Parr Instrument Valve Controller - Manual (Page 4)

Valve Controllers
P a r r I n s t r u m e n t C o m p a n y 4
Cleaning & Maintenance
Periodic cleaning may be performed on the exterior
surfaces of the controller with a lightly dampened
cloth containing mild soap solution. All power
should be disconnected and the power cord should
be unplugged when cleaning the 4877 Valve Control-
ler.
There are no user serviceable parts inside the prod-
uct other than what is specifi cally called out and
discussed in this manual. Advanced troubleshooting
instructions beyond the scope of this manual can
be obtained by calling Parr Instrument Company in
order to determine which part(s) may be replaced or
serviced.
Provisions for Lifting and Carrying
Before moving the instrument, disconnect all con-
nections from the rear of the apparatus. Lift the
instrument by grabbing underneath each corner.
General Specifi cations
Electrical Ratings
115 VAC, 3.0 Amps, 50/60 Hz
or
230 VAC, 3.0 Amps, 50/60 Hz
Before connecting a controller to an electrical outlet,
the user must be certain that the electrical outlet has
an earth ground connection and that the line, load
and other characteristics of the installation do not
exceed the following limits:
Voltage: Fluctuations in the line voltage should not
exceed 10% of the rated nominal voltage shown on
the data plate.
Frequency: Controllers can be operated from either
a 50 or 60 Hertz power supply without affecting their
operation or calibration.
Current: The total current drawn should not exceed
the rating shown on the data plate on the controller
by more than 10 percent.
Environmental Conditions
This instrument is intended to be used indoors.
Operating: 15 ºC to 40 ºC; maximum relative humid-
ity of 80% non-condensing. Installation Category II
(over voltage) in accordance with IEC 664.
Pollution degree 2 in accordance with IEC 664.
Altitude Limit: 2,000 meters.
Storage: -25 ºC and 65 ºC; 10% to 85% relative hu-
midity.
Caution!
Do not use in hazardous atmospheres.