Seametrics PX12 - Manual

PX12 Percentag e Timer
Instructions
PUB 19130-1000
Page 1 of 2
General Information
The PX12 is an on-time/off-time timer which cycles
continuously. It is designed primarily for water treat-
ment applications, and is used most commonly with
metering pumps and other fluid handling devices.
Housed in a splashproof non-metallic enclosure, it can
be mounted on a wall or inside a panel. Time setting is
digital, by DIP switches under the clear front cover. On-
time and off-time are set independently, giving a mini-
mum cycle of two seconds and a maximum of over
four hours.
Specifications
Power 115 VAC
On Time Range 1 second - 127 minutes
Off Time Range 1 second - 127 minutes
Minimum Increment
1-127 seconds one second
127 seconds + one minute
Enclosure Polycarbonate, glass filled,
5x5"
Relays 5 Amp res., 1/4 HP ind.
Installation
Mounting. To gain access to the mounting screw holes,
remove the front clear cover. Mounting screw holes
are at the four corners, under the cover screws. Mark
centers of these holes, then drill. Finally, insert the
screws through the corner holes and tighten.
Terminal Access. It is not normally necessary to ac-
cess terminals, since all connections can be made ex-
ternally. However, conduit connection requires the front
plate to be removed to reach the terminals. See con-
nections diagram.
Connect the load. On standard units, a short pigtail
cord with receptacle is provided for connection of a 115
VAC load. The pigtail can be removed and the unit can
be hard-wired if necessary. Remove the front panel
and consult the Connections diagram for the proper
terminals.
Connect Powe r. A power cord is provided for plug-
ging in to any grounded outlet. See Connections dia-
gram if conduit connection is necessary.
Outpu t Ind icator
Outpu t test
but ton
Tim e on
sett ing switches
Tim e off
sett ing switches
Powe r switch
and ind icator
Cove r screws
and bo x moun ting
scre w holes
Powe r inpu t cord
(6’ leng th) Tim er outp ut
cor d (7" leng th)
Int ern al 5 Amp
replaceab le fuse
behi nd panel
OFF ON
TEST
Output
PX12
PERCENTAGE TIMER
32
16
8
4
2
1
Tim e on equal s the
su m of the
switche s turne d "ON".
Tim e of f equal s the
su m of the
switche s turne d "ON".
64
32
16
8
4
2
1
64
Thi s switch
"OFF " tim e in seconds
"ON " tim e in minutes
Thi s switch
"OFF " tim e in seconds
"ON " tim e in minutes
OFF ON
T
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Inc. Kent, WA
Features
DIS
CON
TIN
UED