the thermal power generated by the various system components and to provide a low recycle rate. To ensure the maximum working life, the inlet oil temperature must never be above 5 (122 F). In systems where the runs for a long time under zero flow setting conditions, the installation of a heat exchanger in the drain line is recommended. The pressure on the drain port must never exceed the specified value (page 6). The drain pipe must always be independent from the other return lines, connected directly to the tank, and extended sufficiently inside the tank so as to be below the minimum oil level to avoid generating foam. Moreover, the drain pipe must be free of restrictions and as far as possible from the inlet pipe. 3) Motor- coupling must be made with a self-aligning flexible coupling with convex teeth and a polyamide cam. When assembling, maximum attention must be given to the distance between the two half-couplings which must strictly fall within the values specified in the diagram below (detail ""). Other types of motor- couplings are not permitted. No induced RIL or XIL LOS are allowed on the shaft. 4) uring initial installation, the must be run under maximum flow conditions (P connected to T), with the oil flowing directly into the tank, in order to induce air bleeding. This phase must run for several minutes. Pump priming (delivery of oil to the outlet) must occur within a few seconds, otherwise the must be turned off and the operation repeated. Subsequent start-ups under zero flow setting conditions are admissible only with pressure not exceeding 3 bar (435 psi), and with the system and completely filled with oil. uring the initial and subsequent starting operations, the difference between the oil temperature and the ambient temperature (body temperature) must not exceed 2 ( F). 1 [4] min. RIN OUT 2 [8] min. TIL 4-7 [.157 -.276] 45.5 5 [2] min. INSTRUTIONS FOR INSTLLTION N US IN 3 [12] min. 15 [6] min. Note: dimensions inside [ ] are in inches For further information, please consult the leaflet "Installation and start-up instructions for variable displacement vane combined s". -19
-2 PVS