56-101-01501_01502 Revision D
Page | 12
B.
Items not included
(1) Adapter Cables
– Contact Barfield with your aircraft requirements
(2) Special Accessories Package (P/N 101-01516)
4. PREPARATION
Consult the Aircraft Maintenance Manual (AMM) and / or Fuel Quantity Indicating System
manufacturer's instructions for procedures and specifications.
Note:
It is recommended that the complete DFQ40K Operation procedures be read
before
attempting to use the DFQ40K on the aircraft system.
A.
Battery Installation and Replacement
The user must ensure that only batteries of the proper type (Eveready Size “C” 1.5V
Alkaline No. E93 or equivalent) are used and that the satisfactory battery condition is
maintained. Whenever the BATTERY legend shown in the Display (refer to Figure 8)
indicates depleted cells on the LCD, the batteries
MUST
be replaced.
To remove old batteries and to install new ones:
(1) Before battery installation, test each one individually to assure maximum battery life.
(2) Remove caps from the two battery holders in the BATTERY COMPARTMENT located
on the rear of the Test Set.
(3) If there are old batteries inside this compartment, remove them. Install (3) C-cells into
each holder, observing polarity (+ end faces out), as shown in Figure 13.
(4) Replace the caps on the two battery holders.
CAUTION:
Battery orientation is all 6 batteries with + end facing outward.
Figure 13
Correct Battery Orientation
B.
Standard Accessory Lead Package
(supplied with the Unit)
The Standard Accessory Lead Package (P/N 101-01511) stored in the lid pouch, provides
the cables and adapters required to perform a wide variety of Fuel Quantity System tests:
(1) One set of three TEE adapters, red, white, and black: P/N 31-008.
(2) Two adapter assemblies, polarized BNC to BNC: P/N 112-00009.
(3) One lead, Ground alligator clip to stackable banana plug, black: P/N 101-01007.