Rheem 70103 Service Instructions Manual page 53

5. 702 & 703 series only: Remove water outlet pipe and timer fascia by following steps 5
– 6 of procedure 4A.
6. 701 Series: Disconnect silicone tubing from outlet tap and remove from tank insulation.
7. Remove element by following steps 5 – 6 of procedure 10.
8. Disconnect wiring connector from level probe and withdraw probe from housing. Note:
level probe is a push fit.
9. Pull silicone tubes away from tank inlet pipe and tank vent outlet pipe. Note: Silicone
tubes are easier to remove if seal has been cracked first by levering with a small flat
bladed screwdriver.
10. Undo two blue tank straps. To remove a strap; pull a strap tag end clear of strap clip
and lever tag end from strap clip using a small flat bladed screwdriver. Pay attention to
how strapping is inserted into clip for later reassembly.
11. Remove tape holding element and boiling thermistor wiring in place at front and right
hand side of tank insulation and lift wiring away from insulation.
12. Remove nut from Earth stud located above tank and remove Earth wires and tank
copper Earth strap from stud.
13. Remove top half of tank insulation. Lift tank including remaining half of tank insulation
clear of BWU.
14. Remove two 10mm nuts retaining water outlet flange to tank and remove water outlet
flange and gasket.
15. Reassemble in reverse order of above. Note: Ensure element and water outlet flanges
are clean. Element and water outlet flange gaskets should be replaced if damaged.
Ensure silicone tubes are not kinked. Rethread blue straps through strap clips and pull
to tighten. Element and thermistor wiring goes under lower blue strap only.
16. Check for leaks.
Base Assembly (Procedure 18)
1. Isolate power and water supplies to BWU.
2. Operate tap lever until water ceases to flow from tap.
3. Remove jacket surround (refer to procedure 1).
4. Remove tap by following procedure 2A steps 1-4 for 702 & 703 series, or procedure
2B steps 4-6 for 701 series.
5. 702 & 703 series: Remove water outlet pipe and timer fascia by following steps 5 – 6
of procedure 4A.
5a.701 series: Disconnect silicone tubing from outlet tap and remove from tank insulation.
6. Disconnect wiring at element and unplug boiling water thermistor at element.
7. Remove level probe and silicone tubing and undo tank straps and remove element
wiring by following steps 7 – 10 of procedure 17.
8. Remove nut from Earth stud located above tank and remove Earth wires and tank
Earth strap from stud.
9. Lift tank including tank insulation clear of BWU.
10. Remove cord set by following steps 3 – 4 of procedure 9.
11. Remove terminal block by following steps 3 – 4 of procedure 15.
TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
This document is stored and maintained electronically by
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
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