Guidelines When Installing A Sight Glass - Daikin LRMEQ3AY1 Installer And User Reference Manual

6 Installation
a b
e d c
a Service port
b Stop valve cover
c Hexagon hole
d Shaft
e Seal
To open the stop valve
1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop
valve counterclockwise.
3 When the stop valve cannot be turned any further, stop turning.
Result: The valve is now open.
2
3
1
4
To close the stop valve
1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop
valve clockwise.
3 When the stop valve cannot be turned any further, stop turning.
Result: The valve is now closed.
Closing direction:
To handle the stop valve cover
▪ The stop valve cover is sealed where indicated by the arrow. Take
care not to damage it.
▪ After handling the stop valve, make sure to tighten the stop valve
cover securely. For the tightening torque, refer to the table below.
▪ Check for refrigerant leaks after tightening the stop valve cover.
Installer and user reference guide
16
NOTICE
Thread-locking fluid. Before reattaching the stop valve
cover, apply thread-locking fluid to the screw thread (NOT
to the cover or sealing part). Otherwise, condensation
water might enter and freeze. Possible consequence:
Deformation, refrigerant
malfunction.
a b b c
a Cover (do NOT apply thread-locking fluid)
b Sealing part (do NOT apply thread-locking fluid)
c Screw thread with thread-locking fluid
To handle the service port
▪ Always use a charge hose equipped with a valve depressor pin,
since the service port is a Schrader type valve.
▪ After handling the service port, make sure to tighten the service
port cover securely. For the tightening torque, refer to the table
below.
▪ Check for refrigerant leaks after tightening the service port cover.
NOTICE
Thread-locking fluid. Before reattaching the service port
cover, apply thread-locking fluid to the screw thread (NOT
to the cover or sealing part) . Otherwise, condensation
water might enter and freeze. Possible consequence:
Deformation, refrigerant
malfunction.
a
b
c
a Cover (do NOT apply thread-locking fluid)
b Sealing part (do NOT apply thread-locking fluid)
c Screw thread with thread-locking fluid
Tightening torques
Stop valve Tightening torque N•m (turn clockwise to close)
size (mm)
Valve body Hexagonal
wrench
Ø9.5 5.4~6.6 4 mm
Ø15.9 13.5~16.5 6 mm
6.4.8

Guidelines when installing a sight glass

Install a sight glass on the liquid piping:
Diameter 9.5 mm
Where/how Install the sight glass before the dryer, as near
to the outdoor unit as possible. Install
horizontally.
a Sight glass
b Dryer
leakage and compressor
leakage and compressor
Shaft
Cap (valve Service
lid) port
13.5~16.5 11.5~13.9
22.5~27.5
a b
LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P442131-1 – 2016.03