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LOOP 8921082G5C Component Maintenance Manual With Illustrated Parts List

Composite water heater
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Composite
Water Heater
PART NUMBER
8921082G5C
ABBREVIATED
Component Maintenance Manual with
Illustrated Parts List
REV. NC, Dated 9/27/23
THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF LOOP AEROSPACE AND ANY DISCLOSURE OF THE
CONTENTS TO OTHERS IS GIVEN IN CONFIDENCE. THIS MATERIAL MUST NOT BE REPRODUCED OR COPIED OR
OTHERWISE DISCLOSED IN WHOLE OR IN PART WITHOUT THE SPECIFIC APPROVAL OF LOOP AEROSPACE, SANTA
CLARITA CA 91350. COPYRIGHT 2023
LoopPMA.com
Loop Aerospace
Santa Clarita, CA 91350

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Summary of Contents for LOOP 8921082G5C

  • Page 1 Illustrated Parts List REV. NC, Dated 9/27/23 THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF LOOP AEROSPACE AND ANY DISCLOSURE OF THE CONTENTS TO OTHERS IS GIVEN IN CONFIDENCE. THIS MATERIAL MUST NOT BE REPRODUCED OR COPIED OR OTHERWISE DISCLOSED IN WHOLE OR IN PART WITHOUT THE SPECIFIC APPROVAL OF LOOP AEROSPACE, SANTA CLARITA CA 91350.
  • Page 2 COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Log of Revisions Rev. Date Pages Affected Approval Bert Brache 9/27/23 Initial Release 38-10-01-ABR Sep 27/23...
  • Page 3 COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C TABLE OF CONTENTS Chapter Subject Section Page Effectivity OVER ECORD OF EVISIONS TABLE OF CONTENTS NTRODUCTION ESCRIPTION AND PERATION ESTING AND AULT SOLATION UTOMATIC EQUIREMENTS ISASSEMBLY (Partial Only) LEANING NSPECTION HECK EPAIR SSEMBLY PECIAL...
  • Page 4 This abbreviated component maintenance manual complies with the intent of specification ATA 100. It is intended to provide the information necessary to perform minor shop maintenance and repair of part number 8921082G5C Water Heater by repair stations, repairmen and or licensed technicians. The 8921082G5C Water Heater is manufactured by:...
  • Page 5 COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C THIS PAGE INTENTIONALLY LEFT BLANK 38-10-01-ABR Sep 27/23...

  • Page 6: Description And Operation

    PERATION A. Description. The water heater, P/N 8921082G5C, shown in Figure 1 is typically located in the aircraft lavatory to provide warm water as part of the potable water system. The water heater tank is made of composite material and shrouded by an aluminum housing to thermally insulate the pressurized tank and provide high heat retention, while the exterior of the water heater remains cool to the touch.
  • Page 7 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C B. Operation. The water heater is powered by a 115VAC power source. This power is utilized by the circuit board depicted in Figure 2 in order to control the water heater. Current is directed through the overheat thermostat to the On/Off toggle switch and then flows out through the circuit board.

  • Page 8: Leading Particulars

    ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C C. Leading Particulars. Leading particulars for the water heater are listed in Table 1. NOTE: The factory presets the outlet water temperature to the MED setting on the circuit board, which is 110º + 5º F and within the specified range presented in Table 1. This preset temperature can be easily changed by the customer to a higher or lower setting as desired.

