Varian VHS-6 Instruction Manual download pdf (Page 14)

1-1

SECTION I

INSTALLATION

Before unpacking and installing the VHS-6 Diffusion Pump, the user should thoroughly familiarize

himself with this instruction manual and the diffusion pump specifications (see Table 1). He should

also examine all other technical material supplied in order to gain a better understanding of the oper-

ating principles, limitations, correct application, and the hazards involved with the use of this equip-

ment.

1-1 SPECIFICATIONS

Table 1 lists the specifications for all standard type 0184 models of the pump.

Table 1. Pump Specifications

Power Rating 2200 watts

Optimum Operating Range 1 x 10

-3

to <5 x 10

-9

(Torr)

.133 Pa to <.000000665 Pa

Maximum Pumping Speed

(liters/sec – air) 2400 with std cold cap; 1600 with extended cold cap

(liters/sec – helium) 3000 with std cold cap; 2000 with extended cold cap

Maximum Throughput 3.5

(Torr liters/sec at 0.01 Torr (13.3 Pa))

Maximum Forepressure No Load: 0.65 Torr (86.45 Pa)

Full Load: 0.55 Torr (73.15 Pa)

Backstreaming Rate at Pump Inlet <5 x 10

-4

mg/cm

/minute (with std cold cap)

Power Required (approximately) 120, 240, 208, 50/60 Hz, single phase

Warmup Time 9 minutes

Cooldown Time (using quick cool coil) 10 minutes

Fluid Charge 500 cc

Cooling Water Requirements

(max. inlet temperature) 60/80 degrees F

(max. outlet temperature at foreline) 120 degrees F

(general flow rate) 0.25 gpm

Pressure drop across coils 15 psi

Backing Pump Size Recommended 17 cfm for maximum throughput

Jet Assembly 4-stage, self-aligning, stainless steel

Foreline Baffle Stacked half moon

Cold Cap Nickel-plated Copper

Water Connections

⁄8 FPT

Thermal Switches Manual reset at 300°F

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 29 30

Comments to this Manuals

No comments

Varian VHS-6 Instruction Manual Page 14

Comments to this Manuals

Related products and manuals for Water pumps Varian VHS-6