Gentec 2100 Series Quick start guide

1
2100/210, 220 Series Semi-Automatic Switchover System
Operational Manual
Genstar Technologies Co. Inc.
4525 Edison Ave.
Chino, CA 91710
Tel: [phone]
Fax: [phone]

2
Introduction
GENTEC R2100 Series Semi-Automatic Switchover System is used for adjusting,
controlling, small flow, compressed gas manifold systems without interrupting the
system during switchover. The switchover occurs automatically, once the primary bank
(in use) gas supply runs low, the reserve bank becomes the primary bank. The arrow on
the handle bar on the right end bank regulator indicates the designated primary bank,
which the operator may change. The outlet pressure may be calibrated to meet customer
needs. See Figure 1 for a diagram of the switchover system.
Figure 1

3
Assembly
1. Measure the position at which the switchover system is to be assembled, ensure that
it is at a location convenient for both the operator and maintenance personnel. The
switchover system shall be placed in a well ventilated facility, and must be away from
flammable materials and open fire. There are four 8mm assembly holes on the mount,
which are intended to be used with 6mm expansion screws or bolts to mount the
switchover system against the wall or assembly rack.
C
I
N
R E
A
S
E
GENTEC
E
R
C
D
E
A
S
E
GENTEC
Li ne P ress ure Gaug e 6
lin e Re gula tor 3
left ban k Pr essu re G auge 4
L eft bank Reg ulat or 1
Plu g
Left bank Inlet Right Bank Inlet
Outlet
R ight Ban k Pr essu re G auge 5
R ight Ban k Re gula tor 2
Ha ndle Bar
Figure 2

4
Principles
See Figure 2 for the components of the switchover system.
Left Bank Regulator 1 outlet pressure is preset and non-adjustable, at a pressure of
Pi. Right Bank Regulator 2 pressure is adjusted only within a certain range by the 180
degrees movement of the handle bar. When the arrow is pointing left, the outlet pressure
of the Right Bank Regulator 2 is P1, and when the arrow is pointing right, the outlet
pressure is P2, where pressure P2 > P1. Left Bank Regulator pressure Pi is equal to (P1+
P2)/2.。While the arrow is pointing left, P1 is < Pi, therefore the gas is supplied through
the left bank. While the arrow is pointing right, P2 > Pi, therefore the gas is supplied
through the right bank.
Line Regulator 3 outlet pressure can be adjusted by turning the knob on the
regulator. Left Bank Pressure Gauge 4 and Right Bank Pressure Gauge 5 display the left
and right bank inlet pressure, respectively. Line Pressure Gauge 6 displays the system
outlet pressure.
Operation
1. Primary bank and reserve bank setup:
While both bank cylinders are full, the operator can designate either side to become
the primary bank. For example, when the arrow is pointing to the left, the left bank is
designated as the primary bank and the right bank as the reserve bank. If the operator
chooses to turn the arrow to the right first, then the right bank would be designated as

5
the primary bank and left bank becomes the reserve bank.
2. Replacing cylinders and operation:
When the primary bank gas supply is almost depleted, the switchover will occur
automatically, meaning the reserve bank is now in use. The operator may verify
which bank is depleted by reading the inlet pressure gauge. When the switchover
occurs, the operator must replace the cylinders on the depleted bank immediately.
Note: Before replacing the cylinders, remember to turn the arrow
180 degrees to designate the other bank as the primary bank.
3. Adjusting the system outlet pressure:
The outlet pressure is displayed by the pressure gauge 6 on the line regulator. The
outlet pressure of line regulator 3 is adjusted by turning the adjusting screw
clockwise and vice versa.
Maintenance
 Daily maintenance should be done by trained personnel only:
1. Record the outlet/piping pressure.
2. Verify that the regulator, header bar, pigtail connections do not have
leakage.
3. Check the regulator for creep; must maintain regulator immediately if
creep is present.