  • Page 9: Testing And Fault Isolation

    ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C 2. T ESTING AULT SOLATION General Testing shall be conducted at ambient temperature and ground level air pressure with electrical components thoroughly dry. Examination Prior to performing any testing, confirm that the water heater is in good mechanical condition.
  • Page 10 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C D. Pressure Test Procedure. NOTE: Refer to Figure 7 for location of item numbers (10) through (160) tested in this procedure. The pressure test procedure is recommended after assembling Phase 1 water- tight components. The procedure is the same for either the (10) or (-15) tank assembly. If...
  • Page 11 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C PARTIAL TANK ASSEMBLY EXAMPLE FIGURE 4 (NOT SHOWN) PRESSURE TEST SET-UP EXAMPLE FIGURE 5 38-10-01-ABR Sep 27/23 Page 6...
  • Page 12 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C E. Operational/Leak Check Test Procedure. WARNING: MAKE CERTAIN VOLTAGE IS NOT APPLIED TO TEST SET-UP UNTIL INSTRUCTED AND THAT NO ONE IS TOUCHING ANY PORTION OF THE CONNECTION POINTS OR ELECTRICAL WIRES. FAILURE TO COMPLY WITH THIS WARNING MAY RESULT IN SEVERE ELECTRICAL SHOCK.
  • Page 13 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C WARNING: EXTRA HOT WATER WILL BE PRODUCED DURING THIS PROCEDURE. TO AVOID BURNS, DO NOT ALLOW HOT WATER FROM THE WATER OUTLET TO COME IN CONTACT WITH CLOTHING OR SKIN. This procedure checks the overheat switch thermostat (230) to verify the unit OPENS to disconnect electrical power to the circuit and confirms the proper safety function of the device.
  • Page 14 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C WATER HEATER TEST SET-UP FIGURE 6 38-10-01-ABR Sep 27/23 Page 9...
  • Page 15 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Fault Isolation Table 3 provides fault isolation procedures for the Water Heater. The left column lists the TROUBLE, the center column provides the PROBABLE CAUSE, and the right column provides the CORRECTION. NOTE: Refer to Figure 7 for location of item numbers used in fault isolation.
  • Page 16 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Temperature Adjustment WARNING: TO AVOID DAMAGE TO CIRCUIT BOARD OR ELECTRICAL SHOCK, DO NOT ADJUST TEMPERATURE WITH POWER ON THE WATER HEATER. NOTE: Refer to Figure 7 for location of item numbers used in thermostat adjustment.
  • Page 17 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Do not remove clear locking plug (380) unless replacement is required. To replace plug, squeeze the sides to unlock the plug and then push the plug out. To remove the green ground wire (190), it is better to leave the wire attached to the top...
  • Page 18 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C (16) ❖ ⧫ ◆⧫⚫⧫ ⧫⧫◼  ⧫ ◼⬧    ❖◼ ⬧⬧  ◼ ⬧⬧   ⧫ ◆⬧◼ ⚫ ⚫⧫  ◆⚫⚫◼ ⧫  ◆⧫⚫⧫ ⧫⧫◼ ⬧⧫⧫ ◆⧫  ⧫ ⧫⬧ ...
  • Page 19 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C 6. I NSPECTION HECK A. General A preliminary cleaning before initial inspection will facilitate location of obvious defects. Inspection Procedure ◼⬧⧫ ⧫ ⬧◼⬧ ⧫⧫◆   ❖⧫ ⬧⧫ ⧫⬧⧫⧫ ◼ ⧫⚫ ⬧⧫ ◼ ⧫⧫ ⧫⧫◼ ◆⧫⚫⧫ ⧫⧫◼...
  • Page 20 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C 8. A SSEMBLY General The procedures contain assembly instructions for a complete buildup of the water heater assembly. However, complete buildup of the water heater may not be required due to the extent of disassembly. Omit those steps not required. Special fits, clearances, and adjustments are stated in the applicable step.
  • Page 21 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C ⚫ ⧫ ⧫ ⚫ ◼  ⧫ ⧫⧫ ❖   ◼⧫ ⧫ ⧫◼ ◆⬧◼  ◼ ◆ ⬧   ◼⧫⬧ ⧫  ⬧◼ ⧫ ⧫ ⧫⚫ ⚫ ⧫ ◼ ⚫ ⧫ ◆⧫⚫...
  • Page 22 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C (11) ⚫ ⬧⬧⚫ ◆⬧ ◼ ◼  ⚫⧫ ⬧◆  ⚫ ⚫◆◼⧫ ⧫ ◼  ◼ ⚫ ⧫ ◼ ⬧ ⧫ ◼ ❖ ◼ ⧫ ⧫⧫  ⧫ ⧫ ◼  ⧫ ⚫ ⧫ ◼ ⧫⧫ ⧫⧫◼...
  • Page 23 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C (20) Install circuit board (270) by connecting the wires from the water sensor (20) first, then placing the circuit board (270) on the hex standoffs (260) of the top plate (240), making sure the black and white wires of the feed-thru assembly (50) are then connected to circuit board (270).
  • Page 24 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C PECIAL OOLS IXTURES QUIPMENT General Table 7 lists the special tools, fixtures, equipment, and consumables required to maintain the water heater. Standard shop tools, fixtures, and equipment are not listed. Equivalent substitutes may be used for listed items.

  • Page 25: Illustrated Parts List

    ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C 10. I LLUSTRATED ARTS A. Introduction General. The Illustrated Parts List is intended for use in provisioning and requisitioning replacement parts and assemblies and in identification of new and reclaimed parts. How to Use the Illustrated Parts List Figure and Item Number Column The first number identifies the figure number.
  • Page 26 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C •    ⧫ ⧫ ⬧⬧ ⚫ •    ⧫ ⧫ ⬧⬧ ⚫ Units Per Assy The number appearing in this column are the total quantity of the listed part required in its immediate assembly or location.
  • Page 27 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Detailed Parts List The Detailed Parts List consists of illustrations and columnar parts breakdowns of the water heater assembly, subassemblies, and detail parts that may be disassembled, repaired or replaced, and reassembled. Each part or subassembly is indented to show relationship back to the next higher assembly.
  • Page 28 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C Water Heater Top View Water Heater Bottom View Figure 7 (Sheet 2 of 4) 38-10-01-ABR Sep 27/23 Page 23...
  • Page 29 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C UNITS AIRLINE FIG. ITEM PART NUMBER STOCK NO. NOMENCLATURE EFFECT. ASSY PHASE 1 – WATER-TIGHT TANK ASSEMBLY Not Line Replaceable TANK ASSEMBLY Not Line Replaceable TANK ASSEMBLY, ALTERNATE P/N Not Line Replaceable WATER SENSOR...
  • Page 30 ABBREVIATED COMPONENT MAINTENANCE MANUAL MODEL NUMBER: 8921082G5C UNITS AIRLINE FIG. ITEM PART NUMBER STOCK NO. NOMENCLATURE EFFECT. ASSY PHASE 2 – OPERATIONAL/LEAK CHECK TANK ASSEMBLY 892108-06281 HEATER ELEMENT MS21043-08 NUT, SELF LOCKING 892108-181-3G GREEN GROUND WIRE 892108-181-3W WHITE NEUTRAL WIRE...