PS Engineering PM3000 Installation Manual - Manual (Page 8)

Page 8 200-193-0005 Rev. 8, Nov. 2013
4.2 Factory Service
The PM3000 is covered by a one-year limited war-
ranty. See warranty information.
Call PS Engineering, Inc. at (865) 988-9800 before
you return the unit. This will allow the service techni-
cian to provide any other suggestions for identifying
the problem and recommend possible solutions.
Information is also available by visiting www.ps-
engineering.com/support.shtml
Units that arrive for repair without a method of pay-
ment will be returned via UPS COD.
After discussing the problem with the technician and
you obtain a Return Authorization Number, ship prod-
uct to:
NOTE: PS engineering will not be responsible for any units sent
by US Mail.
PS Engineering, Inc.
Service Department
9800 Martel Road
Lenoir City, TN 37772
(865) 988-9800 FAX (865) 988-6619
Appendix A — PTT Modifications
When received from the manufacturer, an aftermarket
PTT switch opens the mic audio path to the "ring"
connection of the PTT mic plug. When the PTT is be-
tween the intercom and the headset, the intercom func-
tion will not work until the PTT switch is depressed. A
simple modification can be performed to allow proper
intercom operation. NOTE: This mod does not alter
normal operation. Modified portable PTT switches are
available from PS Engineering. Call 1-800-ICS-AERO
to order.
Appendix B- Instructions for FAA
Form 337
One method of airworthiness approval is through
an FAA Form 337, Major Repair and Alteration
(Airframe, Powerplant, Propeller, or Appliance)
In the case of the PM3000, you may use the fol-
lowing text as a guide.
Installed x-place intercom, PS Engineering
PM3000, part number 1193(_) in ( location ) at
station
. Installed per AC43.13-2B, In-
stalled per PS Engineering Installation Operators
Manual p/n 200-193-xxxx, revision x, dated ( ).
This unit is FAA-Approved under TSO C50c for
audio amplifiers, and meets environmental tests
outlined in RTCA DO-160C as appropriate or this
aircraft.
Interface to existing aircraft radios in accordance
with manufacturer’s installation manual and in
compliance with practices listed in AC43.13-2B,
Chapter 2. All wires are Mil-Spec 22759 or
27500. No connection to the aircraft dimmer bus
is required. Power is supplied to the unit through a
1A circuit breaker (type and part number), and
total electrical load does not exceed % of the
electrical system capacity with the PM3000
added.
Aircraft equipment list, weight and balance
amended. Compass compensation checked. A
copy of the operation instructions, contained in PS
Engineering document 202-193-xxxx, revision (x),
(date) , is placed in the aircraft records. All work
accomplished listed on Work Order
.
Appendix C, Instructions for continu-
ing airworthiness
The PM3000 is considered an “on-condition” mainte-
nance item. It is checked prior to each flight during
normal operation. There are no additional considera-
tions for continuing airworthiness other than the prac-
tices detailed in AC 43.13-1B, Chapter 11. This in-
cludes inspecting the unit to be sure it is securely fas-
tened in its location, and that the wiring harness is not
chafed or pinched, and remains secure. All panel jacks
should be checked at each periodic inspection to en-
sure that they are tight and not in contact with other
items behind the instrument panel.
Optional 2 ¼” Mounting Plate without crew –575-030-0007
Optional 2 ¼” Mounting Plate with crew 575-030-0005 (shown)