Table of Contents
Advertisement
Maintenance
M
AINTENANCE
This section explains maintenance procedures and lists replacement parts for the HRE-819 List 1 and 2.
P
E
ROTECTOR
XTRACTION
All protected HRE-819 enclosures are equipped with protector sockets located in each plug-in position. Use either
200A, 208A or 3P-68 protectors (gas tubes).
Remove the protectors using the 829A tool as follows:
1
For List 2 units, shut off the air supply by turning the air bypass valve counter-clockwise one-quarter turn
away from the housing.
2
Release the pressure inside the case by removing the valve core (pin) from the air stem. The core is removed
in the same manner as the valve core in an automobile tire tube.
9
3
Using a
/
-inch hand held nut drive wrench, loosen the captive bolts on the cover and remove the two covers.
16
Remove doublers, if present.
4
Set the adaptor on the 829A tool to T1.
5
Orient the 829A tool so the locking bar faces the outboard side of the housing, then insert the 829A tool into
plug-in position, and push until the resistance of the protector sliding into the protector supports is felt.
6
Remove the 829A tool from housing without depressing the locking bar.
7
To remove protectors from the 829A tool, depress locking bar and pull retractor backwards.
P
I
ROTECTOR
NSTALLATION
The 829A extractor tool is available from third-party vendors.
Install the 200A (or 208A in 819A2 or 819B2) protectors within each doubler and maintenance unit plug-in slot
using the 829A tool as follows:
1
For List 2 units, shut off the air supply by turning the air bypass valve counter-clockwise one-quarter turn
away from the housing.
2
Release the pressure inside the case by removing the valve core (pin) from the air stem. The core is removed
in the same manner as the valve core in an automobile tire tube.
9
3
Using a
/
-inch hand held nut drive wrench, loosen the captive bolts and remove the two covers. Remove
16
the doublers, if present.
4
Set the adapter on the 829A tool to T1.
5
Place four protectors in the protector supports.
18
July 9, 1998
150-819-100-03
HRE-819 List 1 and 2
Advertisement
Table of Contents
